Product Description
DIAMOND EYE 221043 is a 4.0" aluminized steel turbo downpipe kit engineered for the 1998.5–2002 Dodge Ram 2500/3500 5.9L 24-valve Cummins. Mandrel bends improve exhaust flow off the turbine for lower backpressure, quicker spool, and reduced EGTs. This Performance Series set is designed for HX40-style turbo outlets and includes the direct pipe and required clamp for a clean, leak-resistant connection.
Fitment Details
- Years/Models: 1998.5, 1999, 2000, 2001, 2002 Dodge Ram 2500/3500, 5.9L 24-valve Cummins (VP44)
- Turbo Interface: HX40-style 4.0" outlet (requires matching HX40 outlet on your turbo)
- Configuration: 4" downpipe, aluminized steel, Performance Series
Cross-Reference / Related Diamond Eye Parts (on cppdiesel.com)
- HX40 V-Band Clamp — VC400HX40
- Stainless 4" HX Downpipe (94–02) — 261001
- Tailpipe, First Section (94–Early ’07) — 221004
- Tailpipe, Second Section (94–2007.5) — 221005
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| Part Number (MPN) | 221043 |
| Series | Performance Series |
| Material | Aluminized steel |
| Tube Size | 4.0" (mandrel bent) |
| Interface | HX40-style 4.0" turbo outlet |
| UPC | 841963113709 |
| GTIN | 0841963113709 (UPC-A) |
| Shipping Method | Standard ground (oversize not typically required) |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
FAQ: WILL THIS FIT MY STOCK TURBO?
This set is for an HX40-style 4" outlet. If your turbo uses an HX35-style or different outlet, you’ll need the matching downpipe and clamp for that interface.
FAQ: WHAT ELSE DO I NEED?
We recommend pairing with the Diamond Eye VC400HX40 V-band clamp and the proper tailpipe sections such as 221004 and 221005 as your build requires.
FAQ: ALUMINIZED VS. STAINLESS?
Aluminized is cost-effective and durable for daily/tow rigs. Choose Diamond Eye stainless options like 261001 if you want maximum corrosion resistance.
