Product Description
Interstate-McBee M-3926700 Valve Spring – 89–98 5.9L Cummins 12V
OEM-style valve spring engineered by Interstate-McBee for the 1989–1998 5.9L Cummins 12-valve (6BT) found in Dodge Ram 2500/3500 trucks. Built to OEM dimensions and metallurgy to maintain precise valve control and durability in stock and daily-driven applications.
- Direct OEM-equivalent fit: Matches Cummins reference 3926700 for B-Series engines.
- Consistent performance: Heat-treated spring steel for reliable seat/open pressures and valve control.
- Aftermarket value: Quality Interstate-McBee replacement at a fraction of OEM-boxed pricing.
- Sold individually: Order the quantity needed for your service (typically 12 for a complete set).
Specifications
| Brand / Part No. | Interstate-McBee M-3926700 |
|---|---|
| OEM Reference | Cummins 3926700 |
| Common Alt. / Cross-Ref | 3900276 (select listings) |
| Engine Family | Cummins B-Series 5.9L (12-valve) |
| Position | Valve Spring (intake/exhaust usage varies by ESN/build) |
| Units | Sold individually |
Vehicle Fitment
Always verify by engine serial number (ESN) for exact usage.
- Dodge Ram 2500/3500 – 5.9L Cummins 12-Valve (6BT)
- 1989–1993 VE-pump
- 1994–1998 P7100 (P-pump)
Installation Notes
- Inspect retainers and locks; replace worn components. (Many builders replace springs in complete sets.)
- Measure installed height and follow the Cummins service manual for all specifications.
- Keepers/retainers must seat fully; verify free spring movement after assembly.
Warranty
Interstate-McBee new engine parts typically carry up to 24 months’ coverage; however, valve train components are covered for 12 months from installation. Contact us for details.
Cross-Reference & Compatibility
Intended for B-Series 5.9L 12V applications referencing Cummins 3926700. Alternate number 3900276 appears on some aftermarket catalogs; verify by ESN before ordering.
Why Buy From CPP Diesel
- Diesel-specialist fitment help with ESN verification.
- Fast shipping and easy returns.
- Curated B-Series inventory to complete your top-end service (retainers, locks, seals, guides).
FAQ
Will this fit my 12-valve 5.9L Cummins?Yes—this spring matches Cummins 3926700 for 1989–1998 5.9L 12-valve B-Series applications. For edge cases, verify with your ESN.
Is it for intake or exhaust?
Usage may be intake and/or exhaust depending on the specific build; confirm by ESN or parts catalog for your engine.
How many do I need?
The 5.9L 12-valve uses 12 springs total (one per valve). This listing is sold individually. Order the quantity required for your service.
Do I need new retainers or locks?
Inspect and replace worn retainers/locks. Pairing with a fresh set (e.g., matching Interstate-McBee retainers) helps maintain correct installed height and reliability.
Are the spring pressures OEM-stock?
Yes—this is an OEM-equivalent replacement designed to meet factory specifications. Always measure installed height and follow the Cummins manual.
