Product Description
CPP 48639 HX35/HX40 4 Inch Outlet and Downpipe Kit for 1994-2002 Dodge Ram 5.9L Cummins
The CPP 48639 HX35/HX40 4 Inch Outlet and Downpipe Kit is built for 1994-2002 Dodge Ram 2500/3500 trucks equipped with the 5.9L Cummins engine using an HX35 or HX40 style turbocharger with a 5-bolt outlet flange. This kit helps remove one of the most restrictive areas in the factory exhaust path by upgrading the turbo outlet and downpipe connection to a larger 4 inch setup.
Designed for second-gen Cummins owners looking for better exhaust flow, lower drive pressure, improved spool characteristics, and cleaner turbo outlet routing, this CPP Diesel kit is a smart upgrade for trucks running stock-style HX35/HX40 turbos or compatible performance turbo setups.
Key Features
- Fits HX35 and HX40 turbochargers with 5-bolt outlet flange
- 4 inch outlet design for improved exhaust flow
- Helps reduce factory outlet and downpipe restriction
- Great upgrade for 1994-2002 Dodge Ram 5.9L Cummins trucks
- Ideal for street, towing, and performance diesel applications
- Compatible with HX40-style v-band exhaust connections
Fitment
- 1994-2002 Dodge Ram 2500 with 5.9L Cummins diesel
- 1994-2002 Dodge Ram 3500 with 5.9L Cummins diesel
- Designed for HX35/HX40 turbochargers with a 5-bolt outlet flange
Fitment Note: Always verify turbo outlet style before ordering. This kit is intended for HX35/HX40 style turbochargers using the correct 5-bolt outlet configuration.
Cross-Reference / Recommended CPP Diesel Parts
- CPP 3923178 HX35 / HX40 / S300 Compressor Outlet Elbow
- CPP HX35/HX40/S300 Compressor Outlet Flange O-Ring
- CPP 3575169 HX35/HX40 Turbocharger Rebuild Kit
- CPP HX35 Turbocharger Exhaust Outlet Clamp
- CPP HX35 Turbocharger for 1994-2002 Dodge Cummins
Specifications for CPP 48639
| Brand | CPP Diesel |
| Part Number | 48639 |
| Product Type | Turbo Outlet and Downpipe Kit |
| Outlet Size | 4 Inch |
| Turbo Compatibility | HX35 / HX40 with 5-Bolt Outlet Flange |
| Vehicle Fitment | 1994-2002 Dodge Ram 2500/3500 5.9L Cummins |
| Availability | This product takes longer to ship at times due to flange availability |
FAQ
Will this fit my 1994-2002 Dodge Ram 5.9L Cummins?
Yes, this kit is designed for 1994-2002 Dodge Ram 2500/3500 trucks with the 5.9L Cummins engine using a compatible HX35 or HX40 turbocharger outlet.
What turbo outlet style does this kit require?
This kit is intended for HX35/HX40 turbochargers with a 5-bolt outlet flange. Verify your turbo before ordering.
Why upgrade to a 4 inch outlet and downpipe?
A larger 4 inch outlet and downpipe helps reduce exhaust restriction after the turbo, supporting better flow and improved performance potential.
Is this a good upgrade for towing or street performance?
Yes. Reducing restriction at the turbo outlet is beneficial for many towing, daily-driven, and performance-focused second-gen Cummins builds.
Does this work with every aftermarket turbo?
No. This kit is for HX35/HX40 style turbos with the correct 5-bolt outlet configuration. Custom or non-standard turbo setups may require different parts.
