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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 24 - Jul 29
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Cometic MLS Left Side Head Gasket 01-07 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML | .140"Built for reliability under stock or high performance conditions, this premium multi layer steel (MLS) head gasket delivers consistent sealing for GM Duramax engines. Designed to maintain proper cylinder pressure and withstand extreme heat and boost, its available for both Left (Driver) and Right (Passenger) side fitment. Choose from multiple thickness options to match your piston protrusion, head resurfacing, or compression ratio needs: . 027"
Built for reliability under stock or high-performance conditions, this premium multi-layer steel (MLS) head gasket delivers consistent sealing for GM Duramax engines. Designed to maintain proper cylinder pressure and withstand extreme heat and boost, it’s available for both Left (Driver) and Right (Passenger) side fitment.
Choose from multiple thickness options to match your piston protrusion, head resurfacing, or compression-ratio needs:
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.027" – Factory-level thickness for untouched surfaces
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.055" – Slightly thicker to accommodate minor machining
We currently only offer the Left Side in .055" thickness -
.084" – Mid-range thickness for rebuilt or performance applications
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.140" – Extra-thick option for significant resurfacing or lowered compression on high-boost builds
Whether you're completing a stock refresh or assembling a competition-level Duramax, this MLS gasket ensures a secure, long-lasting seal.
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