Product Description
CUMMINS 3802356 OEM EXHAUST VALVE – RAM 5.9L 12-VALVE (1989–1998) | 4BT / 6BT B-SERIES
The genuine CUMMINS 3802356 OEM exhaust valve is the factory-correct replacement for the legendary 5.9L 12-valve Cummins (1989–1998) as well as 4BT and 6BT B-series industrial and commercial engines. Exhaust valves endure extreme heat, pressure, and constant duty cycles. When worn or burned, they lead to compression loss, misfires, low power, poor turbo efficiency, and starting issues. Installing a true OEM Cummins valve restores factory sealing, combustion integrity, and long-term reliability.
Manufactured using Cummins’ precise metallurgy, heat treatment, and valve face geometry, the 3802356 valve is engineered specifically for the 12-valve mechanical B-series platform. Whether you’re refreshing a high-mileage 5.9L, rebuilding a 4BT for a swap, or overhauling a 6BT industrial engine, this OEM valve is the only choice for guaranteed fitment and durability.
Key Features
- Genuine Cummins OEM exhaust valve – exact dimensions and metallurgy.
- Direct-fit for 1989–1998 5.9L 12-valve Ram trucks.
- Compatible with 4BT and 6BT B-series engines in on-road and industrial applications.
- Restores proper combustion sealing and exhaust flow.
- High heat resistance for turbocharged diesel environments.
Fitment Details
- Engine Families: Cummins 5.9L 12-Valve (6BT), 4BT 3.9L, 6BT B-series
- Ram Applications: 1989–1998 Dodge Ram 2500 & 3500 with 5.9L Cummins
- Industrial/Commercial: 4BT / 6BT B-series engines used in industrial, agricultural, and commercial platforms
- Notes: Always confirm valve stem size and head specs by VIN/ESN.
Cross-Reference & Companion Cummins Parts
CPP Diesel carries additional Cummins valvetrain items that pair with the 3802356 exhaust valve:
- CUMMINS 4981790 VALVE STEM SEAL – 5.9L / 6.7L
- CUMMINS 3944083 VALVE LOCK – 5.9L / 6.7L
- VIEW MORE GENUINE CUMMINS OEM PARTS
Common cross-reference numbers: 3802356, 3802356-00, 3802356X (reman)—verify by VIN/ESN.
Installation Notes
- Inspect valve seat condition; lapping or seat cutting may be required.
- Always replace valve stem seals; see CUMMINS 4981790.
- Check guide clearance on high-mileage cylinder heads.
- Re-torque rocker assemblies per Cummins specifications.
- A machine shop evaluation is recommended during full rebuilds.
Specifications for cummins 3802356
| Attribute | Value |
|---|---|
| Brand | Cummins (Genuine OEM) |
| Cummins Part Number | 3802356 |
| Alternate / Related Part Numbers | 3802356X (reman), 3802356-00 |
| Function | Exhaust valve – 4BT/6BT/5.9L 12-valve Cummins |
| Engine Compatibility | 5.9L 12V Cummins (1989–1998), 4BT, 6BT B-series |
| Vehicle Fitment | 1989–1998 Ram 2500/3500 (5.9L 12-valve) |
| UPC | 190910287434 |
| GTIN | 190910287434 |
| Shipping Weight | Approx. 0.20 lbs |
| Shipping Method | Standard ground; expedited options available |
| E-Codes / Emissions | Non-emissions-critical valvetrain part |
| Prop 65 Warning | WARNING: May expose you to chemicals known to the State of California to cause cancer and reproductive harm. See www.P65Warnings.ca.gov. |
| Country of Origin | As labeled by Cummins (varies by production batch) |
Frequently Asked Questions
WILL THIS FIT MY 5.9L 12-VALVE CUMMINS?
Yes. CUMMINS 3802356 is the correct OEM exhaust valve for 1989–1998 12-valve engines. Always verify by VIN/ESN.
DOES THIS VALVE FIT 4BT AND 6BT INDUSTRIAL ENGINES?
Yes—this exhaust valve is widely used across 4BT and 6BT B-series engines in industrial, agricultural, and commercial applications.
WHAT OTHER PARTS SHOULD BE REPLACED DURING A VALVE SERVICE?
We recommend replacing valve stem seals and valve locks at minimum.
IS THIS A GENUINE CUMMINS PART?
Yes—CPP Diesel supplies only authentic Cummins OEM components.
