Product Description
Interstate-McBee M-3941253 Pushrod — 1998.5–2018 5.9L / 6.7L Cummins ISB (Aftermarket Replacement)
Direct-fit pushrod for 24-valve Cummins ISB applications. Built to OE form, fit, and function for dependable valvetrain performance. Sold individually.
- OE-style construction: Meets OE geometry and stiffness for stable valve motion.
- Drop-in replacement: Installs in the factory location with no modifications.
- Service-friendly: Ideal for stock refreshes or replacing bent/worn pushrods.
- Value: Interstate-McBee quality at an aftermarket price.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3941253 |
| OEM Reference | Cummins 3941253 |
| Sold As | Each (1 pushrod) |
| Qty Required (per engine) | 12 pushrods |
| Position | Valvetrain → Pushrod |
What’s Included
- (1) Pushrod, P/N M-3941253
Vehicle Fitment
Always verify by engine serial number (ESN) when possible.
- Cummins ISB 24-valve:
- 5.9L ISB (24V): 1998.5–2007 model-year applications
- 6.7L ISB (24V): 2007.5–2018 model-year applications
- Other ISB/medium-duty applications specifying Cummins 3941253 (confirm by ESN).
Recommended/Related Parts
- Valve lifters (tappets)
- Rocker arms / bridges
- Injector cam followers (as applicable)
- Head gasket & top-end set
- Valve stem seals
Install Notes
- Inspect old parts for wear; replace any bent or pitted pushrods.
- Keep pushrods oriented correctly; ensure each seats in its lifter and rocker pocket.
- Torque rocker components to factory spec and set valve lash per the service manual.
- Rotate engine by hand and re-check lash after the first heat cycle.
Why Buy From CPP Diesel
- ESN-verified fitment support from diesel specialists
- Fast shipping, easy returns, and competitive pricing
- Deep inventory of complementary ISB valvetrain parts
FAQ
Will this fit my 24-valve 5.9L or 6.7L Cummins?
Yes—this pushrod is intended for ISB 24-valve engines used from 1998.5 through 2018, when Cummins 3941253 is specified. Verify by ESN for certainty.
How many do I need?
Each engine uses 12 pushrods. This listing is for a single (1) pushrod.
Does this fit 12-valve (1989–1998) engines?
No. This part is for 24-valve ISB engines only.
