Cummins 3802376 Lower Gasket Kit | 89-98 5.9L 12V Cummins

89-98 Dodge 5.9L 12 Valve Cummins Diesel Lower Engine Gasket Kit

-10 %

Cummins 3802376 Lower Engine Gasket Kit 1989-1998 5.9L 12 Valve Cummins

$670.75

$745.27

Part Number: 3802376
Est. Ship Time: Usually Ships By Next Business Day

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The Cummins 3802376 lower engine gasket kit is the complete bottom-end sealing set for the 1989-1998 Dodge 5.9L 12 Valve Cummins, covering the hydraulic pump, lube oil pump, front seal service, piston cooling nozzles, timing housing, and lower-end O-rings and sealing washers. This is the lower-end kit only - it does not include the cylinder head gasket or upper-engine seals. For a complete engine reseal, pair this kit with one of the upper engine gasket sets listed below. Cummins part number 3802376 supercedes 3802376-01.

Buy this if...

You are resealing or rebuilding the lower end of a 1989-1998 5.9L 12 Valve Cummins.
You need the piston cooling nozzles, front seal service kit, and timing housing gasket in one kit.
You are sourcing both upper and lower kits for a full engine gasket replacement.

Do not choose this if...

You only need the head gasket and upper seals - order an upper engine kit instead.
Your engine is a 1998.5 or newer 24 Valve ISB - different lower gasket set required.

Verify before ordering...

Engine is confirmed as 12 Valve 5.9L Cummins, 1989-1998.
Upper engine gasket kit ordered separately if doing a full reseal.

Lower Kit Only - Upper Kit Sold Separately

The 3802376 covers the bottom end of the engine. It does not include the cylinder head gasket, valve cover gaskets, exhaust manifold gaskets, or injector seals - those come in the upper engine gasket kit. For a complete top-to-bottom reseal on a 1989-1998 5.9L 12 Valve Cummins, order this lower kit and one of the upper kits together. If your head and block surfaces are untouched, pair with the standard-thickness upper kit. If material was removed during machining, choose the appropriate over-thickness upper kit.

Pair this lower kit with the correct upper kit for your build:

Standard-thickness upper engine gasket kit - for untouched head and block surfaces
.010-over upper engine gasket kit - for lightly resurfaced heads or decks
.020-over upper engine gasket kit - for heavier resurface or decked blocks

If your build only needs the lower end addressed, the 3802376 is the correct kit to order on its own.

What Comes in the Box

The Cummins 3802376 covers the lower-end sealing components for the 1989-1998 5.9L 12 Valve Cummins engine.

Hydraulic pump gasket kit
Lube oil pump gasket
Front seal service kit
Piston cooling nozzles
Sealing washers
Seal rectangular O-ring
Timing housing gasket
Seal O-rings (two different types)
Seal rectangular O-ring (second application)

This kit covers the lower-end sealing path. Cylinder head bolts, head gasket, and upper-engine gaskets are not included - source the upper engine kit separately for a complete reseal.

Cummins 3802376 Specs

Confirm your engine and part number against the specs below before ordering.

Part Number	3802376 (supercedes 3802376-01)
Brand	Cummins
Fitment	1989-1998 Dodge 5.9L 12 Valve Cummins
Kit Type	Lower engine gasket set
Head Gasket Included	No - upper engine kit sold separately

If your engine and application match, the 3802376 is the correct lower-end kit to order.

Cross Reference Numbers for 3802376

If your rebuild sheet, service manual, or existing parts list calls out any number below, the Cummins 3802376 is the confirmed match.

Cummins: 3802376, 3802376-01, 3802029, 3802267, 3802026, 3802363, 3804897
Mahle: CS4068, RM959
FP Diesel: 3804897, 3804897S, 3802376
McBee: M3804897S, M-3802376
NAPA: CS9332
PAI: 23731

Avoid These Common Mistakes

This Is the Lower Kit Only:
The 3802376 does not include the head gasket, valve cover gaskets, injector seals, or any upper-engine seals. If you are doing a full engine reseal, you must also order an upper engine gasket kit. Order both kits together to have the complete sealing set in hand before teardown.

Ordering for a 24 Valve engine: This kit is for the 12 Valve 5.9L only. The 1998.5+ 24 Valve ISB Cummins uses a different lower gasket set.
Expecting head bolts to be included: Head bolts are not part of this lower-end kit and must be sourced separately.

1989-1998 5.9L 12 Valve Cummins Fitment

Fits all 1989-1998 Dodge 5.9L 12 Valve Cummins applications.

1989-1993 Dodge D250 / D350 / W250 / W350 5.9L 12 Valve Cummins
1994-1998 Dodge Ram 2500 / Ram 3500 5.9L 12 Valve Cummins

Does not fit 1998.5 or newer 24 Valve ISB Cummins or later common rail 5.9L engines.

Final Checks Before You Order

Engine confirmed as 12 Valve 5.9L Cummins, 1989-1998
Upper engine gasket kit selected and ordered separately for full reseal
Head bolts sourced separately - not included in this kit
Cross reference confirmed: 3802376 matches your build sheet or superseded 3802376-01

For a 1989-1998 5.9L 12 Valve Cummins bottom-end reseal or full engine rebuild, the Cummins 3802376 is the correct lower engine gasket kit to order.

Frequently Asked Questions

Click or tap a question below to expand the answer.

Does the Cummins 3802376 include the head gasket?

No - the 3802376 is the lower engine gasket kit and does not include the cylinder head gasket, valve cover gaskets, injector seals, or any upper-engine seals. For a complete top-to-bottom reseal on a 1989-1998 5.9L 12 Valve Cummins, order this kit alongside one of the upper engine gasket sets.

Will the Cummins 3802376 fit my 1996 Dodge Ram 2500 5.9L Cummins?

Yes - the 3802376 is confirmed for the 1989-1998 Dodge 5.9L 12 Valve Cummins, which includes the 1996 Ram 2500 and Ram 3500. Confirm your engine is the 12 Valve before ordering - the 1998.5 and newer 24 Valve ISB requires a different lower gasket set.

What is the difference between 3802376 and 3802376-01?

The current part number 3802376 directly supercedes 3802376-01. They are the same kit - the -01 suffix was the earlier revision. Ordering 3802376 is correct for both the old and current revision.

Does Mahle CS4068 replace Cummins 3802376?

Yes - Mahle CS4068 and RM959 are both confirmed cross-references for the Cummins 3802376 lower engine gasket set on the 1989-1998 5.9L 12 Valve Cummins. McBee M-3802376, FP Diesel 3802376, NAPA CS9332, and PAI 23731 also cross-reference to this same application.

What upper gasket kit do I need to pair with the 3802376?

For a complete reseal, pair the 3802376 with the correct upper engine gasket kit based on your machine work. The standard-thickness upper kit is correct when the head and block surfaces have not been machined. The .010-over upper kit covers light resurfacing, and the .020-over upper kit is for heavier resurface jobs or decked blocks. All three options are available as separate kits for the 1989-1998 12 Valve Cummins.

Will this fit a 1998.5 or newer 24 Valve Cummins?

No - the 3802376 is for the 12 Valve 5.9L Cummins only, covering 1989-1998 applications. The 1998.5 and later 24 Valve ISB Cummins engines use a different lower gasket set. Confirm your engine is the 12 Valve before ordering.