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CUMMINS

CUMMINS 3900250 OEM VALVE SPRING KEEPER (VALVE COLLET) – RAM 5.9L 12V (1989–1998)

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SKU:
CUM3900250
MPN:
3900250
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  • CUMMINS 3900250 OEM VALVE SPRING KEEPER (VALVE COLLET) – RAM 5.9L 12V (1989–1998)
  • CUMMINS 3900250 OEM VALVE SPRING KEEPER (VALVE COLLET) – RAM 5.9L 12V (1989–1998)
$4.20

Description

Genuine Cummins

Cummins 3900250 — Valve Spring Keeper / Valve Collet

MPN: 3900250  |  Also Known As: valve keeper, valve collet, valve lock  |  Quantity: Sold individually (24 required per 5.9L 12V engine, 2 per valve)

Why This Part

  • OE retainer lock that secures the valve spring to the valve stem.
  • Direct-fit for 5.9L 12-valve B-Series (’89–’98 Ram) for reliable valvetrain retention.
  • Hardened material built to Cummins specifications.
  • ✓ Perfect for top-end refresh or full rebuilds.
OE Fit Stock Replacement 24 Per Engine

Quick Specs

Type Valve spring keeper / valve collet
OE Part # 3900250
Qty Required 24 per 5.9L 12V engine (sold individually)
Material Hardened steel (OE spec)

Verified Fitment (Automotive)

Year RangeEngineChassis
1989–1998 Ram 5.9L Cummins (12-Valve, 6BT) Ram 2500/3500

Industrial/Off-Highway: Common across B-Series (4B/6B/ISB) applications—verify by ESN.

Often Paired With

  • Valve springs & retainers (refresh as a set for even wear)
  • Valve stem seals (e.g., 3957912 on many 12V builds)
  • Complete top-end gasket set for rebuilds

What’s In The Box

  • (1) Genuine Cummins Valve Spring Keeper / Collet (3900250)
  • Order 24 pieces for one engine.

Install Tips

  • Replace in matched pairs per valve; inspect retainers and valve tips.
  • Use proper spring compressor; verify keeper seating before releasing spring.
  • During rebuilds, measure installed height and spring pressures to spec.

FAQ

HOW MANY DO I NEED FOR A 5.9L 12-VALVE?

Twenty-four total (two keepers per valve × 12 valves). This part is sold individually.

WILL THIS FIT MY 1994–1998 12V RAM?

Yes—3900250 is the OE keeper for 12-valve 5.9L B-Series (’89–’98). Verify by VIN/ESN if the cylinder head has been changed.

IS THIS A GENUINE CUMMINS PART?

Yes—OE Cummins 3900250 with factory geometry and surface treatment.

DOES THIS WORK ON INDUSTRIAL 4B/6B ENGINES?

Common on many B-Series industrial variants, but always confirm by Engine Serial Number (ESN).

CAN I REPLACE JUST ONE KEEPER?

Replace in pairs per valve and inspect companion components (retainer, spring, valve tip) for wear or damage.

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Additional Information

Vehicle Year:
1989-1998
Vehicle Make:
DODGE
ENGINE:
5.9L 12V CUMMINS
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