Heating and Cooling› Water Pumps
Merchant Automotive
Upper Bypass Pipe Seal at Thermostat Housing LB7 LLY LBZ LMM LML 2001-2016 Duramax
SKU: M01D 94011602
Easy — 1–2 hours
Description
It is a direct-fit o-ring seal intended to maintain the integrity of the cooling system.
Fitment
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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
| Brand | Merchant Automotive |
| Part Number | M01D 94011602 |
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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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