Mishimoto Full-Flow Thermal Bypass Valve Kit | 17-19 L5P Duramax

Mishimoto Full-Flow Thermal Bypass Valve Kit (MMTC-L5P-TBVFF) fits 2017-2019 Chevrolet/GMC 6.6L Duramax L5P trucks. A dedicated Mishimoto cooling upgrade.

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$99.95

Out of stock
SKU MMTC-L5P-TBVFF

Description

The Mishimoto Full-Flow Thermal Bypass Valve Kit, part number MMTC-L5P-TBVFF, is a purpose-built cooling component engineered specifically for the 2017-2019 Chevrolet and GMC 6.6L Duramax L5P platform. Unlike a generic catch-all part, this kit is a full-flow thermal bypass valve designed to work within the L5P’s cooling circuit, giving Duramax owners a dedicated, brand-matched solution rather than a one-size-fits-all fix.

As part of Mishimoto’s Cooling lineup, this thermal bypass valve kit is built to support the flow demands of the L5P Duramax cooling system. Mishimoto has long focused on cooling solutions for trucks and performance vehicles, and this full-flow design reflects that same engineering approach applied to a specific, modern diesel platform. For owners searching for a Mishimoto cooling upgrade tailored precisely to their L5P Duramax, this kit fills that role directly, without requiring guesswork on fitment or compatibility.

Vehicle Applications

The Mishimoto MMTC-L5P-TBVFF Full-Flow Thermal Bypass Valve Kit is designed to fit Chevrolet and GMC trucks equipped with the 6.6L Duramax L5P engine from the 2017 through 2019 model years. This includes the corresponding Chevrolet and GMC heavy-duty truck lines built with the L5P Duramax during that production window, making it a targeted fitment rather than a universal cooling accessory.

Features

  • Full-flow thermal bypass valve design
  • Manufactured by Mishimoto, a brand focused on Cooling components
  • Engineered specifically for the 6.6L Duramax L5P engine
  • Fits 2017-2019 Chevrolet and GMC L5P Duramax trucks

Specifications

  • Brand: Mishimoto
  • Part Number: MMTC-L5P-TBVFF
  • Product Type: Cooling
  • Fitment: Chevrolet/GMC 6.6L Duramax L5P, 2017-2019

Frequently Asked Questions

What vehicles is the Mishimoto MMTC-L5P-TBVFF designed for?

This kit is designed to fit Chevrolet and GMC trucks equipped with the 6.6L Duramax L5P engine from the 2017 through 2019 model years.

What type of product is the Mishimoto MMTC-L5P-TBVFF?

It is a Full-Flow Thermal Bypass Valve Kit, part of Mishimoto’s Cooling product category.

What is the part number for this Mishimoto cooling kit?

The part number is MMTC-L5P-TBVFF.

Does this kit work with earlier or later Duramax model years?

According to the manufacturer, this kit is intended for the 2017-2019 Chevrolet/GMC 6.6L Duramax L5P, so fitment outside that range is not specified.

âš  WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.