Product Description
Cummins 3923077 — Studded Flange Cap Screw (Oil Cooler Housing Fastener)
MPN: 3923077 | Also Known As: studded flange cap screw, hex flange head cap screw | Use Case: Commonly used to secure the oil cooler housing on 5.9L 12V engines (sold individually)
Why This Part
- ✓ OE hardware designed for proper clamp load and alignment on critical assemblies.
- ✓ Direct-fit fastener for 5.9L 12V oil cooler housing service (see fitment).
- ✓ Hardened flange head resists loosening from heat and vibration.
- ✓ Sold individually—order the exact quantity your repair requires.
Quick Specs
| Type | Studded Flange Cap Screw (Hex Flange Head Cap Screw) |
|---|---|
| OE Part # | 3923077 |
| Typical Location | Oil cooler housing assembly (engine-side) |
| Qty Required | Varies by assembly; sold individually |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1994–1998 | Cummins 5.9L 12-Valve (B-Series) | Ram 2500/3500 |
Compatibility Notes: Also used across various Cummins applications; certain 1998.5–2002 24V or industrial engines may use this fastener in specific subassemblies—always verify by VIN/ESN and parts catalog before ordering.
Often Paired With
- Oil cooler housing & gaskets (5.9L 12V, year-specific)
- Thread locker & torque spec per Cummins service manual
- Fresh oil & filter after cooler/housing service
What’s In The Box
- (1) Genuine Cummins Studded Flange Cap Screw (3923077)
- Other hardware/gaskets sold separately.
Install Tips
- Clean threads and mating surfaces; chase threads if needed.
- Follow factory torque sequence and spec; apply thread locker if specified.
- Recheck torque after initial heat cycle when servicing cooler/housing.
FAQ
WILL THIS FIT MY 1994–1998 5.9L 12V RAM?Yes—this OE fastener is commonly used on the oil cooler housing assembly for 1994–1998 5.9L 12V applications. Verify by VIN/ESN and service manual.
HOW MANY DO I NEED?Quantity varies by subassembly. Check the exploded view in your Cummins parts catalog and order the exact count required. This item is sold individually.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3923077 hardware for proper fit and clamp load.
DOES THIS ALSO FIT OTHER CUMMINS ENGINES?Yes—3923077 appears in additional Cummins applications (including some ISC/ISL families). Always confirm by ESN/catalog before purchase.
WHAT ELSE SHOULD I REPLACE DURING OIL COOLER SERVICE?Use new gaskets/seals, inspect the cooler core, flush passages, and refill with fresh oil & filter. Follow torque specs and sequence.
