-10 %
89-98 Dodge Ram 12 Valve 5.9L Cummins Rocker Arm Adjuster Screw
- Part Number: 3937438
- Est. Ship Time: Usually Ships By Next Business Day

SSL SECURE
TRANSACTION

AUTHENTIC
PRODUCTS

GUARANTEED PREMIUM
QUALITY

A+ Rating
This offer ends in:
Day
Hour
Min
Sec
More from this brand
Starting From $168.80 $187.56
Starting From $82.13 $91.26
Starting From $58.60 $65.11
Direct fit OEM replacement Cummins rocker arm adjuster screw for 89-98 Cummins.
Cummins: 3937438

1989-1998 12 Valve Cummins 5.9L Extreme duty 750hp and over
The pushrod is a very important and often overlooked component in any high horsepower ..
$219.00
Includes item #4 in second picture.
Turbo Oil drain tube gasket only.
Cummins: 5264569..
$5.00 $5.55
Injector Install Kit for 1989 - 1998 Dodge 5.9L 12V Cummins B, C Series.By Interstate Mcbee
Includes:
6: M-154087 Square Cut O-Ring
6: M-3903380 ..
$13.35 $14.82
Cummins: 3008400
Includes #4 in the second picture only!..
$19.41 $21.57
12x Cummins Part Number 3284377
Cummins stock push rods, complete set.
Item number 11 in the picture...
$270.52 $300.58
These Modified Rocker Arm Pedestals are machined/milled for installation of Head Studs in the 5.9L 12V Cummins Engines. Rather than having your old st..
$209.99
Using this lower connecting rod bearing directly from Cummins will retain factory fit and function. This is an OE replacement and installs directly in..
$34.57
First generation (1989-1993 Dodge 5.9L VE Cummins) mechanical fuel lift pump.
Lift pump only. Don't forget to get gaskets! This pump supplies 3-5PSI ..
$168.80 $187.56
Cummins part numbers:
Thermostat: 3928499
Seal: 3925466
Seal: 3927305 ..
$82.13 $91.26
Includes thermostat only, with seal ring.
Image for reference only.
Cummins part number: 5292742..
$58.60 $65.11
Genuine Cummins 5.9L Engine overhaul kit includes:
Pistons
Bushing clips
Upper engine gasket set
Lower engine gasket set
Rod bearings
..
$3,957.43
2003-2005 Dodge 5.9L Cummins Valve Cover
This valve cover DOES NOT have CCV breathers.
May fit other applications including some 6.7L Cummins QS..
$262.53 $291.70
Cummins front crank main seal. Includes seal driver installation ring.
Cummins 3804899..
$76.19 $84.65
Includes head gasket only. (Thick, dual hole gasket)
Cummins: 3958645..
$245.75 $273.06
Includes head gasket only. (Thin, single hole gasket)
Cummins: 3958644..
$232.20 $258.00
Cummins rocker box bolt set for 03-18 5.9L and 6.7L Cummins applications
Includes
3900678 (2)
3903096 (5)
Cummins: 2x3900678/5x39..
$41.32 $45.91
Using this upper connecting rod bearing directly from Cummins will retain factory fit and function. This is an OE replacement and installs directly in..
$28.68 $31.87
Options for standard/upgraded parts are available above
Genuine Cummins 5.9L Engine overhaul kit includes:
Pistons w/Rings
Bushing clip..
$5,627.53
Direct fit OEM cummins rocker box for 05-18 Dodge 5.9L And 6.7L Cummins applications
Cummins: 3974981..
$287.50 $319.44
06-24 Ram Cummins valve cover bolt rubber seal isolator, washer.6 seals required for installation.Part Number: 3973853..
$15.85 $17.61
6.7L Cummins Turbocharger VGT Actuator Harness Adapter allows the use of a 13-18 turbo actuator to be used on 07.5-12 Cummins trucks.Cummins: 534..
$59.53 $66.14
Installing a new exhaust manifold, or simply removing a stock or aftermarket manifold to change gaskets? If so, you'll find that it is a real hassle t..
$47.70 $52.99
Fits 89-02 5.9L Cummins. This is for a full set of 12
These bearings are now available COATED by Polydyn. Select option above.
Co..
$40.60 $45.09
89-02 Dodge Ram 5.9L Cummins Interstate McBee Gear Housing Dowel Pin
Interstate McBee: M-3900257..
$2.45 $2.70
Piston Ring Set (.020) for 89-02 5.9L Cummins. Contains rings for single cylinder, quantity of 6 required for complete set.Part number: S42221.020..
$29.46
Mahle h series main bearing set (standard) for 89-17 5.9L & 6.7L Cummins engines. H series bearings were originally developed for nascar type raci..
$211.41
Backordered with No ETA (Updated on 4/30/2025)
Mahle h series main bearing set (standard) for 89-17 5.9L & 6.7L Cummins engines. H..
$174.77
89-17 Dodge Ram 5.9L + 6.7L Cummins Interstate McBee Main Bearing Set (.10)Features:
Meets or exceeds original specificationsMade from high quality m..
$49.20 $54.69
89-17 Dodge Ram 5.9L + 6.7L Cummins Interstate McBee Main Bearing Set (.30)Features:
Meets or exceeds original specificationsMade from high quality m..
$43.85 $48.74
89-97 Dodge Ram 5.9L Cummins Interstate McBee Main Cap Ring Dowel
For 14mm main studs
McBee part number: M-3900068..
$1.85 $2.03
89-98 Dodge Ram 5.9L Cummins Interstate McBee Timing Pin Retainer RingDirect FitMeets or exceeds factory specsInterstate McBee: M-3904849..
$0.25 $0.30
Cummins part numbers:
Thermostat: 3928499
Seal: 3925466
Seal: 3927305 ..
$82.13 $91.26
62001010007 Backordered until the Beginning of July (Updated 5/7/25)
Timing tool kit for a Dodge Cummins with the inline P7100 fuel pump, otherwise..
$199.00
Mahle .020 Piston for 94-98 5.9L 12 valve Cummins. Does NOT include ringsSold as a set only. Priced per piece.Mahle: 224-3520.020..
$85.96
Mahle Standard Piston for 94-98 5.9L 12 Valve Cummins. Does NOT include ringsSold as a set only. Priced per piece.Mahle: 224-3520..
$81.20
Gator Fasteners Heavy Duty Main Studs are design to hold the bottom end of your 24 Valve 5.9L together whether you're building a tow rig, race truck o..
$229.99