Product Description
Interstate-McBee M-3926700 Valve Spring – 1989–1998 5.9L Cummins 12-Valve
OE-style replacement valve spring for the 1989–1998 Dodge Ram 2500/3500 equipped with the 5.9L Cummins 12-valve (6BT). Built to OE form, fit, and function for consistent valve control and durability. Sold individually.
- Direct replacement: Matches OEM geometry and installed height for stock cam profiles.
- Reliable material & finish: Designed for longevity in daily-driven and work applications.
- Service friendly: Ideal for head refreshes, valve jobs, and top-end maintenance.
- Value: Interstate-McBee quality at a competitive price.
Specifications
| Brand | Interstate-McBee |
| Part Number | M-3926700 |
| OEM Reference | Cummins 3926700 |
| Sold As | Each (1 spring) |
| Qty Required (12V) | 12 springs (one per valve) |
| Position | Valve spring (valvetrain) |
What’s Included
- (1) Valve spring, P/N M-3926700
Vehicle Fitment
Always verify by engine serial number (ESN) when possible.
- Dodge Ram 2500/3500 5.9L Cummins (12-valve 6BT)
- Model Years: 1989–1998
- Additional B-Series applications (4B/6B) where Cummins 3926700 is specified (confirm by ESN).
Recommended/Related Parts
- Interstate-McBee M-3900299 Valve Spring Retainer
- Interstate-McBee M-3900250 Valve Keeper (Locks)
- Interstate-McBee M-3802355 Intake Valve Kit
- Interstate-McBee M-3802356 Exhaust Valve Kit
- Interstate-McBee M-3283335 Head Gasket (12-Valve)
Install Notes
- Use a quality valve spring compressor and wear eye protection.
- Service one valve at a time; keepers/locks can eject under spring tension.
- Verify installed height and retainer/keeper seating per the Cummins service manual.
- If reusing retainers/locks, inspect for wear or deformation; replace as needed.
Why Buy From CPP Diesel
- ESN-verified fitment support from diesel specialists
- Fast shipping, easy returns, competitive pricing
- Deep inventory of complementary B-series valvetrain parts
FAQ
Will these springs work with an aftermarket cam?
These are OE-style springs for stock cam profiles. For higher lift/seat pressure needs, contact us for a matched spring set.
How many springs do I need?
The 12-valve 5.9L uses 12 springs (one per valve). Springs are sold individually.
Do I need new retainers and locks?
Not always, but it’s recommended to inspect and replace worn retainers/locks. See the related parts above.
Does this fit 24-valve (1998.5–2002) engines?
No. This listing is for 12-valve engines only.
