Heating and Cooling› Overflow Tanks and Catch Cans

Wehrli

0107 DURAMAX LB7/LLY/LBZ OEM PLACEMENT COOLANT TANK KIT CAT YELLOW

$474.33

SKU: W005 100645-CAT

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

Upgrade your 2001-2007 GM 2500/3500HD 6.6L Duramax LB7/LLY/LBZ with the Wehrli Custom Fabrication 100645-CAT Coolant Tank Kit. This kit replaces the flimsy factory plastic coolant reservoir with a robust, powder-coated aluminum tank designed for superior durability and longevity. It seamlessly drops into the stock location, requiring no modifications for installation. The kit features a billet black anodized cap for a sleek look, an integrated sight glass for effortless coolant level checks, and a low coolant sensor for added peace of mind. Engineered to withstand extreme heat, resist staining, and prevent cracking, this coolant tank kit is a reliable and stylish enhancement for your heavy-duty truck.
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0107 DURAMAX LB7/LLY/LBZ OEM PLACEMENT COOLANT TANK KIT CAT YELLOW

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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Available on iOS & Android

Specifications

BrandWehrli
Part NumberW005 100645-CAT

Videos

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A Cooling System Part That Will Add Style To Your Duramax

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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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Shipping

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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