JJ Engine Parts
Cummins ISM OEM Diesel Engine Control Module 3408501 3681405
$2,000.00Unit price /UnavailableJJ Engine Parts
Mack MP8 Diesel Engine Control Module OEM ECM ECU 21358126
$2,000.00Unit price /UnavailableJJ Engine Parts
Cummins ISX12 OEM Engine Control Module ECM ECU 4993120 4993121 CM2250
$1,000.00Unit price /Unavailable- Sold out
JJ Engine Parts
BorgWarner Fan Clutch for Cummins ISX15 Engine 1090-09650-01 010022621
$300.00Unit price /Unavailable JJ Engine Parts
BorgWarner OEM Fan Clutch for Caterpillar C13 C11 Engine 1090-09650-01BS 44219
$300.00Unit price /UnavailableJJ Engine Parts
BorgWarner Fan Clutch for Paccar MX-13 Engine 1090-09650-01B 010024558
$300.00Unit price /Unavailable- Sold out
JJ Engine Parts
Horton OEM Fan Clutch for Paccar MX-13 Diesel Engine 79A9761 98A9761
$550.00Unit price /Unavailable JJ Engine Parts
BorgWarner OEM Fan Clutch for Caterpillar C11 C13 Engine 1090-09500-01B 44219
$0.00Unit price /UnavailableJJ Engine Parts
Cummins OEM Diesel Engine Air Transfer Connection 3682674
$50.00Unit price /Unavailable- Sold out
JJ Engine Parts
Horton OEM Fan Clutch for MBE900 Diesel Engine 991450 981445 Sterling Freightliner
$550.00Unit price /Unavailable JJ Engine Parts
Paccar MX-13 OEM Diesel Engine Fuel Injector Line 1932625
$45.00Unit price /UnavailableJJ Engine Parts
Paccar MX-13 OEM Diesel Engine Fuel Injector Line 1932626
$59.99Unit price /UnavailableJJ Engine Parts
International DT466E DT530E Front Timing Cover with Oil Pump 1820465C4 1827851C1 1830468C1
$600.00Unit price /UnavailableJJ Engine Parts
Caterpillar C13 ACERT OEM Engine Control Module ECM ECU 223-1235-06 225-3159 223-1236
$1,000.00Unit price /Unavailable- Sold out
JJ Engine Parts
Caterpillar C4.4 OEM Diesel Engine Control Module ECU ECM 331-7539-00 10R-8112 11R-0326
$1,000.00Unit price /Unavailable JJ Engine Parts
Detroit DD16 OEM Diesel Engine Control Module ECM ECU A0014465835
$800.00Unit price /Unavailable- Sold out
JJ Engine Parts
Cummins OEM Electronic Interface Module with Nox Sensor 4359158 4326874
$300.00Unit price /Unavailable

Used Diesel Engine Parts for Trucks & Fleet Repairs
JJ Engine Parts supports fleet operators, repair shops, and independent diesel mechanics who need dependable used diesel engine parts. Whether you are sourcing Cummins or Detroit engine parts, or supporting other diesel platforms, selecting the correct component is critical.
That’s why we focus on parts that match OEM specifications and real-world applications. Our inventory is structured to help customers quickly find the right solution for rebuilds, replacements, and legacy engine repairs.
Used Engine Components Available
Our collection includes used truck engine parts for sale that are commonly required in diesel repair and maintenance. Availability changes based on inventory, but supported components often include:
- Used ECM ECU for sale (OEM and inspected used options)
- Used turbochargers for sale
- Cooling system components
- Affordable used engine parts for budget-conscious repairs
- Used OEM components for major diesel platforms, including Detroit and Cummins engine parts
Each listing is reviewed for compatibility with specific engine models whenever possible and verified prior to shipment.

Nationwide Shipping & Fitment Assistance at JJ Engine Parts
We ship used diesel engine parts across the United States, depending on part size and destination. JJ Engine Parts regularly supports major diesel platforms, including Cummins, Detroit Diesel, Caterpillar, Volvo, and PACCAR engines. Browse our selection of used engine parts, or contact our team to help you source the right component for your diesel truck.
Frequently Asked Questions About Used Engine Parts
How do I find the correct used engine part?
How do I find the correct used engine part?
Fitment depends on your engine model and serial number. Contact us for assistance before ordering.
Are used ECM or ECU units available?
Are used ECM or ECU units available?
Yes. Used ECM ECU units are available in OEM and inspected options when in stock.
Do you sell used turbochargers?
Do you sell used turbochargers?
Yes. Used turbochargers are offered based on availability.
Are used OEM engine components reliable?
Are used OEM engine components reliable?
When properly inspected and matched to the correct engine, used OEM components can provide dependable performance.
Do you ship used truck engine parts nationwide?
Do you ship used truck engine parts nationwide?
Yes, we ship used engine parts across the United States, depending on part size and destination.