Cummins ISB 5.9L Engine Parts For Sale

Cummins ISB 5.9L Engine Oil Cooler

$100 USD

Good, used Oil Cooler from Cummins 6BT 5.9 engine. The Oil Cooler has been visually inspected and is in good working condition. There is minor rust and corrosion around the Oil Cooler. The...

Condition	Used
Part Number	P-14998
Stock Number	P-14998
MLS Number	12493740
Category	Engine Oil Coolers
Last Updated	12/18/2023
Location	Kankakee, IL, US
Sold By	River Valley Truck Parts

Cummins ISB 5.9L Engine Part

$75 USD

Good, used air transfer elbow from a Cummins 6BT 5.9 engine. The air transfer elbow has been visually inspected and has no visible damage. the air transfer elbow has minor corrosion. The...

Condition	Used
Part Number	P-14997
Stock Number	P-14997
MLS Number	12493737
Category	Engine Miscellaneous Parts
Last Updated	12/18/2023
Location	Kankakee, IL, US
Sold By	River Valley Truck Parts

Cummins ISB 5.9L Engine Part

$35 USD

Good, used rear cover plate from a Cummins 6BT 5.9 engine. The rear cover plate has been visually inspected and is in good working condition. There is no visible damage on the rear cover....

Condition	Used
Part Number	P-14996
Stock Number	P-14996
MLS Number	12493734
Category	Engine Miscellaneous Parts
Last Updated	1/1/2026
Location	Kankakee, IL, US
Sold By	River Valley Truck Parts

Cummins ISB 5.9L Timing Cover

$150 USD

Good, used timing cover from a Cummins 6BT 5.9engine. The timing cover has been visually inspected and is in good working condition. The interior of the timing cover has minor cracks in the...

Condition	Used
Part Number	P-14995
Stock Number	P-14995
MLS Number	12493733
Category	Timing Covers
Last Updated	2/12/2026
Location	Kankakee, IL, US
Sold By	River Valley Truck Parts

Cummins ISB 5.9L Valve Cover

$150 USD

Good, used valve cover from a Cummins6BT 5.9 engine. The valve cover has been visually inspected and is in good working condition. The valve cover has no visible damage. The bolt holes are...

Condition	Used
Part Number	P-14992
Stock Number	P-14992
MLS Number	12493729
Category	Valve Covers
Last Updated	12/18/2023
Location	Kankakee, IL, US
Sold By	River Valley Truck Parts

Cummins ISB 5.9L Front Engine Cover

$100 USD

Good, used front cover from a Cummins 6BT5.9 engine. The front cover has been visually inspected and is in good working condition. The front cover is no visible damage. All bolt holes are...

Condition	Used
Part Number	P-14991
Stock Number	P-14991
MLS Number	12493728
Category	Front Engine Covers
Last Updated	12/18/2023
Location	Kankakee, IL, US
Sold By	River Valley Truck Parts

(GOOD USED) Cummins ISB 5.9L 24-Valve Diesel Engine Connecting Rod Part# 3954656

$49.99 USD

PART SPECIFICS, Price USD: $49.99 (SOLD INDIVIDUALLY), Make: CUMMINS 24 VALVE 5.9L ISB DIESEL ENGINE, Model: CONNECTING RODS, Part#: 3954656, Stock#: 323439, Condition: GOOD...

Warranty

Quantity	3
Condition	Used
Part Number	3954656
Stock Number	323439
MLS Number	12429590
Category	Engine Rods
Last Updated	11/17/2023
Location	Rockwood, TN, US
Sold By	Machinery and Truck Parts

(GOOD USED) Cummins ISB 5.9L 24-Valve Diesel Engine Rocker Housing OEM-Part# 3955121

$139.99 USD

PART SPECIFICS, Price USD: $139.99, Make: CUMMINS ISB 5.9L 24-VALVE DIESEL ENGINE, Model: ROCKER HOUSING / VALVE COVER SPACER, Part#: 3955121, Stock#: 323448,...

Warranty

Condition	Used
Part Number	3955121
Stock Number	323448
MLS Number	12429600
Category	Valve Covers
Last Updated	11/7/2023
Location	Rockwood, TN, US
Sold By	Machinery and Truck Parts

(GOOD USED) Cummins 5.9L 24 valve ISB Diesel Engine Front Timing Cover Part# 3965348

$149.99 USD

TIMING COVER SPECIFICS, Price USD: $149.99, Make: CUMMINS ISB 5.9L DIESEL ENGINE, Model: FRONT TIMING COVER, Part#: 3965348, Stock#: 323427, Condition: ...

Warranty

Condition	Used
Part Number	3965348
Stock Number	323427
MLS Number	12429540
Category	Timing Covers
Last Updated	11/7/2023
Location	Rockwood, TN, US
Sold By	Machinery and Truck Parts

(GOOD USED) Cummins ISB 24-Valve 5.9L Diesel Engine Camshaft Part# 3954099

$189.99 USD

PART SPECIFICS, Price USD: $189.99, Make: CUMMINS ISB 5.9L 24-VALVE DIESEL ENGINE, Model: CAMSHAFT OEM, Part#: 3954099, Stock#: 323417, Condition: GOOD...

Warranty

Condition	Used
Part Number	3954099
Stock Number	323417
MLS Number	12429500
Category	Camshafts
Last Updated	11/7/2023
Location	Rockwood, TN, US
Sold By	Machinery and Truck Parts

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Cummins ISB 5.9L Camshaft

$175.50 USD

New Aftermarket Cummins Camshaft Application:, Cummins ISB 6-Cylinders Engine Covered for 1 year – up to 100,000 miles / 160,984 km, or 1,200 hours, whichever occurs first, providing the...

Condition	New
Part Number	AK-3954099
Stock Number	AKM 3954099
MLS Number	11200304
Category	Camshafts
Last Updated	10/21/2023
Location	Fitchburg, MA, US
Sold By	Rydemore Heavy Duty Truck Parts

New Aftermarket Cummins ISB Camshaft

$670 USD

New Aftermarket Cummins ISB Camshaft

Quantity	3
Condition	Used
Part Number	3942567
Stock Number	503-12598
MLS Number	12377849
Category	Camshafts
Last Updated	10/13/2023
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

(Tested Good) ECM Computer from Cummins CM550 ISB 5.9L 24valve Diesel Engine fits 98-03 P# P3944124

$499.99 USD

ITEM DESCRIPTION, (TESTED PART) FITS CUMMINS ISB 5.9L 24-Valve Diesel Engine, NON-EGR Model DIESEL ENGINE, PART# P3944124, (PROGRAMMING MAY BE REQUIRED) INCLUDES WARRANTY. STOCK# 320326...

Warranty

Quantity	5
Condition	Used
Assembly Number	p3944124
Engine Model	ISB 5.9L 24-Valve
Fits To Make(s)	Cummins
Fits To Model(s)	ISB 5.9L 24-Valve Non-Egr CM550
Will Fit Year(s)	1998 1999 2000 2001 2002 2003
Part Number	P3944124
Stock Number	320326
MLS Number	11056330
Category	Engine Control Modules (ECM)
Last Updated	7/10/2023
Location	Rockwood, TN, US
Sold By	Machinery and Truck Parts

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Cummins ISB 5.9L Engine Control Module (ECM)

Contact for price

(Core) 2005 Cummins ISB 5.9, ECM- Part Number: 4921776 Serial Number: 26018710 E/C: Z90030.18 Engine: ISB 5.9 Displacement: 5.9L Horsepower: 215 CPL: 8136 ESN: 46510387 For more information...

Condition	Used
Part Number	4921776
Stock Number	P-51523
MLS Number	12142818
Category	Engine Control Modules (ECM)
Last Updated	7/7/2023
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

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Cummins ISB 3923178 Air Transfer Elbow Tube

$50 USD

(GOOD USED) Cummins ISB 3923178 Air Transfer Elbow Tube For Sale, Intake Elbow off a Cummins ISB 5.9L Engine, Elbow shape, 3923178, Part# 3923178, Stock # 4624 All our PARTS are TESTED and...

Condition	Used
Part Number	3923178
Stock Number	4624
MLS Number	12094419
Category	Engine Miscellaneous Parts
Last Updated	5/31/2023
Location	Opa Locka, FL, US
Sold By	CA Truck Parts Inc.

Reconditioned Cummins ISB 5.9L Crankshaft

$895 USD

Reconditioned ISB 5.9L Crankshaft

Condition	Remanufactured
Part Number	3941199
Stock Number	508-12012
MLS Number	11978778
Category	Crankshafts
Last Updated	1/30/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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Cummins ISB 5.9L Camshaft

$625 USD

Nous livrons partout au Canada et États-Unis. We ship anywhere in Canada USA. - Stock : 2567CA - P/N : 3942567, Serial#: Other

Condition	Used
Stock Number	2567CA
MLS Number	11945965
Category	Camshafts
Last Updated	3/18/2023
Location	Beauceville, QC, Canada
Sold By	Camions Gilbert

Used Cummins ISB 5.9L Exhaust Rocker

$27 USD

Used ISB 5.9L Exhaust Rocker, Type: exhust rockers

Condition	Used
Fits To Make(s)	Cummins
Fits To Model(s)	ISB 5.9L EGR
Part Number	3941928
Stock Number	525-15422
MLS Number	11925603
Category	Engine Valve Trains
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

Cummins ISB 5.9L 24-Valve Diesel Engine Connecting Rod Part# 3971210

$74.99 USD

PART SPECIFICS, Price USD: $74.99 (SOLD INDIVIDUALLY), Make: CUMMINS ISB 5.9L 24-VALVE DIESEL ENGINE, Model: CONNECTING ROD, Part#: 3971210, Stock#: 321466,...

Warranty

Quantity	3
Condition	Used
Part Number	3971210
Stock Number	321466
MLS Number	11858661
Category	Engine Rods
Last Updated	2/2/2023
Location	Rockwood, TN, US
Sold By	Machinery and Truck Parts

(844) 329-___ SHOW
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Cummins ISB 5.9L Engine Control Module (ECM)

$675 USD

Cummins ISB ECM - P?N 3944124; Good Takeoff 5.9 Diesel Engine PCM 3009586 J9077. Call or message with any questions or visit our website.

Condition	Used
Part Number	3944124
Stock Number	3034
MLS Number	11518008
Category	Engine Control Modules (ECM)
Last Updated	12/1/2022
Location	Springville, PA, US
Sold By	Summit Core Supply

Used Cummins ISB 5.9L Rear Main Seal Housing

$67 USD

Used ISB 5.9L Rear Main Seal Housing, Type: Rear Main Seal Cover

Condition	Used
Fits To Make(s)	Cummins
Fits To Model(s)	ISB 5.9L
Part Number	3921043
Stock Number	507-17991
MLS Number	11673891
Category	Engine Covers
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

(844) 385-___ SHOW
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Cummins ISB 5.9L Engine Control Module (ECM) for EPA04

$750 USD

(GOOD USED/ TESTED) Cummins ISB, EPA04, Diesel Engine Control Module, ECM, ECU, for sale!!!!Part #: 4921776; Service Model Name: CM850; Stock #: E2920 For more information about this listing...

Condition	Used
Fits To Model(s)	EPA04
Part Number	4921776
Stock Number	E2920
MLS Number	11577026
Category	Engine Control Modules (ECM)
Last Updated	9/2/2022
Location	Hialeah, FL, US
Sold By	JJ Rebuilders Inc.

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Cummins ISB 5.9L Engine Control Module (ECM) for CM850 Being Dismantled (Parts Available)

$200 USD

(CORE/ FOR PARTS OR NOT IN WORKING CONDITION) Cummins ISB 5.9L Engine Control Module, ECM, ECU, for sale!!!!! Part #: 4921776; Service Model Name: CM850; Stock #: E2849 For more information...

Condition	Dismantled
Fits To Model(s)	CM850
Part Number	4921776
Stock Number	E2849
MLS Number	11492321
Category	Engine Control Modules (ECM)
Last Updated	7/14/2022
Location	Hialeah, FL, US
Sold By	JJ Rebuilders Inc.

Used Cummins ISB 5.9L EGR EGR Cooler Assembly

$350 USD

Used ISB 5.9L EGR EGR Cooler Assembly, Type: EGR Cooler Assembly

Condition	Used
Fits To Make(s)	Cummins
Fits To Model(s)	ISB 5.9L EGR
Part Number	4337538
Stock Number	505-11747
MLS Number	11415581
Category	EGR Coolers
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts