Wehrli Billet Anodized Transmission Cooler Thermostat Bypass Plug — Fits 17-19 L5P Duramax

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Wehrli

Wehrli engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Wehrli lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Wehrli Billet Anodized Transmission Cooler Thermostat Bypass Plug for 17-19 L5P Duramax

Maintain precise control over your transmission's operating temperature with the Wehrli Billet Anodized Thermostat Bypass Plug. Specifically designed for 2017-2019 Chevrolet Silverado 2500 HD, 3500 HD, and GMC Sierra 2500 HD, 3500 HD models equipped with the 6.6L L5P Duramax engine, this plug ensures your transmission fluid reaches optimal operating temperatures quickly and efficiently.

Product Highlights:

  • Precision Fitment: Engineered for a perfect fit on 2017, 2018, and 2019 L5P Duramax trucks.
  • Billet Aluminum Construction: Machined from high-strength billet aluminum for superior durability and longevity.
  • Anodized Finish: Features a durable anodized finish for corrosion resistance and a premium look.
  • Optimized Warm-up: Allows the transmission fluid to reach its ideal operating temperature faster by bypassing the cooler during initial warm-up.
  • Prevents Overcooling: Helps prevent transmission overcooling in colder climates, ensuring consistent performance and protecting vital components.

This thermostat bypass plug is a crucial component for any L5P Duramax owner concerned with transmission health and performance, especially in varying temperature conditions. By allowing the transmission fluid to warm up more rapidly, it reduces wear and tear during the critical initial stages of operation. The robust billet construction ensures this part will last the lifetime of your vehicle.

Upgrade your L5P Duramax's transmission cooling system with this high-performance bypass plug. Experience improved reliability and consistent transmission temperatures. Find this essential part and other premium upgrades at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2015 Cadillac Escalade Base
2015 Cadillac Escalade Luxury
2015 Cadillac Escalade Platinum
2015 Cadillac Escalade Premium
2014-2018 Chevrolet Silverado 1500 LTZ
2014-2018 Chevrolet Silverado 1500 WT
2014-2018 Chevrolet Silverado 1500 High Country
2015-2018 Chevrolet Silverado 1500 SSV
2015-2018 Chevrolet Silverado 1500 LS
2016-2018 Chevrolet Silverado 1500 Custom
2017-2019 Chevrolet Silverado 2500 HD High Country
2017-2019 Chevrolet Silverado 2500 HD LT
2017-2019 Chevrolet Silverado 2500 HD WT
2017-2019 Chevrolet Silverado 3500 HD High Country
2017-2019 Chevrolet Silverado 3500 HD LT
2017-2019 Chevrolet Silverado 3500 HD LTZ
2017-2019 Chevrolet Silverado 3500 HD WT
2015-2016 Chevrolet Suburban LTZ
2015-2020 Chevrolet Suburban LS
2017-2020 Chevrolet Suburban Premier
2015-2016 Chevrolet Tahoe LTZ
2015-2020 Chevrolet Tahoe LS
2015-2020 Chevrolet Tahoe LT
2015-2020 Chevrolet Tahoe PPV
2017-2020 Chevrolet Tahoe Premier
2014-2018 GMC Sierra 1500 Base
2014-2018 GMC Sierra 1500 Denali
2014-2018 GMC Sierra 1500 SLE
2014-2018 GMC Sierra 1500 SLT
2017-2019 GMC Sierra 2500 HD Base
2017-2019 GMC Sierra 2500 HD Denali
2017-2019 GMC Sierra 2500 HD SLE
2017-2019 GMC Sierra 3500 HD Base
2017-2019 GMC Sierra 3500 HD Denali
2017-2019 GMC Sierra 3500 HD SLE
2017-2019 GMC Sierra 3500 HD SLT
2015-2020 GMC Yukon Denali
2015-2020 GMC Yukon SLE
2015-2020 GMC Yukon SLT
2015-2020 GMC Yukon XL SLT
2015-2020 GMC Yukon XL Denali

Product Details

Product Description
Part Numbers
Sizing & Fit

About Wehrli

Wehrli engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Wehrli lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Wehrli Billet Anodized Transmission Cooler Thermostat Bypass Plug for 17-19 L5P Duramax

Maintain precise control over your transmission's operating temperature with the Wehrli Billet Anodized Thermostat Bypass Plug. Specifically designed for 2017-2019 Chevrolet Silverado 2500 HD, 3500 HD, and GMC Sierra 2500 HD, 3500 HD models equipped with the 6.6L L5P Duramax engine, this plug ensures your transmission fluid reaches optimal operating temperatures quickly and efficiently.

Product Highlights:

  • Precision Fitment: Engineered for a perfect fit on 2017, 2018, and 2019 L5P Duramax trucks.
  • Billet Aluminum Construction: Machined from high-strength billet aluminum for superior durability and longevity.
  • Anodized Finish: Features a durable anodized finish for corrosion resistance and a premium look.
  • Optimized Warm-up: Allows the transmission fluid to reach its ideal operating temperature faster by bypassing the cooler during initial warm-up.
  • Prevents Overcooling: Helps prevent transmission overcooling in colder climates, ensuring consistent performance and protecting vital components.

This thermostat bypass plug is a crucial component for any L5P Duramax owner concerned with transmission health and performance, especially in varying temperature conditions. By allowing the transmission fluid to warm up more rapidly, it reduces wear and tear during the critical initial stages of operation. The robust billet construction ensures this part will last the lifetime of your vehicle.

Upgrade your L5P Duramax's transmission cooling system with this high-performance bypass plug. Experience improved reliability and consistent transmission temperatures. Find this essential part and other premium upgrades at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2015 Cadillac Escalade Base
2015 Cadillac Escalade Luxury
2015 Cadillac Escalade Platinum
2015 Cadillac Escalade Premium
2014-2018 Chevrolet Silverado 1500 LTZ
2014-2018 Chevrolet Silverado 1500 WT
2014-2018 Chevrolet Silverado 1500 High Country
2015-2018 Chevrolet Silverado 1500 SSV
2015-2018 Chevrolet Silverado 1500 LS
2016-2018 Chevrolet Silverado 1500 Custom
2017-2019 Chevrolet Silverado 2500 HD High Country
2017-2019 Chevrolet Silverado 2500 HD LT
2017-2019 Chevrolet Silverado 2500 HD WT
2017-2019 Chevrolet Silverado 3500 HD High Country
2017-2019 Chevrolet Silverado 3500 HD LT
2017-2019 Chevrolet Silverado 3500 HD LTZ
2017-2019 Chevrolet Silverado 3500 HD WT
2015-2016 Chevrolet Suburban LTZ
2015-2020 Chevrolet Suburban LS
2017-2020 Chevrolet Suburban Premier
2015-2016 Chevrolet Tahoe LTZ
2015-2020 Chevrolet Tahoe LS
2015-2020 Chevrolet Tahoe LT
2015-2020 Chevrolet Tahoe PPV
2017-2020 Chevrolet Tahoe Premier
2014-2018 GMC Sierra 1500 Base
2014-2018 GMC Sierra 1500 Denali
2014-2018 GMC Sierra 1500 SLE
2014-2018 GMC Sierra 1500 SLT
2017-2019 GMC Sierra 2500 HD Base
2017-2019 GMC Sierra 2500 HD Denali
2017-2019 GMC Sierra 2500 HD SLE
2017-2019 GMC Sierra 3500 HD Base
2017-2019 GMC Sierra 3500 HD Denali
2017-2019 GMC Sierra 3500 HD SLE
2017-2019 GMC Sierra 3500 HD SLT
2015-2020 GMC Yukon Denali
2015-2020 GMC Yukon SLE
2015-2020 GMC Yukon SLT
2015-2020 GMC Yukon XL SLT
2015-2020 GMC Yukon XL Denali

Product Details

Product Description

About Wehrli

Wehrli engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Wehrli lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Wehrli Billet Anodized Transmission Cooler Thermostat Bypass Plug for 17-19 L5P Duramax

Maintain precise control over your transmission's operating temperature with the Wehrli Billet Anodized Thermostat Bypass Plug. Specifically designed for 2017-2019 Chevrolet Silverado 2500 HD, 3500 HD, and GMC Sierra 2500 HD, 3500 HD models equipped with the 6.6L L5P Duramax engine, this plug ensures your transmission fluid reaches optimal operating temperatures quickly and efficiently.

Product Highlights:

  • Precision Fitment: Engineered for a perfect fit on 2017, 2018, and 2019 L5P Duramax trucks.
  • Billet Aluminum Construction: Machined from high-strength billet aluminum for superior durability and longevity.
  • Anodized Finish: Features a durable anodized finish for corrosion resistance and a premium look.
  • Optimized Warm-up: Allows the transmission fluid to reach its ideal operating temperature faster by bypassing the cooler during initial warm-up.
  • Prevents Overcooling: Helps prevent transmission overcooling in colder climates, ensuring consistent performance and protecting vital components.

This thermostat bypass plug is a crucial component for any L5P Duramax owner concerned with transmission health and performance, especially in varying temperature conditions. By allowing the transmission fluid to warm up more rapidly, it reduces wear and tear during the critical initial stages of operation. The robust billet construction ensures this part will last the lifetime of your vehicle.

Upgrade your L5P Duramax's transmission cooling system with this high-performance bypass plug. Experience improved reliability and consistent transmission temperatures. Find this essential part and other premium upgrades at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2015 Cadillac Escalade Base
2015 Cadillac Escalade Luxury
2015 Cadillac Escalade Platinum
2015 Cadillac Escalade Premium
2014-2018 Chevrolet Silverado 1500 LTZ
2014-2018 Chevrolet Silverado 1500 WT
2014-2018 Chevrolet Silverado 1500 High Country
2015-2018 Chevrolet Silverado 1500 SSV
2015-2018 Chevrolet Silverado 1500 LS
2016-2018 Chevrolet Silverado 1500 Custom
2017-2019 Chevrolet Silverado 2500 HD High Country
2017-2019 Chevrolet Silverado 2500 HD LT
2017-2019 Chevrolet Silverado 2500 HD WT
2017-2019 Chevrolet Silverado 3500 HD High Country
2017-2019 Chevrolet Silverado 3500 HD LT
2017-2019 Chevrolet Silverado 3500 HD LTZ
2017-2019 Chevrolet Silverado 3500 HD WT
2015-2016 Chevrolet Suburban LTZ
2015-2020 Chevrolet Suburban LS
2017-2020 Chevrolet Suburban Premier
2015-2016 Chevrolet Tahoe LTZ
2015-2020 Chevrolet Tahoe LS
2015-2020 Chevrolet Tahoe LT
2015-2020 Chevrolet Tahoe PPV
2017-2020 Chevrolet Tahoe Premier
2014-2018 GMC Sierra 1500 Base
2014-2018 GMC Sierra 1500 Denali
2014-2018 GMC Sierra 1500 SLE
2014-2018 GMC Sierra 1500 SLT
2017-2019 GMC Sierra 2500 HD Base
2017-2019 GMC Sierra 2500 HD Denali
2017-2019 GMC Sierra 2500 HD SLE
2017-2019 GMC Sierra 3500 HD Base
2017-2019 GMC Sierra 3500 HD Denali
2017-2019 GMC Sierra 3500 HD SLE
2017-2019 GMC Sierra 3500 HD SLT
2015-2020 GMC Yukon Denali
2015-2020 GMC Yukon SLE
2015-2020 GMC Yukon SLT
2015-2020 GMC Yukon XL SLT
2015-2020 GMC Yukon XL Denali

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