- Sold out
JJ Engine Parts
Caterpillar C4.4 OEM Diesel Engine Control Module ECM ECM 331-7539-00 10R-8112
$1,000.00Unit price /Unavailable JJ Engine Parts
Allison A51 3000RDS Transmission TCM 29545536 A51016GP 10R-042848
$425.00Unit price /UnavailableJJ Engine Parts
HINO Turbocharger Control Unit 813162-04 W4T94177 E0070
$199.99Unit price /UnavailableJJ Engine Parts
International Maxxforce 9 EPA07 Engine Control Module ECM ECU 1883086C93
$1,000.00Unit price /UnavailableJJ Engine Parts
Detroit DD8 OEM Diesel Engine Control Module ECM ECU A0024461535/002
$1,000.00Unit price /UnavailableJJ Engine Parts
Cummins ISM OEM Diesel Engine Control Module ECM ECU 3103533 CM875
$1,500.00Unit price /UnavailableJJ Engine Parts
Cummins ISL9 Control Module ECM ECU CM2350 5317106 5317107 5290170 5290171
$1,000.00Unit price /Unavailable- Sold out
JJ Engine Parts
Cummins ISX15 Control Module ECM ECU 5317106 5290171 5317107 5297106
$1,000.00Unit price /Unavailable- Sold out
JJ Engine Parts
Cummins ISL9 OEM Control Module ECM ECU CM2350 5290170 5290171 5317106 5317107
$1,000.00Unit price /Unavailable JJ Engine Parts
Maxxforce 13 OEM Diesel Engine Control Module ECM ECU 3007009C2
$1,000.00Unit price /Unavailable- Sold out
JJ Engine Parts
Horton Fan for Paccar MX-13 Engine 98A9592 99A9592 010024553 F17-1019M02
$550.00Unit price /Unavailable JJ Engine Parts
Allison B500RM Automatic Transmission 9430012408 29537725
$2,000.00Unit price /UnavailableJJ Engine Parts
Allison 3000RDS_P Automatic Transmission 6511191095 c
$2,750.00Unit price /Unavailable- Sold out
JJ Engine Parts
Mercedes Benz MBE4000 Diesel Engine Breather A0000189035
$180.00Unit price /Unavailable JJ Engine Parts
Detroit DD15 OEM Diesel Engine Control Module ECM ECU A0004467635
$800.00Unit price /UnavailableJJ Engine Parts
Horton Electronic Fan Clutch EC450 1477702 4323445 996015 986000 986062 986063
$450.00Unit price /UnavailableJJ Engine Parts
Caterpillar 3456 Diesel Engine Control Module ECM ECM 235-1571 10R1824 176-5782
$2,000.00Unit 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.