Product Description
CUMMINS 3908082 OEM INTAKE MANIFOLD COVER – 3.9L 4BT (1989–1998)
The genuine CUMMINS 3908082 intake manifold cover is the factory-engineered replacement used on 3.9L 4BT engines across automotive, industrial, agricultural, and commercial applications from 1989–1998. This heavy-duty cover seals the top of the intake manifold, ensuring proper airflow distribution and preventing unmetered air leaks that can lead to poor performance, rough operation, or efficiency loss.
Unlike aftermarket stamped or generic plates, the OEM Cummins intake cover provides correct thickness, rigidity, and sealing surface geometry for long-term reliability under vibration, boost pressure, and thermal expansion. Whether you’re rebuilding a 4BT swap, maintaining a fleet, or refreshing an industrial power unit, this OEM component guarantees factory-level precision and dependable service life.
Key Features
- Genuine Cummins OEM construction—not aftermarket or reproduction.
- Direct-fit for 3.9L 4BT engines across all major applications (1989–1998).
- Prevents intake leaks that cause loss of power and poor fuel efficiency.
- High-strength sealing surface supports boosted and high-vibration environments.
- Ideal for rebuilds, swaps, and restorations of 4BT-powered equipment and vehicles.
Fitment Details
- Engine: Cummins 3.9L 4BT (all variants)
- Years: 1989–1998
- Applications: Automotive conversions, step vans, skid steers, generators, industrial equipment, commercial platforms
- Notes: Always verify fitment via engine serial number (ESN) for industrial units.
Cross-Reference & Companion Cummins Parts
CPP Diesel carries a full catalog of genuine Cummins components for the 3.9L 4BT platform. Explore compatible OEM gaskets, hardware, breather housings, and intake system components here:
Common cross-reference identifiers: 3908082, 3908082NX (reman classification), 3908081 (related manifold components – verify via ESN).
Installation Notes
- Clean all mating surfaces thoroughly before installation.
- Always replace the intake cover gasket to ensure proper sealing.
- Verify torque pattern and fastener torque per Cummins specifications.
- Inspect intake manifold for warping or erosion on high-hour engines.
Specifications for cummins 3908082
| Attribute | Value |
|---|---|
| Brand | Cummins (Genuine OEM) |
| Cummins Part Number | 3908082 |
| Alternate Part Numbers | 3908082NX (reman), 3908081 (related components – verify) |
| Function | Intake manifold cover / intake plate |
| Engine Compatibility | 3.9L 4BT (1989–1998) |
| Vehicle/Equipment Fitment | Automotive swaps, industrial machinery, commercial vehicles, generators |
| UPC | 190910274595 |
| GTIN | 190910274595 |
| Shipping Weight | Approx. 1.2 lbs |
| Shipping Method | Standard ground; expedited options available |
| E-Codes / Emissions | Not emissions-critical; mechanical sealing component |
| Prop 65 Warning | WARNING: May expose you to chemicals known to the State of California to cause cancer. See www.P65Warnings.ca.gov. |
| Country of Origin | As labeled by Cummins (varies by lot) |
Frequently Asked Questions
WILL THIS INTAKE COVER FIT MY 3.9L 4BT?
Yes. The CUMMINS 3908082 intake manifold cover fits most 4BT engines from 1989–1998. For industrial equipment, verify using your engine serial number (ESN).
DOES THIS INCLUDE THE GASKET?
No. The intake cover gasket is sold separately. Always replace the gasket when installing a new cover.
IS THIS A GENUINE CUMMINS PART?
Yes — CPP Diesel supplies only authentic Cummins OEM components for maximum reliability.
CAN THIS BE USED IN 4BT AUTOMOTIVE SWAPS?
Absolutely. This OE intake cover is commonly used in Jeep, SUV, rat rod, and light-truck 4BT conversions.
