JJ Engine Parts
BorgWarner Fan Clutch Kenworth T800 with Cummins ISX12 1090-09750-01 010023418
$350.00Unit price /UnavailableJJ Engine Parts
BorgWarner Fan Clutch Kenworth T800 with Cummins ISX12 1090-09750-01 010023418
$350.00Unit price /Unavailable- Sold out
JJ Engine Parts
Caterpillar C11 C13 Diesel Engine Fuel Injector 249-0707 10R1305
$200.00Unit price /Unavailable JJ Engine Parts
Mack OEM Diesel Engine Crankcase Breather 191GC433 232GB34
$75.00Unit price /UnavailableJJ Engine Parts
Detroit DD15 Diesel Engine Control Module ECM ECU A0014462835
$800.00Unit price /UnavailableJJ Engine Parts
Detroit DD13 Diesel Engine Control Module ECM ECU A0014462835
$800.00Unit price /UnavailableJJ Engine Parts
Cummins ISB6.7L Engine Control Module ECM ECU 5290170 5317106 5290171 5317107
$1,000.00Unit price /UnavailableJJ Engine Parts
Paccar MX-13 OEM Control Module ECM ECU 2013285 2015228 1877245 2109556 2298831
$2,000.00Unit price /UnavailableJJ Engine Parts
Mack AMI Diesel Engine Control Module ECM ECU 12MS530M
$600.00Unit price /UnavailableJJ Engine Parts
Paccar MX-13 OEM Diesel Engine Back Pressure Valve 1840165
$2,200.00Unit price /UnavailableJJ Engine Parts
Thompson Pump 6X6S2 Heavy Duty Trash and Dewatering Pump
$2,500.00Unit price /UnavailableJJ Engine Parts
Detroit DD15 Diesel Engine Control Module ECM ECU A0014465835
$800.00Unit price /Unavailable- Sold out
JJ Engine Parts
Allison B500RM Automatic Transmission 4th GEN 9430015806
$2,000.00Unit price /Unavailable JJ Engine Parts
Cummins QSB 6.7L Engine Control Module ECM ECU 5317106 5317107 CM2350
$1,000.00Unit price /UnavailableJJ Engine Parts
2007 Caterpillar C13 ACERT Engine Control Module ECM ECU 292-9610-01 243-2324
$2,000.00Unit price /UnavailableJJ Engine Parts
Mercedes Benz OM926LA Engine Control Module ECM ECU 0034461340
$600.00Unit price /UnavailableJJ Engine Parts
Detroit DD15 OEM Diesel Engine Control Module ECM ECU A0014465835
$800.00Unit 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.