★★★★★ 5
Works great
Worked great and easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
Cometic GM LS1 SB 4.000 inch Bore .040 inch MLS Head Gasket
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Cometic GM LS1 SB 4.000 inch Bore .040 inch MLS Head GasketComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". Cometic MLS (Multi Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two
Quick Dispatch:
Your Cometic GM LS1 SB 4.000 inch Bore .040 inch MLS Head Gasket orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your Cometic GM LS1 SB 4.000 inch Bore .040 inch MLS Head Gasket ships.
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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
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4.7 ★★★★★
Based on 2322 reviews
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Product Reviews
★★★★★ 5
2007 Honda Accord coupe
Perfect fit for a 2007 accord coupe or sedan. Fixed a noisy power steering pump straight away on a 240,000 mile car. Easy DIY fix
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 29, 2026
★★★★★ 4
No issues
Great aftermarket o ring. If for whatever reason OEM isn’t possible, these o rings will work perfectly fine. Had no issues installing into power steering system. Still would recommend Honda o rings if you can because they are also cheap.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
★★★★★ 5
Fixed noisy and leaking power steering pump
My daughters 2008 Honda Accord 2.4L 4 cylinder that had a very noisy power steering pump which was also starting to leak. I was about to buy a new pump when I found out it might just be leaking from the hoses to the pump. I bought these O rings for the hose connections at the power steering pump, and spent 15 minutes replacing them. Pump is quiet again! The suction hose can develop a leak, letting air get into the pump which creates the loud noises.
This fix is all I needed, and was much cheaper and faster than replacing the power steering pump.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Perfect!
Fits exactly on my 2000 civic and I have not had any issues!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
