Product Description
Interstate-McBee M-3977063 Head Gasket – Standard Thickness – 1998.5–2002 5.9L Cummins 24-Valve (ISB)
Direct-fit standard (STD) thickness head gasket for the 1998.5–2002 Dodge Ram 2500/3500 equipped with the 5.9L Cummins 24-valve ISB. Built to OE-equivalent form, fit, and function for dependable sealing performance. Sold individually.
- OE-equivalent sealing: Engineered for stock replacement and routine head service.
- Correct application: Matches Cummins reference 3977063 for 24-valve ISB (’98.5–’02).
- Service-ready: Ideal for head refreshes, injector upgrades, or top-end reseals.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3977063 |
| OEM Reference | Cummins 3977063 |
| Thickness | Standard (STD) |
| Sold As | Each (1 head gasket) |
| Position | Cylinder head to engine block |
What’s Included
- (1) Head gasket, P/N M-3977063 (STD)
Vehicle Fitment
Always verify by engine serial number (ESN) and piston protrusion when applicable.
- Dodge Ram 2500/3500 – 5.9L Cummins ISB (24-valve)
- Model Years: 1998.5–2002
Recommended / Related Parts
- Head bolt set (replace torque-to-yield bolts) or head stud kit
- Intake and exhaust manifold gaskets
- Rocker box gasket / valve cover gasket set
- Thermostat housing gasket and coolant hoses (as needed)
- Full upper gasket set if performing a complete top-end refresh
Install Notes
- Measure piston protrusion and select gasket thickness per the service manual; this listing is for STD thickness.
- Check head and block flatness and surface finish; address any warpage before installation.
- Use new head bolts (TTY) or upgrade to studs; follow the factory torque sequence and specs.
- Clean, dry mating surfaces; avoid sealants unless explicitly specified by the manual.
- After assembly, perform cooling system bleed and verify no combustion gases in coolant.
Why Buy From CPP Diesel
- ESN-verified fitment support from diesel specialists
- Fast shipping, easy returns, competitive pricing
- Deep inventory of complementary ISB top-end components
FAQ
Does this fit my 24-valve 5.9L Cummins?
Yes—this gasket is for the 1998.5–2002 5.9L Cummins ISB (24-valve) used in Ram 2500/3500 trucks. Verify by ESN for best results.
Is this the correct thickness?
This listing is Standard (STD) thickness. Always measure piston protrusion and follow the Cummins service manual to confirm thickness selection.
Do I need new head bolts?
Yes—factory bolts are torque-to-yield and must be replaced. Many installers upgrade to head studs for added clamping force.
