Wehrli 6.6L LB7 Duramax 2in Stainless Up Pipe Kit w/Gaskets - Single Turbo — Fits 2001-2004 Chevrolet/GMC Silverado/Sierra 2500HD/3500

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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.

Wehrli 2in Stainless Steel Up Pipe Kit for 2001-2004 Duramax LB7

Optimize your 2001-2004 Chevrolet Silverado and GMC Sierra 2500HD/3500's exhaust system with this high-performance 2-inch Stainless Steel Up Pipe Kit from Wehrli. Designed specifically for the 6.6L LB7 Duramax engine with a single turbo setup, this kit replaces the restrictive factory up-pipes, promoting improved exhaust flow and turbocharger spool.

Key Features:

  • Enhanced Exhaust Flow: The larger 2-inch diameter piping allows exhaust gases to exit the cylinders more efficiently, reducing backpressure and improving turbocharger response.
  • Durable Stainless Steel: Constructed from high-quality stainless steel, this kit is resistant to corrosion and cracking, ensuring long-term durability even under extreme conditions.
  • Includes Gaskets: Comes complete with all necessary gaskets for a complete and reliable installation.
  • Single Turbo Optimized: Specifically designed for LB7 engines equipped with a single turbocharger setup.
  • Direct Fit Design: Engineered for a precise fitment on 2001-2004 6.6L LB7 Duramax engines, simplifying the installation process.

Upgrading your up-pipes is a crucial step for any LB7 owner looking to enhance performance, improve turbocharger efficiency, and ensure the longevity of their exhaust system. This Wehrli kit provides a robust and effective solution for maximizing your Duramax's potential.

Improve your exhaust performance with this stainless steel up pipe kit from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2004 Chevrolet Silverado 2500 HD Base
2001-2004 Chevrolet Silverado 2500 HD LS
2001-2004 Chevrolet Silverado 2500 HD LT
2004 Chevrolet Silverado 2500 HD WT
2001-2004 Chevrolet Silverado 3500 Base
2001-2004 Chevrolet Silverado 3500 LS
2004 Chevrolet Silverado 3500 WT
2001-2002 GMC Sierra 2500 HD SL
2001-2004 GMC Sierra 2500 HD SLE
2001-2004 GMC Sierra 2500 HD SLT
2002-2004 GMC Sierra 2500 HD Base
2003-2004 GMC Sierra 2500 HD WT
2001-2004 GMC Sierra 3500 SLE
2001-2004 GMC Sierra 3500 SLT
2002-2004 GMC Sierra 3500 Base
2004 GMC Sierra 3500 WT

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.

Wehrli 2in Stainless Steel Up Pipe Kit for 2001-2004 Duramax LB7

Optimize your 2001-2004 Chevrolet Silverado and GMC Sierra 2500HD/3500's exhaust system with this high-performance 2-inch Stainless Steel Up Pipe Kit from Wehrli. Designed specifically for the 6.6L LB7 Duramax engine with a single turbo setup, this kit replaces the restrictive factory up-pipes, promoting improved exhaust flow and turbocharger spool.

Key Features:

  • Enhanced Exhaust Flow: The larger 2-inch diameter piping allows exhaust gases to exit the cylinders more efficiently, reducing backpressure and improving turbocharger response.
  • Durable Stainless Steel: Constructed from high-quality stainless steel, this kit is resistant to corrosion and cracking, ensuring long-term durability even under extreme conditions.
  • Includes Gaskets: Comes complete with all necessary gaskets for a complete and reliable installation.
  • Single Turbo Optimized: Specifically designed for LB7 engines equipped with a single turbocharger setup.
  • Direct Fit Design: Engineered for a precise fitment on 2001-2004 6.6L LB7 Duramax engines, simplifying the installation process.

Upgrading your up-pipes is a crucial step for any LB7 owner looking to enhance performance, improve turbocharger efficiency, and ensure the longevity of their exhaust system. This Wehrli kit provides a robust and effective solution for maximizing your Duramax's potential.

Improve your exhaust performance with this stainless steel up pipe kit from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2004 Chevrolet Silverado 2500 HD Base
2001-2004 Chevrolet Silverado 2500 HD LS
2001-2004 Chevrolet Silverado 2500 HD LT
2004 Chevrolet Silverado 2500 HD WT
2001-2004 Chevrolet Silverado 3500 Base
2001-2004 Chevrolet Silverado 3500 LS
2004 Chevrolet Silverado 3500 WT
2001-2002 GMC Sierra 2500 HD SL
2001-2004 GMC Sierra 2500 HD SLE
2001-2004 GMC Sierra 2500 HD SLT
2002-2004 GMC Sierra 2500 HD Base
2003-2004 GMC Sierra 2500 HD WT
2001-2004 GMC Sierra 3500 SLE
2001-2004 GMC Sierra 3500 SLT
2002-2004 GMC Sierra 3500 Base
2004 GMC Sierra 3500 WT

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.

Wehrli 2in Stainless Steel Up Pipe Kit for 2001-2004 Duramax LB7

Optimize your 2001-2004 Chevrolet Silverado and GMC Sierra 2500HD/3500's exhaust system with this high-performance 2-inch Stainless Steel Up Pipe Kit from Wehrli. Designed specifically for the 6.6L LB7 Duramax engine with a single turbo setup, this kit replaces the restrictive factory up-pipes, promoting improved exhaust flow and turbocharger spool.

Key Features:

  • Enhanced Exhaust Flow: The larger 2-inch diameter piping allows exhaust gases to exit the cylinders more efficiently, reducing backpressure and improving turbocharger response.
  • Durable Stainless Steel: Constructed from high-quality stainless steel, this kit is resistant to corrosion and cracking, ensuring long-term durability even under extreme conditions.
  • Includes Gaskets: Comes complete with all necessary gaskets for a complete and reliable installation.
  • Single Turbo Optimized: Specifically designed for LB7 engines equipped with a single turbocharger setup.
  • Direct Fit Design: Engineered for a precise fitment on 2001-2004 6.6L LB7 Duramax engines, simplifying the installation process.

Upgrading your up-pipes is a crucial step for any LB7 owner looking to enhance performance, improve turbocharger efficiency, and ensure the longevity of their exhaust system. This Wehrli kit provides a robust and effective solution for maximizing your Duramax's potential.

Improve your exhaust performance with this stainless steel up pipe kit from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2004 Chevrolet Silverado 2500 HD Base
2001-2004 Chevrolet Silverado 2500 HD LS
2001-2004 Chevrolet Silverado 2500 HD LT
2004 Chevrolet Silverado 2500 HD WT
2001-2004 Chevrolet Silverado 3500 Base
2001-2004 Chevrolet Silverado 3500 LS
2004 Chevrolet Silverado 3500 WT
2001-2002 GMC Sierra 2500 HD SL
2001-2004 GMC Sierra 2500 HD SLE
2001-2004 GMC Sierra 2500 HD SLT
2002-2004 GMC Sierra 2500 HD Base
2003-2004 GMC Sierra 2500 HD WT
2001-2004 GMC Sierra 3500 SLE
2001-2004 GMC Sierra 3500 SLT
2002-2004 GMC Sierra 3500 Base
2004 GMC Sierra 3500 WT

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