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Heating and Cooling› Thermostats, Housings and Fillers

Pacific Performance Engineering

04.510 GM 6.6L DURAMAX LLY/LBZ/LMM THERMOSTAT HOUSING COVER POLISHED

$119.99 $113.90 Save $6.09

SKU: P00X 119000543

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Pacific Performance Engineering 119000543 is a thermostat housing cover designed to replace rusty OEM parts on GM 6.6L Duramax engines. Constructed from cast 304 stainless steel, it offers corrosion and rust resistance while adding style to the engine bay. The cover features a direct bolt-on design for easy installation. It also includes a black anodized aluminum bleeder screw with a built-in air channel and Viton O-ring for efficient air purging from the coolant system.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandPacific Performance Engineering
Part NumberP00X 119000543

Videos

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Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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