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CUMMINS

CUMMINS 4089173 OEM LOWER ENGINE GASKET KIT – RAM 5.9L (2003–2007)

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SKU:
CUM4089173
MPN:
4089173
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  • CUMMINS 4089173 OEM LOWER ENGINE GASKET KIT – RAM 5.9L (2003–2007)
  • CUMMINS 4089173 OEM LOWER ENGINE GASKET KIT – RAM 5.9L (2003–2007)
$469.50
724-785-4022

Description

Genuine Cummins

Cummins 4089173 — Lower Engine Gasket Kit (ISB 5.9L)

MPN: 4089173  |  Also Known As: lower end gasket set, conversion gasket set  |  Complements: Upper kit 4089819 (sold separately)

Why This Part

  • ✓ OE gasket coverage for the lower end (from oil pan up through gear housing interfaces).
  • ✓ Direct-fit for 2003–2007 Ram 5.9L ISB (common-rail).
  • ✓ Leak prevention with correct materials/geometry for diesel temps and pressures.
  • ✓ Great for refresh/reseal or rebuild projects.
OE Fit Lower-End Kit 5.9L 2003–2007

Quick Specs

Type Lower engine gasket kit (conversion set)
OE Part # 4089173
Covers Oil pan, cooler/core gaskets, gear housing interfaces, select O-rings & washers (contents vary by ESN)
Qty Required 1 per engine (sold as a kit)

Verified Fitment (Automotive)

Year RangeEngineChassis
2003–2007 Ram 5.9L ISB (24V Common-Rail) Ram 2500/3500

Industrial/Off-Highway: Common on Stage 3B ISB/QSB 5.9 applications—always verify by ESN.

Often Paired With

  • Upper Engine Gasket Kit: Cummins 4089819 (’03–’07 5.9L)
  • Front Crankshaft Seal (with wear sleeve): 3802820
  • Rear Main Seal: 5405392 · Rear Main w/ Repair Sleeve: 3926126
  • Oil Cooler Gaskets (5.9L ’03–’07): 3864458 (cooler→filter), 4895742 (cooler→block)

What’s In The Box

  • (1) Genuine Cummins Lower Engine Gasket Kit (4089173)
  • Front/rear crankshaft seals typically not included—order separately as needed.

Install Tips

  • Clean all mating surfaces thoroughly; avoid abrasives that gouge aluminum.
  • Dry-fit complex areas (gear housing, filter head/cooler) before final torque.
  • Use proper sealant where the service manual calls for it; torque to spec and recheck after heat cycle.

FAQ

WILL THIS FIT MY 2003–2007 5.9L CUMMINS RAM?

Yes—4089173 targets 2003–2007 5.9L ISB common-rail Rams (verify by VIN/ESN).

DOES THIS KIT INCLUDE FRONT/REAR CRANKSHAFT SEALS?

Usually no—order front (3802820) and rear main (5405392 or 3926126 with sleeve) separately.

IS THIS A GENUINE CUMMINS KIT?

Yes—OE Cummins 4089173 with the correct gasket materials for diesel service.

WHAT UPPER GASKET KIT MATCHES THIS?

Use Cummins 4089819 (upper engine kit) to complete a full reseal on 2003–2007 5.9L engines.

WILL THIS WORK ON 6.7L TRUCKS?

This listing is for 5.9L (’03–’07) Rams. Industrial 6.7L variants may use different kits—confirm by ESN.

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Additional Information

Vehicle Year:
2003,2004,2005,2006,2007
Vehicle Make:
DODGE RAM
ENGINE:
5.9L
Part Type:
GASKET SET
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