Product Description
The Cummins 3920867 OEM Intake Valve is the factory-engineered intake valve used in the legendary 1989–1998 5.9L 12-Valve Cummins (6BT). Manufactured from high-strength alloy materials and machined to exact Cummins specifications, this intake valve provides superior sealing, flow stability, and longevity—far exceeding the performance of generic aftermarket valves. Whether refreshing a high-mileage cylinder head or performing a full 6BT engine build, genuine Cummins valvetrain parts ensure OE durability and dependability.
The 3920867 intake valve maintains correct stem diameter, face angles, and seat contact patterns, ensuring stable intake airflow and reliable combustion efficiency in towing, performance, and work-truck applications.
Fitment
- 1989–1993 Dodge D/W 250 & 350 with 5.9L 12-Valve Cummins
- 1994–1998 Dodge Ram 2500/3500 with 5.9L 12-Valve Cummins
- All automotive 5.9L 12V 6BT engines using OEM cylinder head configuration
- Also used in select industrial/off-highway 6BT engines (ESN verification recommended)
Cross-Reference (Cummins-Only)
Pair this intake valve with other genuine Cummins 12-Valve valvetrain components:
• Cummins 3904409 Valve Stem Guide – 51.75mm
• Cummins 3904408 Valve Stem Guide – 60.50mm
• Cummins 3910810 Exhaust Rocker Arm – 12-Valve
• Cummins 3937438 Rocker Lever Adjusting Screw – 12-Valve
FAQ
Is this the correct intake valve for all 12-Valve 5.9L engines?
Yes. The 3920867 intake valve fits all automotive 5.9L 12-Valve Cummins engines from 1989–1998 and many industrial 6BT applications.
Should I replace all intake valves at the same time?
For best performance and consistency, Cummins recommends replacing valves as a complete set during a top-end refresh or rebuild.
Do these intake valves require machining?
The valve seats must be inspected and machined as needed to maintain proper geometry and sealing. The valve itself is drop-in once the seat is correctly prepared.
Can I use these valves with upgraded valve springs?
Yes—genuine Cummins valves are compatible with most mild performance spring upgrades. Extreme racing setups may require performance valves.
Specifications for cummins 3920867
| Specification | Value |
|---|---|
| Brand | Cummins Genuine Parts |
| Part Number | 3920867 |
| Component | Intake Valve – 5.9L 12-Valve Cummins |
| UPC | Not Published |
| GTIN | Not Published |
| Cross Reference | Used across 6BT 12-Valve cylinder head assemblies |
| E-Codes | N/A |
| Shipping Weight | 0.20 lbs (approx.) |
| Package Dimensions | 6 x 1 x 1 in |
| Prop 65 Warning | Not Applicable |
