Product Description
Interstate-McBee M-3864458 Filter Head Gasket – 03–07 5.9L Cummins
Direct-fit replacement gasket for the fuel filter head (fuel filter housing) on 2003–2007 Dodge Ram 2500/3500 with the 5.9L Cummins ISB. Helps restore proper sealing to prevent air intrusion and fuel leaks. Sold individually.
- OE-style fit: Matches the footprint and thickness of the factory seal.
- Reliable sealing: Designed for diesel fuel environments and under-hood temperatures.
- Service ready: Ideal when servicing the filter head, changing sensors, or fixing prime-loss issues.
- Value: Interstate-McBee quality at an aftermarket price.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3864458 |
| OEM Reference | Cummins 3864458 |
| System | Fuel – Filter Head / Housing |
| Material | Fuel-resistant gasket material |
| Sold As | Each (1 gasket) |
What’s Included
- (1) Filter head gasket, P/N M-3864458
Vehicle Fitment
Always verify by engine serial number (ESN) when possible.
- Dodge Ram 2500/3500 with 5.9L Cummins ISB (Common Rail, 24-valve)
- Model Years: 2003–2007
Recommended/Related Parts
- Fuel filter head seals & O-ring kits (as applicable)
- Fuel filter(s) for 5.9L Cummins (2003–2007)
- Fuel pressure sensor / water-in-fuel sensor (if servicing)
Install Notes
- Clean mating surfaces thoroughly; remove all old gasket material.
- Install gasket dry (no sealant) unless your service manual specifies otherwise.
- Tighten fasteners evenly to factory torque; avoid overtightening.
- Prime the fuel system and check for leaks after start-up.
FAQ
Will this fix hard-start or loss of prime issues?
It can if the cause is a leaking filter head seal allowing air into the system. Inspect quick-connects and sensor seals as well.
Can I reuse the old gasket?
No. Always replace once disturbed; reusing may lead to leaks and air intrusion.
Does this fit 2007.5+ 6.7L Cummins?
No. This listing is for the 5.9L Cummins (2003–2007) only.
