Featured Item View 9 Photos View 0 Videos USED CAT C7 250HP Engine – Good Running Takeout – Warranty $10,250 USD Caterpillar C7 – 250HP – Used – Good Running Takeout – Warranty, Reliable Caterpillar C7 diesel engine removed from a running unit and verified as a good running takeout prior to removal.... Warranty ConditionUsedHorse Power250 HPStock Number2195 MLS Number14373353CategoryEngines Last Updated7/6/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 4 Photos View 0 Videos REBUILT 2007 Caterpillar C15 MXS Engine 550HP Tested Runner – Warranty $33,000 USD CORE EXCHANGE NEEDED, GOOD RUNNING ENGINE Warranty ConditionRemanufacturedHorse Power550 HPStock Number1186 MLS Number11420800CategoryEngines Last Updated6/16/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 10 Photos View 0 Videos USED 1999 CUMMINS N14 CELECT / CELECT PLUS ENGINE – CPL 2592 – 525HP – TESTED RUNNER – WARRANTY $15,350 USD USED 1999 CUMMINS N14 CELECT / CELECT PLUS ENGINE – CPL 2592 – 525HP – TESTED RUNNER – WARRANTY, Reliable Cummins N14 Celect / Celect Plus diesel engine removed from a running unit and... Warranty ConditionUsedCPL/ARR2592Horse Power525 HPStock Number2204 MLS Number14419943CategoryEngines Last Updated6/16/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 10 Photos View 0 Videos Used 2008 Cummins ISM410 Engine 410HP CPL2728 Tested Running Diesel Motor Warranty $12,500 USD 🔧 Used 2008 Cummins ISM410 Diesel Engine – 410HP – CPL2728 – Tested Runner, For sale is a Cummins ISM410 diesel engine, removed from a working application and professionally inspected and... Warranty ConditionUsedCPL/ARR2728Horse Power410 HPStock Number2201 MLS Number14415045CategoryEngines Last Updated6/16/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 9 Photos View 0 Videos Used 2014 Cummins ISX15 550HP CPL3939 Diesel Engine Running Good Warranty $19,530 USD Used 2014 Cummins ISX15 550HP CPL3939 Diesel Engine Running Good Warranty You are purchasing a used 2014 Cummins ISX15 diesel engine , Engine Model: Cummins ISX15, , Horsepower: 550 HP, , ... Warranty ConditionUsedCPL/ARR3939Horse Power550 HPStock Number2193 MLS Number14356394CategoryEngines Last Updated6/16/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 9 Photos View 0 Videos 2014 Cummins ISX15 550HP Engine – TESTED – GOOD RUNNER – USED $20,000 USD 2014 Cummins ISX15 Diesel Engine – 550HP – Run Tested, This listing represents a 2014 Cummins ISX15 engine rated at approximately 550HP. This is a used engine that has been run tested and... Warranty ConditionUsedHorse Power550 HPStock Number2172 MLS Number14274685CategoryEngines Last Updated6/16/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 5 Photos View 0 Videos 2021 Caterpillar 3406E Engine $36,000 USD Engine Rebuilding 2020 Caterpillar 3406E, Hp:550 S#2WS CORE EXCHANGE NEEDED Warranty ConditionRemanufacturedPart Number9007640Weight3500Stock Number2035 MLS Number11079751CategoryEngines Last Updated6/16/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Cummins 4BT B3.9 Engine With Transmission and Radiator $7,000 USD GOOD RUNNING ENGINE, WITH TRANSMISSION AND RADIATOR Warranty ConditionUsedHorse Power130 HPPart Number55F4D130AStock Number1412 MLS Number11852050CategoryEngines Last Updated9/30/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 8 Photos View 0 Videos 2004 Mack AC-427 427HP Diesel Engine – Tested Runner – Warranty – Video $11,000 USD 2004 Mack AC-427 Diesel Engine – 427 HP – USED, Reliable used Mack AC-427 diesel engine rated at 427 HP @ 1,800 RPM. Engine will be inspected and tested prior to sale, with running video... Warranty ConditionUsedHorse Power427 HPStock Number2038 MLS Number14630457CategoryEngines Last Updated9/29/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2007 Mercedes OM460LA MBE4000 450HP EGR DPF Diesel Engine – Used – Warranty $15,000 USD 2007 Mercedes-Benz OM460LA / MBE4000 12.8L Diesel Engine – 450 HP – EGR / DPF, Used Mercedes-Benz OM460LA / MBE4000 diesel engine rated at 450 HP @ 1,900 RPM. This engine is an EPA 2007... Warranty ConditionUsedHorse Power460 HPStock Number2037 MLS Number14624831CategoryEngines Last Updated9/24/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 11 Photos View 0 Videos CAT C15 6NZ 550HP Rebuilt Diesel Engine 2026 – New Head – Warranty – Video $41,000 USD Caterpillar C15 6NZ 550 HP Rebuilt Diesel Engine, Professionally rebuilt Caterpillar C15 6NZ diesel engine rated at 550 HP. This engine has undergone an extensive rebuild using new internal... Warranty ConditionUsedHorse Power550 HPStock Number2036 MLS Number14612816CategoryEngines Last Updated9/18/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 10 Photos View 0 Videos 2016 Cummins ISB 6.7L 370HP CPL4577 Dodge Ram Diesel Engine – Used $11,000 USD 2016 Cummins ISB 6.7L 370 HP – Dodge / Ram Application, Used 2016 Cummins ISB 6.7L turbo diesel engine, rated at 370 HP, configured for Chrysler / Dodge Ram application Cummins engine... ConditionUsedCPL/ARR4577Horse Power370 HPStock Number2035 MLS Number14611066CategoryEngines Last Updated9/17/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 9 Photos View 0 Videos 1989 Cummins 4BT3.9GEN.DR(86) CPL793 Diesel Engine Generator Industrial – Used $7,500 USD 1989 Cummins 4BT 3.9L Diesel Engine – CPL 793 – USED, Used Cummins 4BT 3.9L 4-cylinder diesel engine, originally configured for generator/industrial applications. This is a mechanical... Warranty ConditionUsedCPL/ARR793Horse Power86 HPStock Number2034 MLS Number14610998CategoryEngines Last Updated9/17/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 9 Photos View 0 Videos 2009 Cummins 4BTA 3.9L 125HP CPL2264 Diesel Engine – USED – Turbo – Tested Runner $7,500 USD Cummins 4BTA 3.9L 125 HP Diesel Engine – CPL 2264 – USED, Reliable Cummins 4BTA 3.9L 4-cylinder turbocharged diesel engine, rated at 125 HP @ 2,200 RPM. This engine is being sold as a USED... Warranty ConditionUsedCPL/ARR2264Horse Power125 HPStock Number2033 MLS Number14610877CategoryEngines Last Updated9/17/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos 1999 Caterpillar 3126 Engine $8,350 USD CORE EXCHANGE NEEDED, GOOD RUINING ENGINE Warranty ConditionUsedHorse Power330 HPStock Number1333 MLS Number11738278CategoryEngines Last Updated9/1/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 8 Photos View 0 Videos 2018 Freightliner Cascadia Day Cab Complete Cab & Hood Assembly OEM Black $5,000 USD 2018 Freightliner Cascadia Day Cab Complete Cab Hood Assembly – Used OEM, Complete used OEM Day Cab and Hood Assembly removed from a 2018 Freightliner Cascadia This listing is for the... ConditionUsedStock Number2030 MLS Number14533701CategoryCabs Last Updated8/26/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 8 Photos View 0 Videos USED 1997 Cummins M11 CELECT PLUS Engine 370HP CPL2037 – Tested Runner – Warranty $9,000 USD USED 1997 Cummins M11 CELECT PLUS Diesel Engine – 370HP – CPL 2037, Used Cummins M11 CELECT PLUS heavy-duty diesel engine rated at 370 HP with CPL 2037. Engine has been inspected and tested... Warranty ConditionUsedCPL/ARR2037Horse Power370 HPStock Number2032 MLS Number14565953CategoryEngines Last Updated8/26/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 1 Video REMANUFACTURED - 2001 Caterpillar C15 6NZ REBUILT Engine 550HP Tested Runner – Warranty $39,500 USD Rebuilt 2001 Caterpillar C15 6NZ Diesel Engine For Sale with Jake Brakes, 550HP, SINGLE TURBO, 6 Cylinders, 15.2L, 70-PIN, Engine Serial# 6NZ***, Stock# 2424 Warranty ConditionRemanufacturedHorse Power550 HPStock Number2029 MLS Number13506484CategoryEngines Last Updated8/26/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 2001 Rebuilt Caterpillar C15 6NZ 550HP Diesel Engine – Warranty – Tested $39,500 USD 🔧 Rebuilt Caterpillar C15 6NZ Diesel Engine – 550HP – Tested – Warranty, Professionally rebuilt Caterpillar C15 6NZ diesel engine, tested prior to sale and ready for installation. The 6NZ... Warranty ConditionRemanufacturedHorse Power550 HPWeight3500Stock Number2205 MLS Number14457673CategoryEngines Last Updated8/26/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 10 Photos View 0 Videos 1999 Caterpillar 3406E 1LW 550HP 40-Pin Diesel Engine | Tested Runner $18,500 USD 🔥 1999 CATERPILLAR 3406E 1LW – 550 HP – 40 PIN, Used Caterpillar 3406E 1LW diesel engine available from Optimum Truck Parts 🔧 ENGINE DETAILS, , Manufacturer: Caterpillar, , Model:... Warranty ConditionUsedHorse Power550 HPStock Number2031 MLS Number14557735CategoryEngines Last Updated8/26/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2019 Peterbilt 579 Complete Sleeper Cab & Hood Assembly OEM Gray $8,500 USD 2019 Peterbilt 579 Complete Sleeper Cab Hood Assembly – Used OEM, Complete used OEM sleeper cab and hood assembly removed from a 2019 Peterbilt 579 Donor Vehicle Information:, Year: 2019... ConditionUsedStock Number2029 MLS Number14533699CategoryCabs Last Updated8/10/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 9 Photos View 0 Videos 2017 Freightliner Cascadia 113 Complete Sleeper Cab & Hood Assembly OEM White $5,500 USD Freightliner Cascadia 113 Complete Sleeper Cab Hood Assembly – Used OEM, Complete used OEM sleeper cab and hood assembly removed from a Freightliner Cascadia 113 Included in Sale:,... ConditionUsedStock Number2028 MLS Number14533696CategoryCabs Last Updated8/10/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos 2017 Peterbilt 579 Complete Day Cab Assembly and Hood OEM Used Blue $7,000 USD 2017 Peterbilt 579 Complete Day Cab Assembly – Used OEM, Used OEM cab removed from a 2017 Peterbilt 579 Year: 2017, Make: Peterbilt, Model: 579, Cab Type: Day Cab, Color: Blue /... ConditionUsedStock Number2026 MLS Number14533670CategoryCabs Last Updated8/10/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 11 Photos View 0 Videos 2014 International ProStar+ 122 Complete Sleeper Cab & Hood Assembly OEM $5,500 USD 2014 International ProStar+ 122 Complete Sleeper Cab Hood Assembly – Used OEM, Complete used OEM sleeper cab and hood assembly removed from a 2014 International ProStar+ 122 Donor Truck... ConditionUsedStock Number2027 MLS Number14533671CategoryCabs Last Updated8/10/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 2017 Freightliner Cascadia 125 Complete Sleeper Cab & Hood Assembly OEM Used Black $4,000 USD Used OEM sleeper cab removed from a 2017 Freightliner Cascadia Cab is being sold as pictured and includes the components currently installed and shown in the listing photos Details:, Make... ConditionUsedStock Number2025 MLS Number14533668CategoryCabs Last Updated8/10/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info