Cummins 5473238 — Genuine Water Pump Kit for 5.9L & 6.7L ISB

MPN: 5473238  |  Also Known As: engine water pump, water pump kit  |  Supersedes / Cross-Refs (ID): 2881804, 2881805, 3286278, 68003402AA, 4955359

Restore OE cooling performance on B-Series trucks. This genuine Cummins water pump kit is a direct-fit replacement for 1989–2012 Ram 5.9L/6.7L applications and includes the mounting O-ring. Built to Cummins specifications for flow, bearing life, and seal integrity.

Features & Benefits

• OE flow & pressure to stabilize engine temperature under load.
• Direct-fit install with OE pulley offset and housing geometry.
• Premium bearing & mechanical seal for long service life.
• Includes mounting O-ring for leak-free reassembly.
• Genuine Cummins quality and durability.

Verified Fitment (Automotive)

Industrial/Off-Highway: Used on many B/QSB engines; Cummins notes 5473238 is used primarily on non-certified 5.9L B engines — verify by ESN for non-automotive equipment.

Specifications

• Type: Engine water pump kit (pump + mounting O-ring)
• OE Part Number: 5473238
• Supersedes / Cross-Refs (ID): 2881804, 2881805, 3286278, 68003402AA, 4955359
• Quantity Required: 1 per engine

Often Paired With

• Water inlet connection O-ring: 3906697 (replace as needed)
• Spare water pump O-ring: 3906698 (kit includes one; keep a spare if desired)
• Thermostat: 5292738 (’89–’93), 3934373/3928499 (’94–’98)
• Serpentine belt & coolant: replace/refresh during pump service

What’s In The Box

• (1) Genuine Cummins Water Pump
• (1) Mounting O-ring

Installation Tips

• Drain coolant below pump level and disconnect the belt; clean mating surfaces thoroughly.
• Lubricate the new O-ring lightly, seat the pump squarely, and torque fasteners to spec.
• Refill with the correct coolant mix, bleed air, and verify for leaks after warm-up.

FAQ

WILL THIS FIT MY 1989–2012 5.9L/6.7L CUMMINS RAM?

Yes—5473238 is listed for ’89–’12 5.9L & 6.7L Ram applications and includes the mounting O-ring. Always confirm by VIN/ESN.

WHAT DOES THE KIT INCLUDE?

The water pump and its mounting O-ring. Replace the inlet connection O-ring (3906697) if it’s flattened or brittle.

WHAT ABOUT 2013+ 6.7L TRUCKS?

Most 2013–2018 6.7L applications use Cummins 5521882. 2019–2024 use a different Mopar pump. Verify by VIN/ESN.

WHAT ARE COMMON CROSS-REFERENCES?

Common IDs include 2881804/2881805 (Cummins) and Mopar 68003402AA; earlier coverage also maps to 3286278. Use ESN to confirm interchange.

IS THIS A GENUINE CUMMINS PART?

Yes—OE Cummins 5473238.