Product Description
DIAMOND EYE 220104 is a 4.0" aluminized-steel turbo downpipe with an HX40-style turbo outlet flange, engineered specifically for the 1989–1993 Dodge Ram 2500/3500 5.9L Cummins in 2WD (2x4) configurations. It replaces the restrictive factory section to improve flow and reduce backpressure for quicker spool and lower EGTs.
Note: This model is for 2WD trucks only and does not include an oxygen sensor bung by design.
Fitment Highlights
- Years/Models: 1989–1993 Dodge Ram 2500/3500, 5.9L 12-Valve Cummins
- Drivetrain: 2WD (2x4) only; all cab & bed lengths
- Turbo Outlet: HX40-style V-band flange
- Material: Aluminized steel; 4.0" diameter
- O2 Bung: Not included (weld-in bung can be added if required)
FAQ: WILL THIS FIT 4X4?
No. This downpipe is built for 2WD (2x4) trucks. For 4x4 applications, use the Diamond Eye 220105 listed below.
FAQ: WHAT TURBO FLANGE DOES IT USE?
It uses an HX40-style V-band outlet at the turbo. Verify your turbo housing before purchase.
FAQ: IS AN OXYGEN SENSOR BUNG INCLUDED?
No. The 220104 ships without an O2 bung. If your setup needs one, plan to add a weld-in bung.
Cross-Reference / Related Diamond Eye Items (CPP Diesel)
- For 4x4 trucks: DIAMOND EYE 220105 (4X4)
- Turbo-back system (aluminized, 2WD): DIAMOND EYE K4209A-RP
- Turbo-back system (stainless, 2WD): DIAMOND EYE K4209S-RP
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| Part Number | 220104 |
| UPC | 841963113419 |
| GTIN | 0841963113419 (UPC-A) |
| Material | Aluminized steel |
| Diameter | 4.0" |
| Turbo Flange | HX40-style V-band |
| Drivetrain | 2WD (2x4) only |
| Shipping Weight | ~10 lb |
| Package Dimensions | 53" x 13" x 9" |
| Prop 65 | WARNING: Cancer (e.g., arsenic). www.P65Warnings.ca.gov |
