Your Step-by-Step Subaru Crosstrek Power Blocks Install

Not all performance parts are created equal. Some rely on software tricks, while others fundamentally change how your engine works. Our Billet Power Blocks fall into the second category. By physically lengthening the intake runners, they allow your engine to breathe more deeply, which is the key to producing more torque where you need it most. It’s a simple concept rooted in solid engineering. This guide will not only walk you through the complete Subaru Crosstrek power blocks install process but also explain the science behind why this modification is one of the most effective ways to get more power from your vehicle without compromising reliability.

Key Takeaways

• Feel an Immediate Performance Gain: Installing the Billet Power Blocks adds a tangible 15 horsepower and 22 lb-ft of torque. This translates directly to a quicker throttle response for city driving and more confident power for climbing hills.
• Plan for a Straightforward DIY Installation: This is a one-hour project perfect for most home mechanics. Be prepared for minor adjustments, like finessing bolt alignment, to ensure a smooth and successful installation.
• Make a Smart, Foundational Upgrade: By improving how your engine breathes, these blocks offer one of the best performance-per-dollar values. They work effectively on their own and create a solid foundation that complements other modifications like intakes or exhausts.

What Do Crawford's Billet Power Blocks Actually Do?

So, what’s the magic behind our Billet Power Blocks? It’s actually straightforward engineering designed for a noticeable impact. In simple terms, these blocks act as a spacer, lifting your Subaru’s intake manifold by 1-13/16 inches. This simple lift creates a longer intake runner, which changes the airflow dynamics into your engine. The result is that your engine can pull in more air, more efficiently. More air means better combustion, and better combustion is the key to unlocking more power from your engine.

This modification is one of the most effective ways to get a direct performance improvement without diving into a full engine rebuild. It’s a bolt-on solution that enhances the natural breathing ability of your Subaru’s engine. Whether you’re navigating city streets, merging onto the highway, or tackling a steep trail, this improved airflow translates to a more responsive and capable vehicle. It’s a foundational upgrade that works well on its own or as part of a larger plan for your performance parts build.

The Performance Gains You Can Expect

Let's talk numbers. Installing a set of Crawford Billet Power Blocks can add approximately 15 horsepower and 22 lb-ft of torque to your Crosstrek. While those numbers look great on paper, what really matters is how they feel from the driver's seat. This added torque is especially noticeable at lower RPMs, giving you the grunt you need to pull away from a stop or climb a steep grade without your engine feeling strained. The extra horsepower provides more passing power on the highway, making your daily drive more enjoyable and your off-road adventures more capable. It’s a tangible gain that makes your Crosstrek feel more awake and responsive.

Why Billet Aluminum Construction Matters

We machine our Power Blocks from a solid piece of high-quality 6061 billet aluminum. We choose this material for a few critical reasons. First, it’s incredibly strong and durable, so it can easily handle the heat and vibration of your engine bay for years to come. Second, it’s lightweight, so you’re not adding unnecessary mass to your vehicle. Each block is precisely CNC machined for a perfect fit, ensuring there are no leaks or alignment issues. Finally, we give them an anodized finish, which not only looks great but also adds a tough layer of protection against corrosion. This commitment to quality materials ensures our Subaru Crosstrek upgrades deliver reliable performance.

Breaking Down the Key Features and Specs

Before you grab your tools, it’s important to understand what you’re installing and why it’s such a popular upgrade. The Crawford Billet Power Blocks are more than just a simple add-on; they’re a thoughtfully engineered solution designed to give your Subaru a noticeable and immediate performance improvement. This isn't about replacing a worn-out part—it's about fundamentally enhancing how your engine breathes and performs. Let's look at the specific gains, what models they fit, and exactly what you’ll find when you open the box.

The 15 HP / 22 TQ Advantage

The main reason you’re here is for the performance, and this upgrade delivers. Installing the Crawford Billet Power Blocks adds a solid 15 horsepower and 22 lb-ft of torque to your engine. What does that feel like on the road? It translates to a more responsive throttle, quicker acceleration from a stop, and more pulling power when you’re heading up a steep incline or navigating a trail. By increasing the length of the intake runners, these blocks optimize airflow to give your engine the extra muscle you’ve been looking for, making your daily drive or weekend adventure that much more engaging.

Compatibility: 2018-2024 Crosstrek Models

These Power Blocks are specifically designed to fit 2018–2024 Subaru Crosstrek and 2017-2024 Impreza models. This precision engineering ensures a perfect fit without any need for custom modifications, making the installation straightforward. If you own a Crosstrek within this year range, you can be confident that this kit is a direct bolt-on solution for your vehicle. This upgrade is one of the most effective ways to get more out of your Crosstrek’s engine, whether you’re building a capable overlanding rig or just want to add some spirit to your commute. It’s a foundational part of our broader collection of Subaru Crosstrek upgrades.

What's Included in Your Kit?

We believe a DIY project should be as seamless as possible, which is why we provide a complete kit with everything you need. When you open the box, you’ll find the two billet aluminum spacers, all the necessary longer bolts, special O-ring seals for a perfect fit, an extended EGR tube, and an extended PCV hose. You won’t have to worry about making a last-minute trip to the auto parts store for a missing component. We’ve included every piece required to get the job done right the first time, ensuring a secure, leak-free installation that will deliver reliable performance for years to come.

Gathering Your Tools for the Installation

Before you pop the hood, let's talk about preparation. A smooth installation always starts with having the right tools laid out and ready to go. Taking a few minutes to gather everything you need will save you from making frustrated trips back to the toolbox and ensure the job gets done right the first time. This is a straightforward project, and with the proper setup, you’ll be finished and enjoying the extra power in no time. Let's get your workspace organized so you can focus on the fun part.

Your Essential Tool Checklist

You don’t need a professional mechanic’s entire arsenal for this job, but a few key items are essential. For a standard installation, make sure you have a good socket set with extensions, a torque wrench for proper tightening, and basic hand tools. However, it’s smart to be prepared for minor adjustments. Some installers have noted that the bolt holes on the Power Blocks may need slight clearancing to perfectly match the manifold. For this, having a drill and the right size bit on hand can be a lifesaver. A drill press will make this even easier and more precise if you have access to one.

How Long Will It Take? (And How Hard Is It?)

This is one of the most satisfying Crosstrek upgrades because it delivers noticeable results with minimal downtime. You should plan on the installation taking an hour or less, even if you're taking your time. On a difficulty scale, this project rates about a 3 out of 10, making it a perfect weekend project for a DIY enthusiast with basic experience. The process is mostly plug-and-play, with the main task being the careful removal of the intake manifold to place the Power Blocks. It’s a manageable job that gives you a great sense of accomplishment once you're done.

Your Step-by-Step Installation Guide

Alright, let's get to the fun part: the installation. We’ve designed this process to be as straightforward as possible, so you can get back on the road and feel the difference. Follow these steps, and you’ll have your Billet Power Blocks installed in no time.

Step 1: Prep Your Workspace and Vehicle

Before you touch a single bolt, get your workspace in order. A clean, well-lit area makes any job easier and safer. Once your space is ready, pop the hood and let the engine cool down completely. If your Crosstrek has high mileage—around 100,000 miles—it’s a smart move to grab a new set of Intake Manifold Gaskets to install with your Power Blocks. Old gaskets can become brittle, and replacing them now ensures a perfect, leak-free seal. This prep work is your best defense against having to do the job twice.

Step 2: Remove the Stock Components

With your Crosstrek prepped, it’s time to remove the stock components. You’ll be working with the intake manifold, so take your time and keep track of any bolts you remove. Some owners have noted that the factory manifold bolt holes can be a bit tight. To ensure a smooth fit for the new, longer bolts in your kit, you may need to carefully clear the holes. A drill with the appropriate bit can make quick work of this, preventing frustrating alignment issues. Having the right tools ready is key to a hassle-free installation of your new Subaru Crosstrek upgrades.

Step 3: Install the Crawford Power Blocks

Now for the main event: installing the Crawford Billet Power Blocks. This part is surprisingly simple. The blocks are designed to fit perfectly between the intake manifold and the engine block. With an estimated install time of about an hour and a difficulty rating of just 3 out of 10, this is a great project for any DIY enthusiast. Carefully place the Power Blocks into position, making sure the gaskets are properly seated. Then, follow the included instructions to secure them with the provided hardware. Reading the steps beforehand will ensure everything goes smoothly.

Step 4: Final Assembly and System Checks

Once the Power Blocks are secure, it’s time for final assembly. Re-install the intake manifold and reconnect any hoses or sensors you removed. It’s important to note that we have updated the bolt package for our kits to resolve any past issues with hole placements, ensuring a precise fit. Double-check that you have the correct bolts from your kit. After everything is tightened to spec, give the engine bay a final look-over. Start the engine and let it idle for a few minutes, checking for any unusual sounds or warning lights. This final check confirms your installation was a success.

Common Installation Hurdles to Avoid

Even with the best instructions, you can run into a few snags. That’s just the nature of working on cars. The good news is that thousands of Subaru owners have installed these Power Blocks, and we’ve learned a few things from their experiences. Knowing what to watch for can turn a potentially frustrating moment into a quick fix. Think of this as your expert heads-up. We’ll walk through the three most common issues you might encounter and give you the pro tips to handle them smoothly, ensuring your installation is a success. By preparing for these small challenges, you can keep your project on track and get back on the road faster to enjoy your new performance parts.

Aligning the Bolt Holes

One of the most common sticking points is getting the bolt holes on the Power Blocks to line up perfectly with the engine. Due to slight variations in engine manufacturing, the alignment can sometimes be off by a hair. If you find the bolts aren’t threading in easily, don’t force them. Instead, try leaving all bolts loose until they are all threaded in by hand. You can use a tapered tool, like a punch or a Phillips head screwdriver, to help guide the block into the perfect position. This little bit of finesse is usually all it takes to get everything seated correctly before you start tightening things down.

Getting a Perfect Gasket Seal

A clean, perfect seal is non-negotiable for performance. Any air leak here will cause issues, so it’s critical to get it right. Before you install the Power Blocks, make sure both the engine and block surfaces are perfectly clean. If your Crosstrek has higher mileage (think 100,000 miles or more), we strongly recommend installing a fresh set of intake manifold gaskets. The original gaskets have been compressed by heat and pressure for years and may not create a perfect seal with the new components. It’s a small, inexpensive step that prevents major headaches and ensures you get all the power you’re supposed to from your Crosstrek upgrades.

Working with Thicker Bolts

You’ll notice the bolts included in your kit are thicker and more robust than the stock Subaru bolts. This is a deliberate upgrade for added strength and durability. However, their tighter tolerance can make alignment feel a bit trickier. The key here is patience. Always thread the bolts by hand for the first few turns to ensure you don’t cross-thread them. If a bolt feels tight, back it out and try again. Never use a power tool to start the bolts. Taking a moment to carefully hand-thread each one ensures the Power Blocks are seated properly and protects the threads on your engine for the long haul.

The Payoff: What to Expect After Installation

You’ve tightened the last bolt, wiped the grease from your hands, and put your tools away. Now for the best part of any DIY install: the test drive. The real reward for your hard work is feeling the tangible difference a quality upgrade makes on the road. The Billet Power Blocks are engineered to deliver immediate, noticeable improvements that change the character of your Crosstrek. This isn't just about abstract numbers on a dyno sheet; it's about transforming your daily commute and making your weekend adventures that much better.

So, what exactly should you be looking for once you turn the key? The feedback from the Subaru community is remarkably consistent. Drivers who install our Power Blocks often report three key benefits that make this one of the most satisfying Crosstrek upgrades you can make. First, you’ll feel a more direct connection between your foot and the engine, making the car feel more alive and eager to respond. Second, those long, challenging hills that used to force a downshift become much more manageable. And finally, you might just see a pleasant surprise the next time you check your fuel economy. Let's get into the specifics of what these changes feel like behind the wheel.

A More Responsive Throttle

One of the first things you'll notice is how much quicker your Crosstrek feels. The Power Blocks sharpen your throttle response, creating a more direct link between what your foot asks for and how the engine delivers. As one driver put it, "The car felt quicker. It revved faster, responded better when pressing the gas, and felt easier and less scary to get on the freeway." This isn't about raw top speed; it's about making the car more nimble and confident in everyday situations. Merging into traffic, passing on a two-lane road, or just navigating city streets becomes a smoother, more intuitive experience.

Improved Power for Climbing Hills

Let’s be honest: the Crosstrek can sometimes feel a bit winded on steep inclines. The Power Blocks directly address this by improving power delivery where you need it most. Drivers find their vehicles feel significantly stronger when climbing, allowing the transmission to hold a higher gear at lower RPMs without struggling. This means less engine strain and a much smoother ascent, whether you're tackling a mountain pass or just a hilly part of your commute. It’s a game-changing improvement for anyone who uses their Subaru for overlanding solutions and exploring more challenging terrain.

A Quick Note on Fuel Efficiency

While the main goal of most performance parts is to increase power, a well-engineered upgrade can also improve efficiency—and the Power Blocks are a great example. By helping your engine breathe better and operate more effectively, they can lead to better gas mileage. For instance, one owner reported their average MPG jumping from 24.5 to 27.6 on the same tank of gas after the installation. While your results will vary based on driving habits and conditions, it’s a fantastic potential benefit that makes this upgrade even more valuable. More power and fewer stops at the pump is a win-win.

DIY vs. Pro Install: Which Is Right for You?

Deciding whether to install your new Power Blocks yourself or hand the keys to a professional is a big part of the upgrade process. For many Subaru owners, getting your hands dirty is part of the appeal. You know your car better than anyone, and the satisfaction of completing a project yourself is hard to beat. This is a totally achievable weekend project for the home mechanic who has the right tools and a bit of patience. It's a great way to get more familiar with your engine bay and understand exactly how this upgrade improves your vehicle's performance.

However, it’s also important to be realistic about your skill level, the tools you have available, and how much time you can commit. There’s a difference between a simple bolt-on part and one that might require some finesse. This installation falls somewhere in the middle. Before you start, take an honest look at the steps involved and decide if it’s a challenge you’re excited to tackle or one that might be better left to an expert. The goal is to get you back on the road enjoying that extra power, not stuck in the garage with a half-finished project. There's no right or wrong answer here—it's all about what works for you and your Crosstrek.

What to Consider Before You DIY

Before you commit to a DIY installation, it’s good to know about a few hurdles some owners have encountered. Occasionally, the bolt holes on the Power Blocks may need to be slightly widened for a perfect fit, which requires a drill. The new bolts included in the kit are also a bit thicker than the stock Subaru bolts, which can make alignment a little tricky. These aren't deal-breakers, but they are things to be prepared for. We rate the installation difficulty a 6 out of 10, so while it doesn't require a master mechanic, it does demand some confidence and the right tools. If you’re comfortable with these potential adjustments, you’re likely well-equipped for the job.

When to Call in a Professional

If reading about drilling or finessing bolt alignments makes you hesitate, that’s a good sign that calling a professional is the right move. There is absolutely no shame in handing the project over to an expert—it’s the smartest way to protect your investment and your vehicle. An incorrect installation can sometimes lead to dashboard warning lights or performance issues if not addressed properly. A professional technician can handle the install quickly and correctly, ensuring everything is torqued to spec and running smoothly from the start. If you want guaranteed results and peace of mind, our team offers precision services to get your Crosstrek upgraded and back on the road.

How Do Power Blocks Stack Up Against Other Upgrades?

When you're deciding how to invest in your Crosstrek, it’s smart to weigh your options. You want upgrades that deliver real, noticeable results without breaking the bank or requiring a complete engine overhaul. While ECU tunes can offer significant gains, they can be complex, and suspension lifts are great for off-road clearance but don't add power. Power Blocks occupy a sweet spot. They are a unique mechanical modification that targets a fundamental aspect of your engine's performance—its ability to breathe. Unlike purely aesthetic changes, this upgrade provides a tangible improvement in power and responsiveness that you can feel every time you drive.

So, where do they fit in your build plan? Think of them as a foundational enhancement. They offer a significant performance-per-dollar value and work well with other modifications, making them a strategic first step or a great addition to an existing setup. Whether you're just starting to modify your Crosstrek or looking for the next piece of the puzzle, Power Blocks provide a solid, reliable gain that complements the vehicle's character. Let's break down how they compare and how they complement other popular Subaru Crosstrek upgrades.

Comparing Performance Value

When it comes to value, Crawford Billet Power Blocks deliver a solid punch. They are engineered to give your Crosstrek a measurable increase in horsepower and torque, making the vehicle feel more capable and responsive when you need it most. Many drivers find this upgrade particularly rewarding for daily driving, as it sharpens throttle response and adds confidence for merging and passing. While some mods can be subtle, the gains from Power Blocks are immediately noticeable. For a straightforward, bolt-on installation, they offer one of the best returns on investment for tangible performance gains you can actually feel from the driver's seat.

How Power Blocks Work with Other Mods

The genius of the Power Blocks is in their simplicity and synergy. By raising the intake manifold, they effectively lengthen the intake runners. This design tweak allows your engine to draw in more air, which is the key to creating more power. This modification works harmoniously with other performance parts, like an upgraded air intake or exhaust system, by improving the engine's overall volumetric efficiency. If your Crosstrek has higher mileage, we recommend replacing the intake manifold gaskets during the install to ensure a perfect seal and optimal performance. This ensures the Power Blocks can do their job effectively and support any future mods you have planned.

Long-Term Care and Maintenance

Once your Billet Power Blocks are installed, the fun is just beginning. But to keep your Crosstrek running at its peak, a little long-term care goes a long way. Think of it as protecting your investment and ensuring you get to enjoy that extra power and responsiveness for years to come. Proper maintenance isn't complicated, but it is crucial for any modified vehicle. By staying on top of a few key areas and understanding the support you have from us, you can drive with confidence, whether you're tackling a mountain pass or just running errands.

Understanding Your Crawford Performance Warranty

We stand behind the parts we design and build. That’s why our performance parts come with a standard 12-month/12,000-mile warranty. This covers any defects in materials or workmanship, giving you peace of mind that you’re installing a quality component built to last. We put this same level of commitment into everything we do, from individual parts to our complete Crawford Built Off-Road Subaru Crosstrek projects. Knowing your upgrade is backed by a solid warranty lets you focus on what matters most: enjoying the drive.

Simple Checks for Lasting Performance

Keeping your upgraded Crosstrek in top shape is straightforward. Adding a few simple checks to your regular maintenance routine will ensure everything performs as it should.

• Inspect Your Air Oil Separator: If you have one, the Crawford Air Oil Separator is key to engine health. Make it a habit to check that it’s functioning correctly, as it prevents harmful oil blow-by.
• Monitor Fluid Levels: This is a golden rule for any car, but it’s especially important for a modified engine. Regularly check your engine oil, coolant, and other fluids to keep everything running smoothly and prevent unnecessary strain.
• Check Tires and Brakes: More power means you need reliable stopping power. Give your tires and brakes a regular look-over to make sure they’re in good condition to handle the vehicle’s enhanced performance safely.

Related Articles

• The Ultimate Crosstrek Off-Road Build Guide
• How to Choose the Best Subaru Performance Parts
• The Ultimate Subaru Engine Upgrade Guide

Frequently Asked Questions

Do I need to get my ECU tuned after installing the Power Blocks? No, a tune is not required. These Power Blocks are engineered as a mechanical upgrade that works perfectly with your Subaru's stock engine management system. The performance gains come from physically changing the airflow dynamics of your intake manifold, not from altering software. This makes it a straightforward, bolt-on modification that delivers results right out of the box.

Will installing these Power Blocks void my Subaru factory warranty? This is a common concern with any aftermarket part. Legally, a manufacturer cannot void your entire vehicle warranty just because you've installed an aftermarket component. They must prove that the specific part you installed was the direct cause of a specific failure. Our Power Blocks are made from high-quality materials and are designed to work safely within your engine's parameters.

Is this a permanent modification, or can I return my car to stock? This modification is completely reversible. Because the Power Blocks are designed as a direct bolt-on part, you can remove them and reinstall the factory components at any time. Just be sure to keep your original intake manifold bolts in a safe place in case you decide to return your Crosstrek to its stock configuration later on.

My Crosstrek has over 100,000 miles. Is this still a good upgrade for my car? Absolutely. This is a great upgrade for a higher-mileage Crosstrek. The only extra step we strongly recommend is replacing the original intake manifold gaskets during the installation. After years of heat and pressure, old gaskets can become brittle and may not create a perfect seal with the new components. Installing a fresh set ensures you get a leak-free fit and the full performance benefit.

What's the biggest difference I'll feel? Is it just for off-roading? While the added torque is fantastic for trails and climbing, the most immediate difference you'll feel is in everyday driving. Your throttle will feel more responsive, making the car feel quicker and more eager when merging onto the highway or pulling away from a stop. It addresses that slight hesitation many drivers notice, making your daily commute more enjoyable and confident.