JJ Engine Parts
WABCO HINO HyABS-D Brake Module ECU ECM 4460440850 4008504080
$300.00Unit price /UnavailableJJ Engine Parts
Allison B500RM Automatic Transmission 9430014920 29549640 29535583
$2,000.00Unit price /UnavailableJJ Engine Parts
Cummins ISX12 Control Module ECM ECU CM2350 5290170 5290171 5317106 5317107
$1,000.00Unit price /Unavailable- Sold out
JJ Engine Parts
Valeo DKS-15D A/C Compressor for Isuzu NQR NRR NPR Truck 8982861980
$250.00Unit price /Unavailable JJ Engine Parts
Hitachi Alternator for Isuzu 5.2L Engine 8980750250 LR1110-733C 12V 110AMPS
$250.00Unit price /Unavailable- Sold out
JJ Engine Parts
Hitachi Alternator for Isuzu 5.2L Engine 8980750250 LR1110-733C 12V 110AMPS
$250.00Unit price /Unavailable JJ Engine Parts
Mack MP8 Diesel Engine Control Module ECM ECU 21358126
$2,000.00Unit price /UnavailableJJ Engine Parts
Caterpillar C9 Diesel Engine Control Module ECM ECU 196-4159-02 222-5929 196-417
$1,000.00Unit price /Unavailable- Sold out
JJ Engine Parts
Volvo D13 Mack MP8 Diesel Engine Intake Manifold 21512860 21610053
$320.00Unit price /UnavailableJJ Engine Parts
Volvo D13 Mack MP8 Engine Front Timing Cover 21383315
$118.00Unit price /UnavailableJJ Engine Parts
Volvo D13 Mack MP8 Diesel Engine Water Manifold with Brackets 21394448 21337112
$170.00Unit price /UnavailableJJ Engine Parts
Caterpillar C15 MXS Control Module ECM ECU 248-5545 226-7469 246-9347 478-7931
$2,000.00Unit price /UnavailableJJ Engine Parts
Caterpillar C9 Diesel Engine Control Module ECM ECU 372-2906-00 241-7597
$2,000.00Unit price /UnavailableJJ Engine Parts
Cummins ISX12 OEM Engine Control Module ECM ECU 4993120 4993121 CM2250
$1,000.00Unit price /UnavailableJJ Engine Parts
Cummins OEM ISM Engine Control Module ECM ECU EPA07 4963807 4963808 CM876
$1,500.00Unit price /UnavailableJJ Engine Parts
Cummins ISX12 OEM Diesel Engine Wiring Harness 2892043 4374079 CM2250
$1,000.00Unit 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.