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MAHLE Coolant Thermostat Housing Gasket 17-22 GM 6.6L Duramax L5P
MAHLE

MAHLE Coolant Thermostat Housing Gasket 17-22 GM 6.6L Duramax L5P

MPN: MAH-C33723
Daily Driver
$9.37
Ships From Supplier · Ships in 3–7 business days
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Need a reliable gasket to seal your engine’s coolant thermostat properly? The MAHLE Coolant Outlet Gasket is an OE-quality sealing solution that maintains a tight connection. Over time, original gaskets can degrade from heat cycles, pressure, and coolant exposure, leading to seepage or leaks. Replacing the gasket with a precision-engineered MAHLE component restores a dependable seal, helping maintain correct cooling system pressure and preventing coolant loss that could lead to overheating or reduced engine efficiency.

Manufactured to meet or exceed original equipment standards, the MAHLE C33723 is produced using high-quality gasket materials engineered to resist heat, coolant exposure, and long-term compression set. Precision die-cut construction ensures an accurate fit for straightforward installation and reliable sealing performance. Designed for durability in demanding engine environments, MAHLE gaskets are trusted by professional technicians and engine builders for dependable repairs and long service life in cooling system maintenance.

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.

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.