Installation Time
(approx) 1 Hour
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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Mishimoto Transmission Thermal Bypass Valve Kit
(17-19 6.6L Duramax Silverado 2500 HD
Find parts that fit my vehicle Item HS19566
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features
- Installs In Less Than 1 Hour With No Drilling Or Modification Required
- Durable CNC-Machined Billet Aluminum Construction With Anodized Finish
- Includes Fully-Serviceable Thermostat For Fast Warm-Up In Cold Climates And Thermostat Bypass For Constant Cooling In Hot Climates
- Helps Extend Transmission Life And Prevent Overheating
- Fits With Stock Transmission Cooler Piping, Requiring No Modification For Installation
- Integrated Heat-Sink Fins Provide Unique Styling And Enhanced Heat Dissipation
- Mishimoto Lifetime Warranty
- Compatible With 2017-2019 Chevrolet/GMC 6.6L Duramax Silverado & Sierra 2500HD and 3500HD Models
- Fits 17-19 6.6L Duramax Silverado 2500 HD
Description
Transmission Cooling Upgrade. The Mishimoto Transmission Thermal Bypass Valve Kit improves the cooling efficiency of the Allison transmission by managing the flow of transmission fluid to the cooler. It prevents fluid flow until the transmission reaches optimal operating temperature, helping to avoid premature wear and overheating. This product is essential for maintaining transmission longevity under demanding driving or towing conditions.
Construction and Appearance. Crafted from CNC-machined billet aluminum, the valve features an anodized finish for enhanced durability and corrosion resistance. Integrated heat-sink fins contribute to effective heat dissipation and add a functional aesthetic upgrade over the stock unit.
Installation. Installation is straightforward and can be completed in less than one hour with no drilling or modification required. The valve fits directly onto stock transmission cooler piping, making the process hassle-free for most users.
Warranty. This product is backed by a lifetime warranty, providing assurance of its quality and durability.
Application. Designed specifically for the 2017-2019 Chevrolet/GMC 6.6L Duramax Silverado 2500 HD, this thermal bypass valve is compatible only with vehicles equipped with the Allison automatic transmission. Use of the thermostat bypass in cold climates is not recommended to prevent overcooling of transmission fluid.
Mishimoto MMTC-L5P-TBV
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Install Details & What's in the Box
Installation Info
What's in the Box
- (1) CNC-Machined Billet Aluminum Thermal Bypass Valve
- (1) Removable Thermostat
- (2) Quick-Disconnect Transmission Line Fittings
- (1) Transmission Line Mounting Plate
- (1) Transmission Line Mounting Plate Bolt
- (1) Removable Thermostat Bypass w/ Installation Hardware
- (1) Assembly Notecard
5.0
Customer Reviews (1)
Questions & Answers
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Will It Fit My Silverado 2500
- 6.6L V8 Duramax - 17, 18, 19
