Wehrli 4in Down Pipe — Fits 04.5-07 Dodge 5.9L Cummins (High Mount S400)

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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.

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Wehrli 4-Inch Down Pipe for 04.5-07 Dodge 5.9L Cummins

Optimize your 2004.5-2007 Dodge Ram 5.9L Cummins' exhaust system with the Wehrli 4-inch Down Pipe, specifically designed for use with a High Mount S400 turbocharger and a 2nd Gen exhaust manifold. This down pipe is engineered to enhance exhaust flow, reduce backpressure, and contribute to improved overall performance for your Cummins engine.

Key Features and Benefits:

  • Increased Exhaust Flow: The larger 4-inch diameter allows for significantly improved exhaust gas expulsion compared to stock piping, reducing restriction.
  • Optimized for High Mount S400: Specifically designed to mate with High Mount S400 turbochargers and 2nd Gen manifolds, ensuring proper fitment and efficient flow path.
  • Durable Construction: Built with quality materials to withstand the high temperatures and pressures of a diesel exhaust system.
  • Performance Gains: By reducing exhaust restrictions, this down pipe can contribute to quicker turbo spool, lower Exhaust Gas Temperatures (EGTs), and potentially increase horsepower.
  • Direct Fitment: Engineered for a precise fit on 2004.5-2007 Dodge Ram 2500 and 3500 models with the 5.9L Cummins engine, facilitating installation.

This Wehrli down pipe is an excellent modification for Cummins owners looking to maximize the efficiency and performance of their turbocharger setup. It's a crucial component for those running larger aftermarket turbos and seeking to unleash the full potential of their 5.9L engine. Experience a noticeable improvement in throttle response and exhaust note.

Upgrade your Dodge Cummins exhaust with this high-performance down pipe from Wehrli. Get yours today at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2004-2007 Dodge Ram 2500 SLT
2004-2007 Dodge Ram 2500 ST
2005-2007 Dodge Ram 2500 Laramie
2006-2007 Dodge Ram 2500 Sport
2006-2007 Dodge Ram 2500 TRX4
2004-2007 Dodge Ram 3500 Laramie
2004-2007 Dodge Ram 3500 SLT
2006-2007 Dodge Ram 3500 Sport
2007 Dodge Ram 3500 TRX4

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 4-Inch Down Pipe for 04.5-07 Dodge 5.9L Cummins

Optimize your 2004.5-2007 Dodge Ram 5.9L Cummins' exhaust system with the Wehrli 4-inch Down Pipe, specifically designed for use with a High Mount S400 turbocharger and a 2nd Gen exhaust manifold. This down pipe is engineered to enhance exhaust flow, reduce backpressure, and contribute to improved overall performance for your Cummins engine.

Key Features and Benefits:

  • Increased Exhaust Flow: The larger 4-inch diameter allows for significantly improved exhaust gas expulsion compared to stock piping, reducing restriction.
  • Optimized for High Mount S400: Specifically designed to mate with High Mount S400 turbochargers and 2nd Gen manifolds, ensuring proper fitment and efficient flow path.
  • Durable Construction: Built with quality materials to withstand the high temperatures and pressures of a diesel exhaust system.
  • Performance Gains: By reducing exhaust restrictions, this down pipe can contribute to quicker turbo spool, lower Exhaust Gas Temperatures (EGTs), and potentially increase horsepower.
  • Direct Fitment: Engineered for a precise fit on 2004.5-2007 Dodge Ram 2500 and 3500 models with the 5.9L Cummins engine, facilitating installation.

This Wehrli down pipe is an excellent modification for Cummins owners looking to maximize the efficiency and performance of their turbocharger setup. It's a crucial component for those running larger aftermarket turbos and seeking to unleash the full potential of their 5.9L engine. Experience a noticeable improvement in throttle response and exhaust note.

Upgrade your Dodge Cummins exhaust with this high-performance down pipe from Wehrli. Get yours today at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2004-2007 Dodge Ram 2500 SLT
2004-2007 Dodge Ram 2500 ST
2005-2007 Dodge Ram 2500 Laramie
2006-2007 Dodge Ram 2500 Sport
2006-2007 Dodge Ram 2500 TRX4
2004-2007 Dodge Ram 3500 Laramie
2004-2007 Dodge Ram 3500 SLT
2006-2007 Dodge Ram 3500 Sport
2007 Dodge Ram 3500 TRX4

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 4-Inch Down Pipe for 04.5-07 Dodge 5.9L Cummins

Optimize your 2004.5-2007 Dodge Ram 5.9L Cummins' exhaust system with the Wehrli 4-inch Down Pipe, specifically designed for use with a High Mount S400 turbocharger and a 2nd Gen exhaust manifold. This down pipe is engineered to enhance exhaust flow, reduce backpressure, and contribute to improved overall performance for your Cummins engine.

Key Features and Benefits:

  • Increased Exhaust Flow: The larger 4-inch diameter allows for significantly improved exhaust gas expulsion compared to stock piping, reducing restriction.
  • Optimized for High Mount S400: Specifically designed to mate with High Mount S400 turbochargers and 2nd Gen manifolds, ensuring proper fitment and efficient flow path.
  • Durable Construction: Built with quality materials to withstand the high temperatures and pressures of a diesel exhaust system.
  • Performance Gains: By reducing exhaust restrictions, this down pipe can contribute to quicker turbo spool, lower Exhaust Gas Temperatures (EGTs), and potentially increase horsepower.
  • Direct Fitment: Engineered for a precise fit on 2004.5-2007 Dodge Ram 2500 and 3500 models with the 5.9L Cummins engine, facilitating installation.

This Wehrli down pipe is an excellent modification for Cummins owners looking to maximize the efficiency and performance of their turbocharger setup. It's a crucial component for those running larger aftermarket turbos and seeking to unleash the full potential of their 5.9L engine. Experience a noticeable improvement in throttle response and exhaust note.

Upgrade your Dodge Cummins exhaust with this high-performance down pipe from Wehrli. Get yours today at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2004-2007 Dodge Ram 2500 SLT
2004-2007 Dodge Ram 2500 ST
2005-2007 Dodge Ram 2500 Laramie
2006-2007 Dodge Ram 2500 Sport
2006-2007 Dodge Ram 2500 TRX4
2004-2007 Dodge Ram 3500 Laramie
2004-2007 Dodge Ram 3500 SLT
2006-2007 Dodge Ram 3500 Sport
2007 Dodge Ram 3500 TRX4

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