Description

Subaru 2.5 WRX STI CYLINDER HEADS B25

CORE RETURN REQUIRED.

Please leave us any information about your cylinder head to insure the correct one is sent to you:  Example- The cast number is or I need the driver side head.

PLEASE INCLUDE YOUR AREA CODE AND TELEPHONE NUMBER

Clearwater Cylinder Head, Inc. thoroughly cleans, inspects, and pressure tests all our cylinder heads. All seat and guide work is performed as needed on the lastest state of the art Serdi or Sunnen seat and guide machine. The head then moves on to a Rottlier CBN resurfacing machine where it is cut to the required RMA finish. We then install a quality valve seal and pull a vacuum on each valve to insure there is a perfect seal between the valve and the seat. All machine work performed on the latest state of the art equipment. Head is complete and ready for installation.

WE ARE A HUGE CYLINDER HEAD SHOP WITH THOUSANDS OF HEADS IN STOCK. WE DEAL WITH ALL MAKE AND MODEL CYLINDER HEADS. IF YOU DO NOT SEE THE CYLINDER HEAD YOU NEED PLEASE CONTACT US 1-800-572-1963.
HAVE A RARE OR HARD TO FIND CYLINDER HEAD? LET US REBUILD YOUR CYLINDER HEAD FOR YOU.
Hours of operation Monday – Friday 8 AM to 5 PM EST

SHIPPING RATE APPLIES TO CONTINENTAL UNITED STATES ONLY. ALASKA, HAWAII, GUAM, VIRGIN ISLANDS, AND PUERTO RICO PLEASE E-MAIL OR CALL FOR SHIPPING RATES
SHIPPING INFORMATION: We ship worldwide.
Insurance, packaging, and handling are all included in the shipping price.
International Bidders, when inquiring about shipping fees please include city, country AND POSTAL CODE.

YOUR OLD CYLINDER HEAD:
We have no up-front core charge and we give you 30 days to return the core.
We make it easy for you to return your core as we provide you with a prepaid UPS peel and stick return shipping label located with the invoice on the outside of the box behind the plastic. Just put your core head in the box that you received your new/rebuilt head in and attach the prepaid peel and stick label. You may then give the box to any UPS driver you may see, or take the box to any UPS pickup point. We will accept your old cylinder head no matter what is wrong with it as long as it includes all the parts that the new head came with. You will never be charged extra because your old head is damaged. Cracked head? OK! Bent valves? NO PROBLEM! Head taken apart? UNDERSTANDABLE! (as long as you put all of the parts in the box). We have no up-front core charge.

WARRANTY INFORMATION: Clearwater Cylinder Head, Inc. provides a TWO(2) year unlimited mileage warranty. A copy of the warranty card will be enclosed with your invoice.
Clearwater Cylinder Head, Inc.
5100 Ulmerton Road #2
Clearwater, FL 33760 USA
Clearwater Cylinder Head, Inc. is dedicated to quality craftsmanship and is pleased to offer this warranty. We invite you to read this entire document carefully prior to installing your cylinder head.
Please do not hesitate to contact us should you have any questions.
1) Acceptance of this head constitutes acceptance of this warranty.
2) Heat tab must be in place on head, not altered or melted.
3) Any claim must be returned to Clearwater Cylinder Head, Inc. for inspection. A copy of invoice must accompany head. A Return Authorization number must be obtained.
4) Only 1 (one) warranty per purchase.
5) Warranty begins at the date of purchase.
6) No incidental, consequential, punitive or over the road damages.
N O L A B O R
WARRANTY COVERS:
Parts Warranty only – All original cylinder heads must be returned for warranty.
WARRANTY DOES NOT COVER:
1) Damage caused by improper installation, accidental over heating, abuse or neglect.
2) Loss of time, use of vehicle, phone calls, inconvenience or consequential charges.
3) Fluids, tow charges, rentals or diagnosis.
4) Repairs made without prior authorization will void all warranties.
5) No warranty on Commercial, Industrial Racing/ Pro stock or Marine Use
If you are not in the United States and you want a shipping quote please include your country and postal/zip code when inquiring.

Why Does A Cylinder Head Need To Be Replaced?

At various times in your vehicle’s life, you may experience performance issues that stop it from working to its full capacity. A cylinder head failure is a common issue. A cracked or broken head can prevent your engine from performing to the best of its ability. Keep reading to discover why your cylinder head might fail and when you would need to replace this part in the future.

 

Why Does a Cylinder Head Fail?

The number one reason that we see cylinder heads fail is due to overheating. This overheating can be caused by coolant loss or restricted flow of the coolant. When a cylinder head is cracked or damaged, it can result in damage to your whole engine in some cases, which is why it’s critical to act upon this issue as soon as possible. If you notice high oil consumption, your engine overheating, or poor fuel mileage, then make sure you get your cylinder head and engine checked out to see if a replacement is the best option for you.

 

Why Is The Cylinder Head Important?

The cylinder head is designed to control the airflow in and out of the cylinders. It helps to control the fuel deployment process, holding the injectors and valves. In fact, it actually contains more moving parts than you’ll find elsewhere in the engine, which is why it’s critical for the overall performance of your engine.

The cylinder head was originally invented by Samuel Dalziel Heron, an aerospace engineer born in Britain. During his time working there, he researched the first air-cooled cylinders before relocating to the USA to continue his career. The cylinder head is now an instrumental part of any vehicle, with various designs based on the car you are driving. It’s important to learn the signs of a cracked cylinder head, which will ensure you get it replaced or repaired when needed.

 

How Do You Know If Your Cylinder Head Is Cracked or Damaged?

If you have a cracked cylinder head, there are many signs you might notice to indicate this. Firstly, you may notice white smoke or steam coming from the exhaust pipe, suggesting a failure in this area. Low coolant levels or the engine overheating are other common symptoms of a cracked cylinder head.

Your vehicle performance is likely to be impacted if your cylinder head is cracked, with poor running conditions or misfiring. The warning lights may be illuminated on your dashboard, suggesting you need to check the engine. Finally, combustion gases in the cooling system are another common issue we see when the cylinder head cracks, encouraging you to seek assistance from a garage as soon as possible.

 

Can A Damaged Cylinder Head Be Repaired?

Now that you know the key signs of a cylinder head needing a repair, you might be wondering if this is even an option in the first place. The good news is that a cracked cylinder head can be repaired, but this option will naturally depend on the number of cracks in the cylinder head and the severity of these cracks. Pinning and welding are the most common techniques used when it comes to cylinder head repairs, offering a relatively fast and cheap repair solution. The cost of the repair will vary on how much work is needed, as well as whether parts need to be purchased. You’ll want to speak with a professional to assess your unique situation and discover whether it’s realistic for your cylinder head to be repaired.

 

Should You Buy A Used Car With A Damaged Cylinder Head?

Used cars are a great way to save money on your next car purchase. If you’ve found the perfect vehicle for you, but it comes with a damaged cylinder head, you’ll want to ensure you assess this situation very carefully before going ahead with the purchase. We don’t necessarily recommend completely ruling out this option though. As shared above, repairing a cylinder head is a realistic solution for many vehicles, but it will all depend on how severe the damage is to the engine. You’ll want to get a used car checked out by a mechanic first to ensure you aren’t purchasing a vehicle that’s completely past the point of repair. By taking the time to research your options and learn more about the repair process, you can figure out if this is a sensible move for you.

 

Cars Known for Cylinder Head Problems

Some vehicles are more likely to require a cylinder head replacement than others, which is worth researching when considering your next car purchase. The 2011 Chevrolet Cruze often comes out on the top of the list for issues with the cylinder head, and you’ll find there are other similar vehicles on the market that may be less problematic. You may be surprised to learn that multiple BMWs are also known for having these issues because they all share the same engine. Keep in mind that this can be a very costly replacement in this type of vehicle, with BMW X1 owners often paying thousands of dollars at a BMW dealership for the repair. A local mechanic is likely to offer you a better rate, which is where we’d always suggest going for your work.

Other vehicles which commonly experience cylinder head issues include the 2011 Buick Lucerne, the 2011 Subaru Impreza, and the 2015 Buick Encore. Remember, no matter what vehicle you drive, it’s critical to be aware of the signs of a cracked cylinder head to protect your engine in the future.

If you notice the signs of a cracked cylinder head when driving, we always recommend checking out your engine and this part as soon as possible. The longer you leave the issue when driving, the more likely you will experience further damage to your vehicle in the future. While there are some vehicles that are more likely to have this challenge in the future than others, be aware that your cylinder head is critical for a safe driving experience, so make sure you do all you can to keep it in top condition.

Replacing Cylinder Heads in a Subaru

Subaru Corporation (formerly known as Fuji Heavy Industries) is a Japanese headquartered automobile manufacturer. As Fuji Heavy Industries, the company’s focus was aircraft research and manufacturing. In 1953, Fuji Heavy Industries’ CEO, Kenji Kita, desired to get the company involved in car manufacturing and on July 15th the Subaru Corporation was born. Subaru is the Japanese name for the Pleiades “Sever Sisters” star cluster (one star is said to be invisible), thus Subaru’s six star logo. As the 22nd largest automaker in the world, Subaru is known for its Boxer engine design and all-wheel drive capability, making Subaru popular for off-road vehicles and sports cars. Popular Subaru vehicles include the Subaru Outback, Subaru Forester, Subaru Impreza, Subaru Crosstrek, and Subaru Legacy.

Subaru’s famous Boxer engine is an aluminum constructed horizontally-opposed flat engine with cylinder that lay on their sides. Half of the engines cylinder lie on the left side of the engine and half on the right separated by a crankshaft. The engines pistons face away from each other in an 180˚ symmetrical layout and move horizontally. Subaru’s unique engine layout provides many benefits. The engines symmetry provides good rotational balance and thus, a smoother, less vibrational feel. Its flatter and lighter design allows the engine to be mounted lower in the vehicle providing a lower center of gravity and safer, more stable handling – good for off-roading and racing.

Due to the Subaru Boxer engine’s unique design, it requires equally as unique cylinder heads. The cylinder head (along with the head gasket) is the portion of the engine that sits over the cylinders protecting the engine components and creating the correct vacuum for a gas-powered engine to work. The cylinder head works with the camshaft, induction, and exhaust systems to process fuel, air, and exhaust giving your car its horsepower. Leaks or cracks in your cylinder heads can cause excessive damage to your engine. Vehicles require the correct shape, size, and quality of cylinder heads to work properly and help avoid costly engine repairs. Click here to purchase Subaru cylinder heads!

You may need to consider a cylinder head replacement at some point in your vehicle’s life. Whether you find performance issues with your vehicle or your cylinder misfires, replacing a cylinder head is a great option to extend the life of your beloved car. A common question we receive at Clearwater Cylinder Head is whether you can just replace one cylinder head in a vehicle engine. Keep reading as we answer this question and discover some potential risks of a single-head replacement.

 

Exploring Your Options and Considerations for a Single Cylinder Head Replacement

When a single-cylinder head fails, you can see various challenges when driving your vehicle. Just as you would need to consider replacing the cylinder heads when all of them fail, you’ll also need to find a way to resolve the concern of just one head failing. One of your cylinder heads may become damaged from overheating, freezing, or physical damage. Continuing to drive with one damaged cylinder head can still be dangerous and permanently damage your engine.

Poor quality gasoline can create a blockage within the fuel system, resulting in a single cylinder misfire even when idle. You may notice that your engine makes unusual noises or has reduced fuel efficiency and stalling problems when this issue occurs. Another common question we get is whether you can continue driving if you have just one cylinder head damaged. Typically, we recommend resolving this issue as soon as possible, or you may cause long-term damage to your engine that could be difficult to repair.

 

Can You Replace Just One Cylinder Head? Considerations For Replacing One Versus All Cylinder Heads

When you realize that just one of your cylinder heads is damaged and may need replacing, one of the first things you’ll no doubt question is whether you can save money by just replacing the one part. The first thing to research is whether your engine has individual cylinder barrels. If this is the case, the option to unbolt and replace the individual barrels may exist. Other engines have a solid block to which the cylinders are attached, making them more challenging to replace. The damage to your cylinder heads will also help you decide whether a repair or replacement is needed. With severe damage, a replacement will be the primary option to consider to protect your engine and vehicle.

 

Cost Analysis of Replacing One Cylinder Head Versus All Cylinder Heads

When just one cylinder head is damaged, you can just replace that part if the others are in good condition. However, labor is a large part of paying for this replacement. While the parts are not cheap, you’ll find that replacing just one is unlikely to save you a huge savings on a full replacement. As you may need to replace another in the future, it may just be best to get it over with. You’ll also enjoy balanced performance levels when you complete a full replacement, as you’ll have the same parts throughout the engine.

 

Compatibility Issues: Can You Mix Old and New Cylinder Heads?

While it is possible to mix old and new cylinder heads, in most cases, you’ll find that this isn’t the wisest option. When you combine a brand-new cylinder head and one that might have ten years of wear and tear, there will naturally be a difference in the performance quality. Although you may think it’s great to save money by just replacing the broken part, consider this a long-term investment and upgrade of your vehicle. Technology has developed over the years, and if you choose a cylinder head to improve efficiency, you’ll want to ensure you aren’t using this alongside an older model.

 

Potential Risks of Replacing Only One Cylinder Head

Replacing one cylinder head increases the chances of you paying for another replacement in the near future. When only one part is replaced, you still have another old part in use that is likely to become damaged. The difference in the cylinder heads can also put too much pressure on one part, leading to it getting damaged quicker than it would otherwise.

 

Importance of Diagnosing the Underlying Issue Before Replacing Cylinder Heads

Drivers are often so keen to get back on the road and replace a cylinder head that they don’t spend the time reviewing what caused the damage in the first place. There are many factors to consider when replacing any part of the engine. You’ll want to ensure you thoroughly inspect your vehicle and engine for any other damage so that you don’t find yourself working with a mechanic again in the near future.

 

Success Stories and Cautionary Tales Regarding Cylinder Head Replacement

Many vehicle owners have replaced their cylinder heads successfully. If you have an older vehicle that you truly love driving, this is a great way to ensure you can keep experiencing the benefits of your vehicle for years to come. If all other aspects of the engine and vehicle are working well, a cylinder head upgrade could be the thing that keeps you on the road for years to come. The number one advice we share with vehicle owners is to ensure you choose the right cylinder head for your vehicle model. Cylinder heads are not a one-size-fits-all vehicle part and require selecting a part that will work effectively in your vehicle without causing further damage.

 

Final Advice for Vehicle Owners Facing Cylinder Head Issues

As a vehicle owner, we encourage you to seek assistance and investigate any challenges with your cylinder heads and engine as soon as you notice them. Prolonging the replacement of your cylinder heads will only increase the chances of issues in the future. By choosing the right replacement parts, you can get back on the road in no time and extend the life of your vehicle.

 

ABOUT CLEARWATER CYLINDER HEAD

Clearwater Cylinder Head (CCH) is your one-stop shop for cylinder heads. We offer top quality cylinder heads, ensuring a full replacement to combat multiple changes over time. We also house a large inventory of heads for cars, trucks, heavy machinery, and even boats. Please call 800-572-1963 if you prefer to order by phone instead of online.

Subaru 2.5 WRX STI CYLINDER HEADS B25