Sale

Heating and Cooling Overflow Tanks and Catch Cans

Mishimoto

Mishimoto 01-07 Chevy/GMC 6.6L Duramax Degas Tank - Natural

$467.00 $424.95 Save $42.05

SKU: M00C MMRT-DMAX-01N

In Stock
In Stock
Ships by Aug 3
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: MMRT-DMAX-01N

Two decades of heat cycling plastic components, such as your factory degas tank, will undoubtedly make them brittle and discolored. If your factory plastic degas tank is leaking, you're sick of seeing that ugly yellow plastic, or want to go single big turbo and need more space, then look no further. The Mishimoto aluminum degas tank for 2001-2007 Chevy/GMC 6.6L Duramax (LB7/LLY/LBZ) solves all these problems.----Designed with durability, style, and clearance for big turbos in mind. The fully TIG-welded aluminum construction ensures this will be the last time you need to replace your degas tank, and will spruce up your engine bay in the process. We specifically designed this tank to fit with big single turbos without any trimming or worry about melting your tank. The available micro-wrinkle black powder coated finish is perfect for a clean, stealthy look

Features:

  • Direct fit for 2001-2007 Chevy/GMC 6.6L Duramax (LB7/LLY/LBZ)
  • Includes preinstalled fluid level sensor for direct plug-and-play
  • Fully TIG welded aluminum construction
  • Sight tube allows for quick and easy reading of coolant level
  • Internal baffles keep coolant near overflow port during aggressive driving, preventing air entry into coolant system
  • Available in natural or micro-wrinkle black powder-coated finish
  • Fits with stock cap
  • Mishimoto Lifetime Warranty

Engine coolant reservoir designed to store and regulate excess coolant for proper system operation. Durable construction resists heat and pressure, helping prevent leaks and maintain optimal temperature.

MIA's Description

The Mishimoto aluminum degas tank (MMRT-DMAX-01N) is a direct replacement for the factory plastic unit in 2001-2007 Chevy/GMC 6.6L Duramax (LB7/LLY/LBZ) engines. Constructed from fully TIG-welded aluminum, it offers enhanced durability and resistance to heat cycling compared to the stock plastic tank. It features integrated internal baffles to prevent air entry into the coolant system during aggressive driving, a sight glass for easy coolant level checks, and an included OEM-quality fluid level sensor for plug-and-play installation. This tank increases fluid capacity by 55% (0.65 gallons) and is designed to fit with big single turbos without trimming. It comes in a natural finish and is backed by Mishimoto's Lifetime Warranty.

Fitment

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Specifications

BrandMishimoto
Part NumberM00C MMRT-DMAX-01N

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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