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 Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2012 Cummins ISX15 Engine $39,995 USD 2012/2013 Cummins ISX-15 Rebuild! CPL: 3719 - 3937 - 3938 - 3939, 100% Rebuilt to 550HP!, ECM can be set to 600 HP!, Engine has a brand new Borg Warner 800HP Detroit Turbo!, FULLY... Warranty ConditionUsedCPL/ARR3719Horse Power550 HP MLS Number14384578CategoryEngines Last Updated5/22/2026 LocationMiramar, FL, US Sold ByJSJ Diesel Sales, Inc. (855) 718-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos 2016 Cummins ISX Engine $23,995 USD 2016 Cummins ISX CPL-4588 550 HP, 192k Miles ! - Mint Condition!, ECM is Included, We have many versions and Years of ISX in Stock!, We also stock these Cummins ISX Engines CPL-4585 -... Warranty ConditionUsedUsage100,000 MilesCPL/ARR4588Horse Power550 HP MLS Number14375928CategoryEngines Last Updated5/18/2026 LocationMiramar, FL, US Sold ByJSJ Diesel Sales, Inc. (855) 718-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 2015 Cummins ISX15 Engine $22,995 USD 2015 Cummins ISX15 CPL3939 Diesel Truck Engine - Fully Tested, Warranty 550 HP, Engine Brake, Turbo 90 Days Warranty Please call Joe for a quote! - 954-205-3067 Warranty ConditionUsedUsage100,000 MilesCPL/ARR3939Horse Power550 HP MLS Number14374648CategoryEngines Last Updated5/18/2026 LocationMiramar, FL, US Sold ByJSJ Diesel Sales, Inc. (855) 718-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 2015 Cummins ISX15 Engine $21,695 USD 2015 Cummins ISX15 Diesel Truck Engine - Fully Tested, Warranty 550 HP, Engine Brake, Turbo, Engine will be cleaned and painted and look like the example pictures, Listing price is per... Warranty ConditionUsedUsage100,000 MilesHorse Power550 HP MLS Number14374637CategoryEngines Last Updated5/17/2026 LocationMiramar, FL, US Sold ByJSJ Diesel Sales, Inc. (855) 718-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 8 Photos View 0 Videos 2012 USED Cummins ISX15 CPL3491 550HP Engine – Tested Runner – Warranty $18,970 USD Cummins ISX15 – 550HP – CPL 3491 – Used – Tested Runner – Warranty, Reliable Cummins ISX15 diesel engine removed from a running unit and verified as a tested runner prior to removal. This... Warranty ConditionUsedCPL/ARR3491Horse Power550 HPStock Number2194 MLS Number14373324CategoryEngines Last Updated5/15/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 1 Video Cummins ISX15 Engine for a 2022 Kenworth T880 $22,500 USD X15 565HP, CPL 5479, CM 2450 ESN#80387009. WILL TEST RUN AND INSPECT IN OUR GEARSHOP. 180 DAY WARRANTY ON HEAD BLOCK AND CRANK., Serial#: 80387009, Horse Power: 565, ARR/CPL: 5479 ConditionUsedCPL/ARR5479Horse Power565 HPFits To Make(s)KenworthFits To Model(s)T880Will Fit Year(s)2022Stock Number41526-2 MLS Number14370831CategoryEngines Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 1 Video Cummins ISX15 Engine for a 2018 Peterbilt 389 $16,500 USD X15 565HP 4343CPL CM 2350, ESN#80028223, WILL TEST RUN AND CHECK BEARINGS IN OUR ENGINE SHOP. 180 DAY WARRANTY., Serial#: 80028223, Horse Power: 565, ARR/CPL: 4343 ConditionUsedCPL/ARR4343Horse Power565 HPFits To Make(s)PeterbiltFits To Model(s)389Will Fit Year(s)2018Stock Number41426-4 MLS Number14370823CategoryEngines Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 1 Video Cummins ISX15 Engine for a 2015 Kenworth W900 $15,995 USD ISX15 550HP ESN#79717203 CM2350 CPL3939.RAN GOOD, HEAD AND CAM REPLACED 4 YRS AGO,AS PER OWNER,WILL TEST RUN AND CHECK BEARINGS. 180 DAY WARRANTY ON HEAD BLOCK AND CRANK., Serial#: 79717203,... ConditionUsedCPL/ARR3939Horse Power550 HPFits To Make(s)KenworthFits To Model(s)W900Will Fit Year(s)2015Stock Number41026-5 MLS Number14322538CategoryEngines Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Cummins ISX15 Engine for a 2014 Kenworth T800 $23,995 USD ISX15 600HP ESN#79644682, CM2350, CPL3939, WILL INSPECT BEARINGS. TEST RUNS GOOD VERY LIGHT BLOWBY. HAS AFTERMARKET BULLY DOG TURBO AND NEW HEAD.HAS BEEN DELETED,REBUILT IN 2023 TRYING TO... ConditionUsedHorse Power600 HPFits To Make(s)KenworthFits To Model(s)T800Will Fit Year(s)2014Stock Number32026-2 MLS Number14270266CategoryEngines Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 1 Video Cummins ISX Engine for a 2014 Peterbilt 389 $29,995 USD NOTES!! ISX SIGNATURE 600 SERIES 600 HP, CPL#2834 ESN#60820911 CM570. RUNS GOOD, NEW VALVE CAM,FRESH OVERHEAD. BEARINGS LOOK GOOD. CONVERTED INTO PETE 2014 389,WE HAVE ALL OF THE CONVERSION... ConditionUsedCPL/ARR2834Horse Power600 HPFits To Make(s)PeterbiltFits To Model(s)389Will Fit Year(s)2014Stock Number22626-3 MLS Number14245493CategoryEngines Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Cummins ISX Engine for a 2009 Kenworth T800 $17,995 USD ISX SIGNATURE SERIES, 600HP ESN#79346112 CM871 CPL2919. PENDING INSPECTION WILL TEST RUN AND CHECK BEARINGS.HAS BEEN DELETED/TURBO CHANGED/NON VGT 180 DAY WARRANTY ON HEAD, BLOCK, CRANK.,... ConditionUsedHorse Power600 HPFits To Make(s)KenworthFits To Model(s)T800Will Fit Year(s)2009Stock Number22826-1 MLS Number14236512CategoryEngines Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Cummins ISX15 Engine for a 2024 Kenworth T880 $29,995 USD PENDING INSPECTION/ X15 565HP, WILL TEST RUN, CHECK ROD AND MAIN BEARINGS. WILL INSPECT CAMSHAFT AND ROCKERS.180 DAY WARRANTY ON HEAD BLOCK AND CRANK, Serial#: 80530195, Core Charge: 5000,... ConditionUsedCPL/ARR5880Horse Power565 HPFits To Make(s)KenworthFits To Model(s)T880Will Fit Year(s)2024Part NumberX15Stock Number12626-3 MLS Number14121974CategoryEngines Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Cummins ISX15 Engine for a 2017 Peterbilt 389 $16,995 USD PENDING INSPECTION/ WILL TEST RUN, ROD AND MAIN BEARINGS WILL BE INSPECTED. 180 DAY WARRANTY ON HARD PARTS, Serial#: 79931580, Horse Power: 550 ConditionUsedHorse Power550 HPFits To Make(s)PeterbiltFits To Model(s)389Will Fit Year(s)2017Stock Number71425-1 MLS Number13727227CategoryEngines Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Cummins ISX15 Engine for a 2016 Kenworth T680 $18,995 USD ISX15 550HP CPL4585 CM2350,RODS MAINS OK, CAM TURBO OK BUIL;D #6543, 180 DAY WARRANTY BLOCK HEAD CRANK, Serial#: 79863566, Horse Power: 550, ARR/CPL: 4585 ConditionUsedCPL/ARR4585Horse Power550 HPFits To Make(s)KenworthFits To Model(s)T680Will Fit Year(s)2016Part NumberCM2350Stock Number32825-1 MLS Number13500579CategoryEngines Last Updated5/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos 2006 Cummins ISX Engine - 550 HP, ARR/CPL 8519 $24,500 USD ISX TAKE OUT ~ $24,500 w/ Exchange, Serial#: 79161514, Horse Power: 550, ARR/CPL: 8519 ConditionUsedCPL/ARR8519Horse Power550 HPWill Fit Year(s)2006Part Number79161514Stock Number295463211 MLS Number13165753CategoryEngines Last Updated5/14/2026 LocationWinger, MN, US Sold ByLucken Trucks and Parts (833) 637-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2012 Cummins ISX15 Engine $22,695 USD Engine is ready to ship!, 2012 ISX-15 CPL: 3719 550 HP, Some pictures are example only... Please request current pictures. Warranty ConditionUsedUsage264,000 MilesCPL/ARR3719Horse Power550 HPStock Number10301 MLS Number10208757CategoryEngines Last Updated5/10/2026 LocationMiramar, FL, US Sold ByJSJ Diesel Sales, Inc. (855) 718-___ SHOWNUMBERCall Seller Email Seller Save More Info
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 Updated5/7/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 11 Photos View 0 Videos 2006 Cummins ISX CPL8518 565HP Engine – Strong Runner – Warranty $14,000 USD Cummins ISX Diesel Engine – 565HP – CPL 8518 – EGR – Used – Strong Runner, Reliable Cummins ISX diesel engine removed from a running unit and verified as a strong running takeout prior to... Warranty ConditionUsedCPL/ARR8518Horse Power565 HPStock Number2175 MLS Number14282805CategoryEngines Last Updated4/2/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 7 Photos View 0 Videos 2012 012 Cummins ISX15 550HP Engine – CPL 3606 – Fully Tested | Warranty $21,000 USD For Sale: 2012 Cummins ISX15 Diesel Engine – 550 HP – CPL 3606, At Optimum Truck Parts, we specialize in used, rebuilt, and new diesel engines, transmissions, and heavy-duty truck parts... Warranty ConditionUsedCPL/ARR3606Horse Power550 HPStock Number2160 MLS Number14247541CategoryEngines Last Updated3/17/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos USED- 2006 Cummins ISX15 Engine, FULLY TESTED, W/WARRANTY $15,000 USD Used 2006 Cummins ISX15 Diesel Engine, fully tested and ready for installation. This engine has been inspected, run-tested, and verified to be in good operating condition prior to removal.... Warranty ConditionUsedHorse Power550 HPStock Number2154 MLS Number14222450CategoryEngines Last Updated3/4/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos USED- 2016 Cummins ISX15 Diesel Engine CPL4585, FULLY TESTED, W/WARRANTY $19,000 USD USED – 2016 Cummins ISX15 550HP Diesel Engine – CPL4585 – Fully Tested, Reliable Cummins ISX15 diesel engine removed from a running unit and fully tested prior to sale. This engine is in... Warranty ConditionUsedCPL/ARR4585Horse Power550 HPStock Number2148 MLS Number14162555CategoryEngines Last Updated2/26/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos USED- 2016 Cummins ISX15 (CPL4585) Diesel Engine, Fully/Tested / Warranty $19,000 USD GOOD RUNNING ENGINE Warranty ConditionUsedCPL/ARR4585Horse Power550 HPStock Number2140 MLS Number14153942CategoryEngines Last Updated2/19/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos USED - 2016 Cummins ISX15 Diesel Engine | Fully Tested | Warranty $19,000 USD good running engine Warranty ConditionUsedCPL/ARR4588Horse Power600 HPStock Number2139 MLS Number14149947CategoryEngines Last Updated2/18/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos USED - 2015 Cummins ISX15 Engine (CPL3939) $19,000 USD USED GOOD RUNNING ENGINE Warranty ConditionUsedCPL/ARR3939Horse Power550 HPStock Number2131 MLS Number14117086CategoryEngines Last Updated1/29/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info