View 2 Photos View 0 Videos 2019 Used Cummins X12 Air Compressor Support Newly Listed $50 USD Used X12 Air Compressor Support, Type: Air Compressor Bracket, Material: Steel ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number3694419Stock Number502-18674 MLS Number14283338CategoryEngine Brackets Last Updated4/3/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2019 Used Cummins X12 Front Engine Mount Support Newly Listed $160 USD Used X12 Front Engine Mount Support, Type: Engine Brace, Material: Cast Iron ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number5537056Stock Number502-18675 MLS Number14283337CategoryEngine Brackets Last Updated4/3/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2019 Used Cummins X12 Front Engine Mount Newly Listed $400 USD Used X12 Front Engine Mount, Position: Front, Type: Engine Mount, Material: Cast Iron ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number5537054Stock Number548-13479 MLS Number14283331CategoryEngine Mounts Last Updated4/3/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Used Cummins X12 Rocker Shaft Newly Listed $71.95 USD Used X12 Rocker Shaft, Type: LEVER SHAFT ConditionUsedWill Fit Year(s)2019 & UpPart Number3697835Stock Number525-17328 MLS Number14276550CategoryEngine Valve Trains Last Updated4/1/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Used Cummins X12 Intake Rocker Arm Newly Listed $75 USD Used X12 Intake Rocker Arm, Type: Intake Rocker Arm ConditionUsedWill Fit Year(s)2019 & UpPart Number3697295Stock Number525-17331 MLS Number14276549CategoryEngine Valve Trains Last Updated4/1/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Used Cummins X12 Rocker Support Newly Listed $130 USD Used X12 Rocker Support, Type: Rocker Support ConditionUsedWill Fit Year(s)2019 & UpPart Number3695359Stock Number525-17332 MLS Number14276548CategoryEngine Valve Trains Last Updated4/1/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos Used Cummins X12 Intake Rocker Arm Newly Listed $75 USD Used X12 Intake Rocker Arm, Type: Intake Rocker Arm ConditionUsedPart Number3697292Stock Number525-17499 MLS Number14276512CategoryEngine Valve Trains Last Updated4/1/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 8 Photos View 0 Videos Used Cummins X12 Exhaust Rocker Arm Newly Listed $75 USD Used X12 Exhaust Rocker Arm, Type: Exhaust Rocker Arm ConditionUsedPart Number3697533Stock Number525-17500 MLS Number14276511CategoryEngine Valve Trains Last Updated4/1/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 13 Photos View 0 Videos 2019 Used Cummins X12 Exhaust Manifold $215 USD Used X12 Exhaust Manifold, Type: Complete ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number3694307Stock Number518-15145 MLS Number14267818CategoryExhaust Manifolds Last Updated3/26/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Used Cummins X12 Injector Wiring Harness $67.50 USD Used X12 Injector Wiring Harness, Type: Fuel Injector Wiring Harness ConditionUsedWill Fit Year(s)2019 & UpPart Number5575360Stock Number514-12980 MLS Number14267817CategoryEngine Wiring Harnesses Last Updated3/26/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Used Cummins X12 Rocker Shaft $15 USD Used X12 Rocker Shaft, Type: Rocker Shaft ConditionUsedWill Fit Year(s)2019 & UpPart Number3697795Stock Number525-17329 MLS Number14263958CategoryEngine Valve Trains Last Updated3/25/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2019 Used Cummins X12 Accessory Bracket $75 USD Used X12 Accessory Bracket, Type: Accessory Bracket, Material: Aluminum Quantity2ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number5486960Stock Number502-18670 MLS Number14257621CategoryEngine Brackets Last Updated3/21/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos 2019 Used Cummins X12 EGR Cooler Bracket $80 USD Used X12 EGR Cooler Bracket, Type: EGR Cooler Bracket, Material: Cast Iron ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number3693707Stock Number502-18672 MLS Number14257620CategoryEngine Brackets Last Updated3/21/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos 2019 Used Cummins X12 Accessory Bracket $65 USD Used X12 Accessory Bracket, Type: Accessory Bracket, Material: Cast Iron ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number5536547Stock Number502-18673 MLS Number14257619CategoryEngine Brackets Last Updated3/21/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2019 Used Cummins X12 Air Cleaner Baffle $50 USD Used X12 Air Cleaner Baffle, Type: Air Baffle ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number5575676Stock Number546-10742 MLS Number14257618CategoryBreathers Last Updated3/21/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2019 Used Cummins X12 Front Engine Support $170 USD Used X12 Front Engine Support, Type: Front Support Bracket, Material: Cast Iron ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number5537056Stock Number502-18676 MLS Number14256043CategoryEngine Brackets Last Updated3/20/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 2019 Used Cummins X12 Fuel Rail $215 USD Used X12 Fuel Rail, Type: Fuel Rail ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number4384083Stock Number547-10777 MLS Number14256042CategoryManifolds Last Updated3/20/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Used Cummins X12 Connecting Rod $150 USD Used X12 Connecting Rod ConditionUsedWill Fit Year(s)2019 & UpPart Number3693233Stock Number532-11093 MLS Number14256041CategoryEngine Rods Last Updated3/20/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Cummins X12 Engine Control Module (ECM) for a Cummins X12 EPA 17 $200.24 USD USED OEM CUMMINS X12 EPA 17 CCU MODULE, BOSCH AD00A10032, CUMMINS 5594319 ConditionUsedFits To Make(s)CUMMINSFits To Model(s)X12 EPA 17Stock Number2556264 MLS Number14254656CategoryEngine Control Modules (ECM) Last Updated3/19/2026 LocationAthens, GA, US Sold ByLKQ Heavy Truck (855) 905-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Cummins X12 DPF Filter for a Cummins X12 EPA 17 $1,596.48 USD DPF KIT CONSISTING OF 1 DPF, 2 GASKETS, AND 2 CLAMPS FOR CUMMINS X15/X12 EPA17 ConditionNewFits To Make(s)CUMMINSFits To Model(s)X12 EPA 17Stock NumberSKY XQ0710-C MLS Number13241369CategoryDiesel Particulate Filters (DPF) Last Updated3/15/2026 LocationLansing, IL, US Sold ByLKQ Heavy Truck (855) 905-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 14 Photos View 0 Videos Cummins X12 Engine for a 2021 Western Star 4700SF $29,000 USD GOOD RUNNER,QUALITY A+, Serial#: 75090890, Horse Power: 430HP @ 1900 RPM, ARR/CPL: 5580 / 11.8 LITRES, Part Make: CUMMINS ConditionUsedCPL/ARR5580 / 11.8 LITRESFits To Make(s)WESTERN STARFits To Model(s)4700SFWill Fit Year(s)2021Stock Number1A1E52999 MLS Number11637029CategoryEngines Last Updated3/12/2026 LocationSte-Julie, QC, Canada Sold ByCamions Lussier-Lussicam inc. (844) 503-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2019 Used Cummins X12 Vibration Damper $200 USD Used X12 Vibration Damper, Type: Viscous, Diameter: 11 3/4" ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number3698300Stock Number579-10932 MLS Number14235518CategoryEngine Harmonic Balancers Last Updated3/11/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos 2019 Used Cummins X12 Cam Gear $75 USD Used X12 Cam Gear, Type: Camshaft Gear ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number3692546Stock Number513-27341 MLS Number14235517CategoryEngine Gears Last Updated3/11/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 6 Photos View 0 Videos 2019 Used Cummins X12 Idler Gear $35 USD Used X12 Idler Gear, Type: Idler Gear ConditionUsedFits To Make(s)CumminsFits To Model(s)X12Will Fit Year(s)2019Part Number3692549Stock Number513-27342 MLS Number14235516CategoryEngine Gears Last Updated3/11/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Used Cummins X12 Exhaust Rocker Arm $75 USD Used X12 Exhaust Rocker Arm, Type: Exhaust Rocker Arm ConditionUsedWill Fit Year(s)2019 & UpPart Number3697534Stock Number525-17330 MLS Number14235515CategoryEngine Valve Trains Last Updated3/11/2026 LocationDorr, MI, US Sold ByFrontier Truck Parts (855) 300-___ SHOWNUMBERCall Seller Email Seller Save More Info