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Description
Kawasaki GASKET-HEAD315801-1121AA blown head gasket causes loss of compression, oil contamination and overheating this genuine OEM replacement seals correctly the first time. Compatibility FH series (verify your model number before purchasing) FX series FR series FS series Important: Always verify your exact engine model number and serial number before purchasing. Kawasaki engine series share many part numbers but not all parts are interchangeable between variants. Part Details OEM
A blown head gasket causes loss of compression, oil contamination and overheating — this genuine OEM replacement seals correctly the first time.
✅ Compatibility
- FH series (verify your model number before purchasing)
- FX series
- FR series
- FS series
⚠️ Important: Always verify your exact engine model number and serial number before purchasing. Kawasaki engine series share many part numbers but not all parts are interchangeable between variants.
🛠️ Part Details
- OEM Part Number: 315801-1121A
- Replaces: Verify with your Kawasaki dealer or engine manual
- Brand: Kawasaki — Genuine OEM
- Type: Original Equipment Manufacturer (OEM) replacement
⭐ Key Features
- OEM-spec multi-layer or composite construction for your engine's compression
- Precision fire ring bore seals combustion gases at correct pressure
- Correct thickness maintains OEM compression ratio
- Oil and coolant passage seals prevent cross-contamination
- Torque-to-yield design provides uniform clamping across the head
🔧 What Problem This Solves
- Loss of compression causing hard starting and low power
- White exhaust smoke from coolant entering the combustion chamber
- Oil contamination in the coolant or vice versa
- Overheating from loss of coolant due to external head gasket leak
📏 Specifications
- Part Name: Cylinder Head Gasket
- Material: Multi-layer steel or composite fibre with rubber seals
- Manufacturer: Kawasaki
- Condition: New — Genuine OEM
🔨 Installation
- Difficulty: Advanced
- Tools Required: Torque wrench, Head bolt socket set, Straight edge, Gasket scraper
- Estimated Time: 2–4 hours
- Tip: Always consult your Kawasaki engine service manual for torque specifications and step-by-step procedures.
💪 Why Choose This Part
Never reinstall a head without a new OEM gasket — the cost of a second teardown far exceeds the gasket price.
🛒 Order With Confidence
✓ Genuine OEM — Guaranteed Fit — This is a genuine Kawasaki OEM part backed by the manufacturer's quality guarantee. If you have any questions about compatibility, provide your engine model and serial number and our team will confirm fitment before you purchase.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
Mostly good goggles, discomfort on nose-bridge - not for big noses!
Color: Black (Black-color Lens)
It's difficult to find good quality goggles that I actually like, but these get pretty close. For context I swim every Monday before work as a workout, so there's a few aspects I look for/are important for me and these tick most of the boxes.
1) Comfort - Probably the most important factor. These are very comfortable around the eyes, the rubber is soft and they don't leave rings. My old goggles always did and walking into work with "raccoon eyes" turns heads. These don't leave rings and are still watertight. Only complaint is the plastic over the nose-bridge is angled inward, towards your nose, instead of outward away from your nose/following the line of your nose away from your face. And it's thick, so it digs into my nose. It's not a game-killer but I feel it and it's uncomfortable. It will be the thing that pushes me to try a different pair next time. If you have a "big" nose or one that curves outward from the top, I don't recommend these goggles. They will be uncomfortable for you.
2) Clarity - These are very clear and don't distort your vision underwater. They don't fog up (at least for now) and provide a wide range of vision. Good work.
3) Fitting - The strap is easy and intuitive to adjust but leaves a bit to be desired as it's a single strap around the back of your head. I like the security of 2 straps/a split strap that straddles the back of your head holding the goggles firm in place and preventing up/down movement. The good news is I haven't had issues with this yet, so it could just be a change in what I'm used to that makes no functional difference, but I'd be a little concerned to dive off a starting block as I'd worry they might release. Again, I HAVE NOT done this and I haven't had any issues, it is just a feeling. The button quick-release is a nice effortless way to pop them off when I finish and I'm tired!
4) Other - The case is a nice touch! I hate my goggles getting scratched and this helps prevent that. Nice to have.
Overall - They are comfortable around the eyes, don't leave rings, are clear & don't fog up, and functionally have been great with the quick-release & included case. They may be uncomfortable on "big" or "protruding" noses due to nose-bridge design & thickness.
4 stars because they dig into my nose a bit...and I never thought I had a funny nose but maybe I do!
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Reviewed in the United States on December 12, 2016
★★★★★ 5
Great customer support, but blurry underwater for me.
Color: Blue Hawaii
I'm a casual lap swimmer who swims 30 minutes every day. Needed some decent goggles and saw the Aegend brand was a highly rated bestseller. I first ordered the mirrored version of this lens which is essentially identical to this clear version. Was really excited to hit the pool when I received the goggles. Love the strap system on these Aegends which adjust on the back and has a quick release button...my other goggles have a little short strap that adjusts at the temple and it drives me crazy. Goggles are very comfortable and never fogged up during my swim. Nice field of view.
What's the issue then? These goggles are perfectly fine and clear above water, but blurry underwater. The blurriness is like a prism effect. My local YMCA has small tiles and with these goggles the tile lines were duplicated several times over. The effect isn't bad and perhaps some may be able to live with it, but it was annoying to me. Contacted Aegend customer service and they asked if I was myopic (no) and offered to send a replacement free of charge including a choice of couple different models. I chose instead to return the mirrored version and rebuy this clear one thinking perhaps the mirrored tint had something to do with it. Second pair of goggles arrived and same thing--clear above water and blurry underwater. Aegend says not everybody's eyeballs are built the same and again offered to replace the goggle free of charge including to their flat lens which shouldn't have the blurry prism effect. I declined since I know the strap design on their flat lens goggle would drive me crazy.
So in summary--these goggles are great and customer support is first rate. But I cannot give the goggles 5 stars since they didn't work for my eye profile and caused everything underwater to be blurry. Doesn't seem like the majority of people buying these goggles have the same issue though so I wouldn't hesitate buying them to see if they work for you.
UPDATE 2/14/17. I'm revising my review to 5-stars. Aegend once again contacted me and tried to make things right. They had another swim goggles with the clasp on the back like the one for this product but with a flat lens (https://www.amazon.com/dp/B01MTXI8SV). These new goggle work great and are clear underwater. Can't say enough about a company that stands by their products like Aegend.
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Reviewed in the United States on February 3, 2017
★★★★★ 5
Excellent Goggles — Comfortable, Secure, and No Leaks
Color: Aqua
These goggles are excellent quality and were very easy to adjust. They have good suction and fit nice and tight without being uncomfortable and stayed secure the entire time I was swimming. Not much for style, but these do look pretty cool.
I wore them for about an hour with no issues at all—they remained comfortable and didn’t leak, which is a huge plus. The seal held up well without leaving painful pressure marks.
The included case is also a great bonus and makes storage and travel easy. Overall, a very solid pair of goggles that perform exactly as expected. Definitely recommend.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
Good buy
Color: Bright Orange
Great goggles. Fits tight and looks great
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Reviewed in the United States on April 28, 2026
★★★★★ 5
A great pair of goggles
Color: Aqua
Excellent goggles they fit comfortably are easy to adjust and I love the color.
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Reviewed in the United States on May 18, 2026