JJ Engine Parts
$2,000.00Unit price /UnavailableJJ Engine Parts
Cummins ISL9 OEM Engine Control Module ECM ECU 5317106 5317107 CM2350
$1,000.00Unit price /Unavailable- Sold out
JJ Engine Parts
Cummins ISB QSB OEM Diesel Engine Exhaust Manifold 4990882 5261382
$120.00Unit price /Unavailable JJ Engine Parts
Cummins ISB6.7L OEM Engine EGR Cooler 5254314 5566765 5317072
$299.99Unit price /UnavailableJJ Engine Parts
Freightliner OEM BHM Bulkhead Cab Control Module 06-75157-000
$899.99Unit price /UnavailableJJ Engine Parts
Mercedes Benz OM460LA OEM Diesel Engine Control Module ECM ECU A0044466740
$800.00Unit price /UnavailableJJ Engine Parts
Detroit DD13 OEM Diesel Engine Control Module ECM ECU A0024460935
$1,000.00Unit price /Unavailable- Sold out
JJ Engine Parts
Mack AMI OEM Diesel Engine Computer Module ECM ECU 12MS530M
$600.00Unit price /Unavailable JJ Engine Parts
Caterpillar 3456 OEM Engine Control Module ECU ECU 9BZ 212-9449 235-1571 176-5782
$2,000.00Unit price /Unavailable- Sold out
JJ Engine Parts
International DT466E OEM Diesel Engine Control Module ECM ECU 1833341C1
$600.00Unit price /Unavailable - Sold out
JJ Engine Parts
Caterpillar C7 OEM Engine Control Module ECM ECU 240-5302-02 348-2376-01 WAX
$800.00Unit price /Unavailable JJ Engine Parts
Cummins ISX OEM Engine Control Module ECM ECU 3684275 3684276 CM871
$2,000.00Unit price /UnavailableJJ Engine Parts
Continental Aftertreatment Control Module 5WK91226 A044N007 CM2220H
$350.00Unit price /UnavailableJJ Engine Parts
Caterpillar C10 C12 OEM Diesel Engine Tensioner Mounting Bracket 133-7040-01
$120.00Unit price /UnavailableJJ Engine Parts
Caterpillar C13 OEM Diesel Engine Fan Hub Support Bracket 249-9313-01
$130.00Unit price /Unavailable- Sold out
JJ Engine Parts
Cummins OEM Diesel Engine Air Transfer Connection 3068015
$80.00Unit price /Unavailable - Sold out
JJ Engine Parts
International Maxxforce 9 OEM Diesel Engine Control Module ECM ECU 7095136C91
$2,500.00Unit 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.