CUMMINS 3912895 OEM VE INJECTION PUMP LOCK WASHER – RAM 5.9L (1989–1993)

Product Description

The Cummins 3912895 OEM VE Injection Pump Lock Washer is the factory-correct securing washer used on 1989–1993 Dodge Ram 2500/3500 trucks equipped with the 5.9L 12-Valve Cummins and Bosch VE rotary injection pump. This genuine Cummins washer ensures the injection pump drive gear remains properly clamped under load, preventing slippage, timing drift, and premature wear of the VE pump shaft. When performing VE pump timing, resealing, or replacement, using the correct OEM Cummins 3912895 hardware eliminates guesswork and restores the precision the 12-valve platform is known for.

Fitment

• 1989–1993 Dodge D/W 250 & 350 with 5.9L 12-Valve Cummins (6BT)
• Designed specifically for Bosch VE rotary injection pump applications
• Works with OEM VE pump gear, nut, and taper-fit shaft

Cross-Reference (Cummins-Only)

Related Cummins VE pump service hardware:

• CUMMINS 3910810 Exhaust Rocker Lever – 12V 6BT
• CUMMINS 3903924 Timing Pin – 5.9L 12-Valve
• CUMMINS 3900267 Tappet Cover Bolt Grommet Seal

FAQ

Is this washer required when reinstalling a Bosch VE injection pump?

Yes. The 3912895 lock washer is part of the OE hardware stack-up on the VE pump gear. It is essential for maintaining correct clamp load and preventing timing slip.

Can I reuse the old VE pump lock washer?

Reuse is not recommended. Over time the washer loses tension and can deform. New OEM Cummins hardware ensures proper load on the VE pump gear.

Does this work on P7100 (P-pump) engines?

No. The P7100 injection pump uses different hardware. This washer is only for VE-pump 1989–1993 12-valve Cummins engines.

Is this washer compatible with aftermarket VE pump gears?

It is designed for OEM tolerances, but most aftermarket VE pump gears maintain OEM thickness and will accept the 3912895 lock washer.

Specifications for cummins 3912895