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MAHLE EGR Valve Gasket 04.5-05 GM 6.6L Duramax LB7/LLY
MAHLE

MAHLE EGR Valve Gasket 04.5-05 GM 6.6L Duramax LB7/LLY

MPN: MAH-F31913

Is it time to repair an EGR system leak? The MAHLE EGR Valve Gasket is an OE-style replacement designed to seal the connection between the EGR valve and EGR cooler assembly. Over time, extreme exhaust heat and repeated…

Daily Driver

Race / competition use only

This product is not legal for use on public roads or on pollution-controlled vehicles. By purchasing, you confirm it will be used only for off-road / race purposes and that you are responsible for lawful use.

Emissions-related component. Race/competition use only — not legal for use on public roads or on any pollution-controlled vehicle.

$4.33
Ships From Supplier · Ships in 37 business days
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Fitment sensitive
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Warranty
Warranty Information Pending

Warranty information has not yet been provided for this product. Contact FullSpecDiesel for help locating the applicable manufacturer or supplier warranty.

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Is it time to repair an EGR system leak? The MAHLE EGR Valve Gasket is an OE-style replacement designed to seal the connection between the EGR valve and EGR cooler assembly. Over time, extreme exhaust heat and repeated thermal cycling can cause the original gasket to degrade or compress, allowing exhaust gases to escape and potentially causing soot buildup, rough engine operation, or emissions system faults. Installing the F31913 restores a tight seal and helps maintain proper EGR function on GM 6.6L Duramax engines. Manufactured to meet or exceed original equipment specifications, the MAHLE F31913 features a durable steel gasket construction that withstands high exhaust temperatures and pressure fluctuations within the EGR system. Precision stamping ensures accurate alignment and consistent sealing pressure between mating surfaces, helping prevent leaks even under demanding diesel operating conditions. Designed as a direct-fit replacement for EGR cooler applications with offset bolt holes, this gasket delivers dependable OE-quality sealing performance trusted by professional diesel technicians and engine builders.

Product conditions

Race / competition use only. Not legal for sale or use on pollution-controlled vehicles or on public roads. Emissions-related component. Race/competition use only — not legal for use on public roads or on any pollution-controlled vehicle.

Professional installation is recommended.

Return eligibility
Returnable within 30 days of confirmed delivery, in original condition, with an approved RMA
Return window
30 days from confirmed delivery
Restocking fee
No restocking fee
Return shipping
Customer pays return shipping on voluntary returns
Made to order
No
Backorder status
Not backordered
Cancellation
Cancellation is only possible before the supplier order is submitted
Warranty provider
Warranty Information Pending
Warranty duration
Pending verification
Compatibility
Listed for specific vehicle configurations
Legal use
Competition use only
Processing estimate
3–7 business days supplier processing
Shipping
Shipping calculated at checkout
Signature
No signature requirement
Supplier
MAHLE

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