Wehrli 3in Y-Bridge Kit — Fits 2001-2004 Chevrolet/GMC 6.6L LB7 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.

Wehrli 3in Y-Bridge Kit for 2001-2004 Duramax LB7

Enhance the performance and reliability of your 6.6L LB7 Duramax engine with the Wehrli 3in Y-Bridge Kit. Designed for 2001-2004 Chevrolet Silverado/GMC Sierra 2500 HD/3500 models, this kit replaces the restrictive factory Y-bridge and intake horn with larger, smoother-flowing components, promoting improved airflow and power delivery.

Key Features and Benefits:

  • Improved Airflow: The larger 3-inch diameter Y-bridge and intake horn reduce restrictions, allowing the turbocharger to spool more efficiently and deliver more air to the cylinders.
  • Enhanced Performance: Experience noticeable gains in horsepower and torque, along with improved throttle response and reduced EGTs (Exhaust Gas Temperatures).
  • Durable Construction: Made from high-quality materials with a robust gloss black finish, designed to withstand the demands of a performance diesel engine.
  • Direct Fit Design: Engineered for a precise fit, ensuring straightforward installation onto your 2001-2004 LB7 Duramax.
  • LB7 Specific: Tailored specifically for the 6.6L LB7 Duramax engine, guaranteeing compatibility and optimal performance.

The Y-bridge and intake horn are critical components in the intake path of your Duramax engine. Upgrading these parts with the Wehrli 3in Y-Bridge Kit is a highly effective modification for any LB7 owner looking to increase performance and reliability. This kit helps your engine breathe easier, leading to better overall efficiency and power output. It's an essential upgrade for stock or modified LB7 Duramax engines.

Get your Wehrli Y-Bridge Kit today at 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 3in Y-Bridge Kit for 2001-2004 Duramax LB7

Enhance the performance and reliability of your 6.6L LB7 Duramax engine with the Wehrli 3in Y-Bridge Kit. Designed for 2001-2004 Chevrolet Silverado/GMC Sierra 2500 HD/3500 models, this kit replaces the restrictive factory Y-bridge and intake horn with larger, smoother-flowing components, promoting improved airflow and power delivery.

Key Features and Benefits:

  • Improved Airflow: The larger 3-inch diameter Y-bridge and intake horn reduce restrictions, allowing the turbocharger to spool more efficiently and deliver more air to the cylinders.
  • Enhanced Performance: Experience noticeable gains in horsepower and torque, along with improved throttle response and reduced EGTs (Exhaust Gas Temperatures).
  • Durable Construction: Made from high-quality materials with a robust gloss black finish, designed to withstand the demands of a performance diesel engine.
  • Direct Fit Design: Engineered for a precise fit, ensuring straightforward installation onto your 2001-2004 LB7 Duramax.
  • LB7 Specific: Tailored specifically for the 6.6L LB7 Duramax engine, guaranteeing compatibility and optimal performance.

The Y-bridge and intake horn are critical components in the intake path of your Duramax engine. Upgrading these parts with the Wehrli 3in Y-Bridge Kit is a highly effective modification for any LB7 owner looking to increase performance and reliability. This kit helps your engine breathe easier, leading to better overall efficiency and power output. It's an essential upgrade for stock or modified LB7 Duramax engines.

Get your Wehrli Y-Bridge Kit today at 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 3in Y-Bridge Kit for 2001-2004 Duramax LB7

Enhance the performance and reliability of your 6.6L LB7 Duramax engine with the Wehrli 3in Y-Bridge Kit. Designed for 2001-2004 Chevrolet Silverado/GMC Sierra 2500 HD/3500 models, this kit replaces the restrictive factory Y-bridge and intake horn with larger, smoother-flowing components, promoting improved airflow and power delivery.

Key Features and Benefits:

  • Improved Airflow: The larger 3-inch diameter Y-bridge and intake horn reduce restrictions, allowing the turbocharger to spool more efficiently and deliver more air to the cylinders.
  • Enhanced Performance: Experience noticeable gains in horsepower and torque, along with improved throttle response and reduced EGTs (Exhaust Gas Temperatures).
  • Durable Construction: Made from high-quality materials with a robust gloss black finish, designed to withstand the demands of a performance diesel engine.
  • Direct Fit Design: Engineered for a precise fit, ensuring straightforward installation onto your 2001-2004 LB7 Duramax.
  • LB7 Specific: Tailored specifically for the 6.6L LB7 Duramax engine, guaranteeing compatibility and optimal performance.

The Y-bridge and intake horn are critical components in the intake path of your Duramax engine. Upgrading these parts with the Wehrli 3in Y-Bridge Kit is a highly effective modification for any LB7 owner looking to increase performance and reliability. This kit helps your engine breathe easier, leading to better overall efficiency and power output. It's an essential upgrade for stock or modified LB7 Duramax engines.

Get your Wehrli Y-Bridge Kit today at 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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