Product Description
Interstate-McBee M-5303406 Valve Spring – 03–07 5.9L Cummins 24-Valve
OE-style replacement valve spring for the 2003–2007 Dodge Ram 2500/3500 with the 5.9L Cummins ISB (24-valve, common-rail). Designed to match factory seat and open characteristics for dependable street/tow performance. Sold individually.
- Direct replacement: Fits the factory retainer/keeper hardware.
- OE-equivalent performance: Maintains stock valvetrain dynamics and durability.
- Service friendly: Ideal for refreshes and stock rebuilds.
- Value: Interstate-McBee quality at an affordable price.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-5303406 |
| OEM Reference | Cummins 5303406 |
| Sold As | Each (1 spring) |
| Qty Required (24V) | 24 springs (one per valve) |
| Position | Valve spring (valvetrain) |
What’s Included
- (1) Valve spring, P/N M-5303406
Vehicle Fitment
Always verify by engine serial number (ESN) when possible.
- Dodge Ram 2500/3500 5.9L Cummins ISB (24-valve, common-rail)
- Model Years: 2003–2007
- Not for 1998.5–2002 24-valve VP44 engines or 2007.5+ 6.7L applications.
Recommended/Related Parts
- Valve keepers/locks (order as needed)
- Valve spring retainers
- Intake and exhaust valve kits
- Valve stem seals
- Pushrods and rocker components (inspect while serviced)
Install Notes
- Use a proper valve spring compressor; wear eye protection.
- Service one valve at a time; verify retainer/keeper seating.
- Confirm installed height and free length against specs in the Cummins service manual.
Why Buy From CPP Diesel
- ESN-verified fitment support from diesel specialists
- Fast shipping and easy returns
- Deep inventory of complementary Cummins valvetrain parts
FAQ
Will this spring fit my 2003–2007 5.9L Cummins?
Yes—this listing is for the common-rail 24-valve ISB (2003–2007). For edge cases, verify by ESN.
How many springs do I need?
Twenty-four. The 24-valve head uses one spring per valve.
Does this include retainers and keepers?
No. Springs are sold individually; retainers and keepers are available separately.
Is this suitable for high-RPM or big-turbo builds?
This is an OE-equivalent spring for stock use. Performance builds may require upgraded spring rates.
