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Shop / Engine / MAHLE Cylinder Head Gasket 01-16 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML
MAHLE Cylinder Head Gasket 01-16 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML
MAHLE

MAHLE Cylinder Head Gasket 01-16 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML

MPN: MAH-55023
Tow PigStreet Performance
$88.86
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Fitment sensitive
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Are you replacing a damaged head gasket to restore proper sealing and engine compression? The MAHLE Cylinder Head Gasket is a high-quality OE replacement designed to seal the cylinder head to the engine block, preventing leaks of combustion gases, coolant, and engine oil. A properly functioning head gasket is critical for maintaining engine compression, temperature control, and overall reliability. This gasket is manufactured for GM 6.6L Duramax engines, making it a dependable solution during engine rebuilds or major service repairs.

Manufactured with a multi-layer steel construction, the MAHLE Head Gasket is engineered to deliver exceptional sealing performance under high combustion pressures and extreme engine temperatures. The layered steel design helps maintain gasket integrity while accommodating expansion and contraction between the cylinder head and engine block. Built to meet or exceed original equipment specifications, MAHLE head gaskets deliver long-lasting durability and precise fitment for professional engine repair and rebuild applications.

Warranty
Warranty based on supplier terms

Diesel Power Products directs warranty claims to the respective manufacturer; coverage and duration depend on that manufacturer and product. Its one-year manufacturer-defect warranty applies only to products manufactured by Power Products Unlimited Inc., not all products it sells. Manufacturer inspection is required; DPP does not pay inspection/return shipping or labor.

Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.

Diesel Power Products warranty policyView complete warranty

Product conditions

Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.

Professional installation is recommended.

Return eligibility
Diesel Power Products states a 30-day window from receipt for eligible new, uninstalled, unopened and complete items in original packaging, with prior approval/RMA. Custom tuners and specified opened tools are excluded. Customer pays return shipping; original outbound shipping, including initially free shipping, is deducted. No standard restocking percentage is stated for ordinary approved returns. Based on what Diesel Power Products offers.
Return window
Not stated for this product; see supplier terms
Restocking fee
See supplier terms; no product-specific fee stated
Return shipping
Based on the supplier’s return policy; see terms
Made to order
No
Backorder status
Not backordered
Cancellation
Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
Warranty provider
Diesel Power Products
Warranty duration
Product-specific duration not stated; see supplier terms
Compatibility
Listed for specific vehicle configurations
Legal use
Street legal
Processing estimate
3–7 business days supplier processing
Shipping
Shipping calculated at checkout
Signature
No signature requirement
Supplier
Diesel Power Products

Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.