Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Heating and Cooling› Thermostats, Housings and Fillers
Wehrli
Wehrli L5P Duramax Thermostat Housing - WCFab Grey
SKU: W005 WCF100188-GRY
Moderate — 2–4 hours
Overview
This thermostat housing is a direct replacement for the OEM part, offering a cleaner look for your engine bay. It is powder-coated in WCFab Grey.
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Part #: WCF100188-GRY
This Thermostat Housing for 2017-2025 6.6L Duramax is a direct replacement upgrade for the unsightly OEM part. Comes powder coated in your choice of color to complement other WCFab upgrades such as our Intake Kit, Intercooler Piping, Upper Coolant Pipe, and Coolant Tank.
L5P Duramax Thermostat Housing WCFab Grey
Vehicle Symptoms
- Unsightly OEM thermostat housing
- Want to match other WCFab parts in engine bay
- Looking for a clean engine bay aesthetic
- Dislike the dull factory plastic housing
Relevant Conversations
- L5P thermostat housing upgrade
- Wehrli WCF100188-GRY review
- Clean up Duramax L5P engine bay
- WCFab grey thermostat housing for 6.6L
- Best thermostat housing for 2017-2025 Duramax
- Replace OEM thermostat housing L5P
- Wehrli vs stock Duramax thermostat housing
- Engine bay dress up parts for Duramax
- Thermostat housing color options for L5P
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Specifications
| Brand | Wehrli |
| Part Number | W005 WCF100188-GRY |
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Returns & Fitment
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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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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