Installation Time
(approx) 1 Hour
Difficulty Level:
Simple installation for anyone.
Installation Guides
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Mishimoto Full-Flow Transmission Thermal Bypass Valve Kit
(17-19 6.6L Duramax Silverado 2500 HD
Find parts that fit my vehicle Item HS19551
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features
- Direct Fit For 2017-2019 Chevrolet/GMC 6.6L Duramax L5P
- Installs In Less Than 1 Hour
- Durable CNC-Machined Billet Aluminum Design
- Includes Fully-Serviceable Thermostat For Fast Warm-Up In Cold Climates And Thermostat Bypass For Constant Cooling In Warm 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 Added Heat Dissipation
- Durable Anodized Finish
- Mishimoto Lifetime Warranty
- Fits 2017-2019 Chevrolet Silverado 2500 HD With 6.6L Duramax L5P Engine And Allison Automatic Transmission
Description
Enhanced Transmission Cooling. The Mishimoto Full-Flow Transmission Thermal Bypass Valve Kit improves transmission fluid cooling by replacing the internal thermostat with a fully-serviceable thermostat and a bypass option. This design allows for fast warm-up in cold climates and full flow to the transmission cooler in warm climates, helping prevent transmission overheating and extending the lifespan of your vehicle's transmission system.
Durable CNC Construction. Crafted from billet aluminum with precise CNC machining, this valve features integrated heat-sink fins for increased heat dissipation. It is finished with a black anodized coating, ensuring long-lasting corrosion resistance and a premium appearance.
Simple Installation. The kit installs easily with minimal effort and requires no drilling or modification to stock transmission cooler piping. Most users can complete installation in under an hour.
Lifetime Warranty. This product is backed by a comprehensive lifetime warranty covering the life of the vehicle.
Application. Specifically engineered to fit the 2017-2019 Chevrolet Silverado 2500 HD equipped with the 6.6L Duramax L5P engine and Allison automatic transmission. Not recommended for cold climates when the thermostat bypass is installed to avoid overcooling of the transmission fluid.
Mishimoto MMTC-L5P-TBVFF
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) Transmission Thermal Bypass Valve
- Instruction Manual
4.5
Customer Reviews (2)
Questions & Answers
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Will It Fit My Silverado 2500
- 6.6L V8 Duramax - 17, 18, 19
