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Cometic Street Pro GM Gen-6 L21/29 454 Big Block 4.375in Bore .040in Top End Gasket Kit

Marsoni M251S
Sale price$123.47
Pay 4 payments of $30.87 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Cometic Street Pro GM Gen-6 L21/29 454 Big Block 4.375in Bore .040in Top End Gasket KitCOMETIC StreetPro Kits cater to the budget minded street rodder who is looking to purchase a kit with all necessary gaskets and seals needed for their rebuild. Quality gasket materials are a priority in StreetPro kits. Kit materials include: MLS, AFM, Aramid Fiber, and Armor Clad. This Part Fits: Year Make Model Submodel 1996 1997,1999 2000 Chevrolet C2500 Base 1996 1998 Chevrolet C2500 Cheyenne 1999 2000 Chevrolet C2500 LS 1996 1998 Chevrolet C2500
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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]
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4.4 ★★★★★
Based on 1051 reviews
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Verified Purchase
Christopher Flores
Belleville, US
★★★★★ 5
Very good option
Better than the oiled version, if you're not chasing track performance. Fit perfectly into my Accord. I still get 34MPG, so it's at least as good or better than OEM, and still better than other options you'll find. No complaints here.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
E
Verified Purchase
Enrique serrano
Natrona Heights, US
★★★★★ 5
Late and damaged box
Nice but arrived to late
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
B
Verified Purchase
Bella Davis
Natrona Heights, US
★★★★★ 5
Amazing Product!!!
It’s a great fit for my 2017 Honda accord! And there was defiantly improved function in my car! It defiantly saves me money and is a good price for what it is. It also made my car smell a thousand times better!
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Reviewed in the United States on July 20, 2025
A
Verified Purchase
aprilsalex
Omaha, US
★★★★★ 5
Fits great
Perfect
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Reviewed in the United States on December 30, 2025
S
Verified Purchase
scott
Charlottesville, US
★★★★★ 5
Still going strong
Still going strong
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Reviewed in the United States on May 15, 2026

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