Product Description
Cummins 3900267 — Tappet (Pushrod) Cover Bolt Grommet Seal
MPN: 3900267 | Also Known As: pushrod/tappet cover bolt grommet, grommet seal | Sold: Individually — 6 required per engine
Why This Part
- ✓ OE sealing to stop oil weep at tappet cover bolt heads.
- ✓ Direct-fit for 1989–1998 5.9L 12-valve B-Series Ram applications.
- ✓ Correct material/durometer for heat & oil resistance.
- ✓ Replace anytime the cover is removed to prevent recurring leaks.
Quick Specs
| Type | Tappet/Pushrod cover bolt grommet seal |
|---|---|
| OE Part # | 3900267 |
| Qty Required | 6 per engine (sold individually) |
| Cross-Ref (ID only) | Interstate-McBee M-3900267 |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1989–1998 | 5.9L 12-Valve (6BT) B-Series | Ram 2500/3500 |
Industrial/Off-Highway: Used primarily on B5.9 Euro 2 configurations; always confirm by ESN for non-automotive engines.
Often Paired With
- Tappet/Pushrod Cover: Cummins 3990732 (’89–’98 5.9L)
- Tappet Cover Gasket: Cummins 3284623 (’89–’02 B-Series)
- Engine oil & cleaner to degrease mating surfaces before reassembly
What’s In The Box
- (1) Genuine Cummins Grommet Seal (3900267)
- Bolts, cover, and gasket sold separately (see “Often Paired With”).
Install Tips
- Replace all six grommets during service to ensure uniform clamping.
- Clean bolt heads and cover; lightly oil the new grommets before install.
- Torque to factory spec and re-check for seepage after initial heat cycle.
FAQ
WILL THIS FIT MY 1989–1998 5.9L CUMMINS RAM?Yes—these are the OE tappet/pushrod cover bolt grommet seals used on 1989–1998 5.9L 12-valve Ram applications (verify by VIN/ESN).
HOW MANY GROMMETS DO I NEED?Six (6) per engine. This listing is sold individually; order quantity 6 for a complete set.
DOES THIS INCLUDE THE COVER OR BOLTS?No—this is the grommet seal only. The cover (3990732) and gasket (3284623) are separate items.
WILL THIS WORK ON 1998.5–2002 24-VALVE ENGINES?Some catalogs group the gasket through 2002, but XDP lists the grommet’s vehicle fitment as 1989–1998. If your engine is 1998.5–2002, verify by VIN/ESN and cover style before ordering.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3900267.
