Product Description
CUMMINS 3934303 OEM ENGINE OIL FILTER HOUSING (OIL FILTER HEAD) – RAM 5.9L (1998.5–2002)
The genuine CUMMINS 3934303 OEM engine oil filter housing is the exact replacement oil filter head used on 1998.5–2002 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L 24-valve Cummins. This factory-engineered assembly provides the correct routing of engine oil pressure, filtration flow, and oil sensor porting—critical to protecting your 5.9L from premature wear, lubrication loss, and contamination. If your existing filter head is cracked, leaking, or stripped where the filter threads mount, replacing it with a real Cummins OEM part ensures reliability and proper oil pressure readings.
Designed to meet exact Cummins specifications, this oil filter head integrates seamlessly with the OE oil cooler, sealing surfaces, oil filter standpipe, and pressure sensor. It also serves as a mounting location for several critical lubrication components. Pair with the correct oil filter, gaskets, and pressure sensor to complete a full front-end engine lubrication refresh.
Key Features
- Genuine Cummins OEM filter housing – not aftermarket or reproduction.
- Restores proper oil filtration flow and lubrication circuit integrity.
- Direct-fit replacement for 1998.5–2002 Ram 5.9L 24-valve engines.
- Correct porting for oil pressure sensors and factory-style oil cooler connections.
- High-strength casting engineered for vibration, heat, and long-term durability.
Fitment Details
- Engine: 5.9L Cummins 24-Valve (ISB)
- Years: 1998.5–2002
- Applications: Dodge Ram 2500 & 3500 (24-valve models only)
- Notes: Verify fitment by VIN/ESN due to mid-year changes in 1998.5.
Cross-Reference & Companion Cummins Parts
For a complete repair, pair CUMMINS 3934303 with other genuine Cummins components available at CPP Diesel:
- CUMMINS 3949354 OIL PRESSURE SENSOR – threads into the filter head for accurate pressure readings.
- CUMMINS 3951609 OIL FILTER STANDPIPE – mounts directly in the filter head to secure the oil filter.
- CUMMINS 3929792 OIL FILTER GASKET – ensures a proper seal when reinstalling the filter housing.
- VIEW ALL GENUINE CUMMINS OEM PARTS
Common Cummins cross-reference numbers: 3934303, 3942915, 3942916 (verify by VIN/ESN).
Installation Notes
- Clean all mating surfaces before installation.
- Verify oil cooler sealing rings and standpipe condition.
- Torque fasteners to Cummins specifications.
- Prime the lubrication system before first engine start after servicing.
Specifications for cummins 3934303
| Attribute | Value |
|---|---|
| Brand | Cummins (Genuine OEM) |
| Cummins Part Number | 3934303 |
| Alternate Part Numbers | 3942915, 3942916 (verify by VIN/ESN) |
| Function | Engine oil filter housing / oil filter head assembly |
| Engine Compatibility | 5.9L Cummins ISB 24-Valve (1998.5–2002) |
| Vehicle Fitment | Dodge Ram 2500 / 3500 (24-valve models only) |
| UPC | 190910284908 |
| GTIN | 190910284908 |
| Shipping Weight | Approx. 4.2 lbs |
| Shipping Method | Standard ground; expedited available |
| E-Codes / Emissions | Non-emissions critical; lubricating system component |
| 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 batch) |
Frequently Asked Questions
WILL THIS FIT MY 1998.5–2002 24-VALVE CUMMINS?
Yes—CUMMINS 3934303 is used on most 24-valve 5.9L ISB engines from 1998.5–2002. Because 1998.5 was a split year, always verify with your VIN/ESN.
WHAT SENSORS THREAD INTO THIS FILTER HOUSING?
Most commonly the CUMMINS 3949354 oil pressure sensor. Check your engine’s exact configuration for additional ports.
DO I NEED A NEW STANDPIPE WHEN INSTALLING A NEW FILTER HEAD?
It is recommended, especially if the original CUMMINS 3951609 standpipe shows wear or thread damage.
SHOULD I REPLACE THE GASKET OR SEALS?
Yes. Always replace sealing components such as the CUMMINS 3929792 oil filter gasket to prevent leaks.
IS THIS A GENUINE CUMMINS PART?
Yes—CPP Diesel sources only authentic Cummins OEM components for complete reliability.
