JJ Engine Parts
Cornell 3HC-EM16 Water Pump Dewatering Fluid End with Val-Matic Swing Flex
$2,500.00Unit price /Unavailable- Sold out
JJ Engine Parts
Pioneer PP63C17 Water Pump PP63C17L2-E0311 63C17-0061
$2,500.00Unit price /Unavailable - Sold out
JJ Engine Parts
Pioneer PP44S8L71-E04 Water Pump PPEM44S8 Swig Flex 504A
$2,500.00Unit price /Unavailable JJ Engine Parts
International Maxxforce 9 OEM Engine Control Module ECM ECU 7095136C91
$2,500.00Unit price /UnavailableJJ Engine Parts
Paccar MX-13 OEM Diesel Engine Control Module ECU ECM 2300479 2302109 705300AT
$2,000.00Unit price /UnavailableJJ Engine Parts
Paccar MX-13 OEM J3 EPA13 Engine Wiring Harness 2002993
$1,500.00Unit price /UnavailableJJ Engine Parts
Mercedes Benz OEM OM906LA Engine Control Module ECM ECU 0014466440
$550.00Unit price /UnavailableJJ Engine Parts
Cummins X15 Diesel Engine Control Module ECM ECU CM2350 4384413 4384412
$1,500.00Unit price /UnavailableJJ Engine Parts
DAVCO Diesel Pro 243 Fuel Filter Water Separator Fuel Heater 6540909 6841065
$150.00Unit price /UnavailableJJ Engine Parts
International Maxxforce 15 OEM Diesel Engine Control Module ECM ECU 3007009C2 0281020159
$1,200.00Unit price /UnavailableJJ Engine Parts
Detroit Series 60 14.0L Engine Control Module ECM ECU RA0064463540 DDEC6
$2,000.00Unit price /UnavailableJJ Engine Parts
Detroit DD15 EPA17 Diesel Engine Control Module ECM ECU A0014465835
$800.00Unit price /UnavailableJJ Engine Parts
Paccar MX-13 Control Module ECM ECU 1877245 2015228 2109556 2013285 2298831
$2,000.00Unit price /UnavailableJJ Engine Parts
Caterpillar C4.4 OEM Diesel Engine Control Module ECU ECM 331-7539-00
$1,000.00Unit price /UnavailableJJ Engine Parts
Caterpillar C12 Engine Control Module ECM ECU 212-9450 117-4212-02 10R-4085
$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.