View 1 Photo View 0 Videos 2026 International LT Tool Box Newly Listed $295 USD GOOD USED 12" TOOLBOX ASSY. ConditionUsedFits To Make(s)InternationalFits To Model(s)LTWill Fit Year(s)2026Stock Number51226-14 MLS Number14424399CategoryTool Boxes Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 2026 International LT Battery Box Newly Listed $400 USD GOOD USED BATTERY BOX ASSY, 30" ConditionUsedFits To Make(s)InternationalFits To Model(s)LTWill Fit Year(s)2026Stock Number51226-13 MLS Number14424398CategoryBattery Boxes / Trays Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 2026 International LT DEF Tank Newly Listed $450 USD GOOD USED DEF TANK ASSY., Engine Make: International, Engine Model: S13 ConditionUsedFits To Make(s)InternationalFits To Model(s)LTWill Fit Year(s)2026Stock Number51226-12 MLS Number14424397CategoryDiesel Exhaust Fluid (DEF) Tanks Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 2026 International LT DPF Filter Newly Listed Contact for price USED DPF ASSY, HAS SOME DAMAGE. LOW MILES, Engine Make: International, Engine Model: S13 ConditionUsedFits To Make(s)InternationalFits To Model(s)LTWill Fit Year(s)2026Stock Number51226-11 MLS Number14424396CategoryDiesel Particulate Filters (DPF) Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 2026 International LT Left Door Newly Listed $1,495 USD GOOD USED LH DOOR ASSY, POWER WINDOW, NO MIRROR., Window Type: Power ConditionUsedFits To Make(s)InternationalFits To Model(s)LTWill Fit Year(s)2026SideLEFTStock Number51226-10 MLS Number14424395CategoryDoors Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 2026 International LT Left Fuel Tank Newly Listed $450 USD GOOD USED LH FUEL TANK ASSY 37X26, Dimensions: 37X26, Material: Aluminum, Fuel Tank Shape: Round ConditionUsedFits To Make(s)InternationalFits To Model(s)LTWill Fit Year(s)2026SideLEFTStock Number51226-5 MLS Number14424394CategoryFuel Tanks (Truck) Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Kenworth W900 Left Door Vent Window Newly Listed $125 USD USED LH DOOR VENT WINDOW KENWORTH T600/ W900/ T800 ConditionUsedFits To Make(s)KenworthFits To Model(s)W900SideLEFTStock NumberP-61045 MLS Number14424390CategoryDoor Vent Windows Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 1 Video Eaton-Fuller RTLO18913A Transmission Newly Listed $4,895 USD REBUILT/DYNO RTLO18913A . 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE., Serial#: 62546, Core Charge: N/A, Engine Make: Other, Engine Model: Other ConditionRemanufacturedEngine ModelOtherPart Number62546Stock Number62546 MLS Number14424389CategoryTransmissions Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Meritor-Rockwell RD40-145 Front Differential Newly Listed $2,495 USD REBUILT RD40-145 6.43. 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE, Axle Spline Count: 41, Serial#: 62543, Core Charge: EXCHANGE CRITICAL CORE, Ratio: 6.43 ConditionRemanufacturedPart Number62543Stock Number62543 MLS Number14424388CategoryDifferentials, Front Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Meritor-Rockwell RD40-145 Front Differential Newly Listed $2,195 USD REBUILT RD 40-145 3.42. 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE, Axle Spline Count: 41, Serial#: 62545, Core Charge: EXCHANGE, Ratio: 3.42 ConditionRemanufacturedPart Number62545Stock Number62545 MLS Number14424387CategoryDifferentials, Front Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Meritor-Rockwell MT40-14X Front Differential Newly Listed $2,595 USD REBUILT MT40-14X 3.42. 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE., Axle Spline Count: 41, Serial#: 62544, Core Charge: EXCHANGE, Ratio: 3.42 ConditionRemanufacturedPart Number62544Stock Number62544 MLS Number14424384CategoryDifferentials, Front Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Used 2003 Peterbilt 379 Hood Assembly Newly Listed Contact for price USED HOOD ASSY WILL REPAIR. ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Stock Number51126-2 MLS Number14424383CategoryHoods Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Caterpillar 3406E Engine for a 2003 Peterbilt 379 Newly Listed $19,995 USD CAT 3406E, #5EK81839, 475HP, WILL TEST RUN AND CHECK BEARINGS IN OUR ENGINE SHOP, 180 DAY WARRANTY ON HEAD BLOCK AND CRANK. NOTES, Serial#: 5EK, Horse Power: 475 ConditionUsedHorse Power475 HPFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Stock Number51126-6 MLS Number14424382CategoryEngines Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 2003 Peterbilt 379 Charge Air Cooler (ATAAC) Newly Listed $895 USD GOOD USED COOLING PACK ASSY, WILL PRESSURE CHECK, 90 DAY WARRANTY, Engine Make: Caterpillar, Engine Model: 3406E ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Stock Number51126-3 MLS Number14424380CategoryIntercoolers & Charge Air Coolers Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 2003 Peterbilt 379 Right Air Cleaner / Air Filter Housing Newly Listed $450 USD USED AIR CLEANER ASSY 15'', Dimensions: 15", Material: METAL ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003SideRIGHTStock Number51126-15 MLS Number14424378CategoryAir Cleaners / Air Filter Housings Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer DSP40 Front Axle Housing for a 2003 Peterbilt 379 Newly Listed $1,395 USD DSP40 FRONT AXLE HOUSING EARLY LOW AIR LEAF, DRUM BRAKE., Hub Bolts: 10, Suspension: EARLY LOW AIR LEAF, Brake Type: DRUM ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Stock Number51126-11 MLS Number14424376CategoryAxle Housings, Front Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer DSP40 Rear Axle Housing for a 2003 Peterbilt 379 Newly Listed $1,395 USD RSP40 REAR AXLE HOUSING EARLY LOW AIR LEAF, DRUM BRAKE., Hub Bolts: 10, Suspension: EARLY LOW AIR LEAF, Brake Type: DRUM ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Stock Number51126-12 MLS Number14424375CategoryAxle Housings, Rear Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 2003 Peterbilt 379 Frame Horn Newly Listed $895 USD GOOD USED LH FRAMEHORN ASSY #02-03115L ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Stock Number51126-13 MLS Number14424374CategoryFrame Horns Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Eaton-Fuller RTLO18918B Transmission for a 2003 Peterbilt 379 Newly Listed $3,995 USD RTLO18918B USED TAKEOUT, WILL INSPECT IN OUR GEARSHOP 90 DAY WARRANTY., Serial#: NA, Engine Make: Caterpillar, Engine Model: 3406E ConditionUsedEngine ModelCaterpillar 3406EFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Stock Number51126-10 MLS Number14424372CategoryTransmissions Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 2003 Peterbilt 379 Front Axle Assembly Newly Listed $1,495 USD GOOD USED E1200I FRONT AXLE ASSY COMPLETE OR FOR PARTS., Capacity: 12K, Serial#: 5EK, Hub Bolts: 10, Brake Type: DRUM ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Capacity12KStock Number51126-8 MLS Number14424371CategoryAxle Assemblies, Front Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 2003 Peterbilt 379 Right Fuel Tank Newly Listed $450 USD GOOD USED RH FUEL TANK ASSY. 69X23 HAS SOME SMALL DENTS ON BOTTOM., Dimensions: 69X23, Material: Aluminum, Fuel Tank Shape: Round ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003SideRIGHTStock Number51126-7 MLS Number14424369CategoryFuel Tanks (Truck) Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Eaton RSP40 Rear Differential for a 2003 Peterbilt 379 Newly Listed $695 USD RSP40 3.55 RATIO USED TAKEOUT. WILL INSPECT IN OUR GEARSHOP 90 DAY WARRANTY., Ratio: 355 ConditionUsedRear End3.55 ratioFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Stock Number51126-5 MLS Number14424368CategoryDifferentials, Rear Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer DSP40 Front Differential for a 2003 Peterbilt 379 Newly Listed $1,095 USD DSP40 3.55 RATIO USED TAKEOUT. WILL INSPECT IN OUR GEARSHOP 90 DAY WARRANTY, Ratio: 355 ConditionUsedRear End3.55 ratioFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Stock Number51126-4 MLS Number14424366CategoryDifferentials, Front Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 2003 Peterbilt 379 Front Bumper Newly Listed $595 USD GOOD USED FRONT BUMPER ASSY. ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)2003Stock Number51126-1 MLS Number14424363CategoryBumpers, Front Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos Meritor-Rockwell RR20-145 Rear Differential Newly Listed $1,495 USD REBUILT RR20-145 6.43 12 MONTH PARTS AND LABOR WARRANTY. EXTENDED WARRANTY AVAILABLE., Axle Spline Count: 41, Serial#: 62542, Core Charge: EXCHANGE, Ratio: 6.43 ConditionRemanufacturedPart Number62542Stock Number62542 MLS Number14424362CategoryDifferentials, Rear Last Updated6/13/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info