View 1 Photo View 0 Videos Eaton DS404 Rear Differential Contact for price Good used, Ratio: 3.55 ConditionUsedRear End3.55 ratioStock Number1354 MLS Number10639732CategoryDifferentials, Rear Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 1991 Peterbilt 377 Right Mirror Contact for price GOOD ConditionUsedFits To Make(s)PeterbiltFits To Model(s)377Will Fit Year(s)1991SideRIGHTStock Number303740-10 MLS Number10639731CategoryMirrors Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 1991 Peterbilt 377 Left Mirror Contact for price GOOD ConditionUsedFits To Make(s)PeterbiltFits To Model(s)377Will Fit Year(s)1991SideLEFTStock Number303740-9 MLS Number10639730CategoryMirrors Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 1991 Peterbilt 377 Right Door Contact for price GOOD SHAPE ConditionUsedFits To Make(s)PeterbiltFits To Model(s)377Will Fit Year(s)1991SideRIGHTStock Number303740-8 MLS Number10639729CategoryDoors Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 1991 Peterbilt 377 Suspension Contact for price AIR LEAF ConditionUsedFits To Make(s)PeterbiltFits To Model(s)377Will Fit Year(s)1991Stock Number303740-6 MLS Number10639727CategorySuspensions Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer RS402 Rear Differential for a 1991 Peterbilt 377 Contact for price GOOD SHAPE, Ratio: 370 ConditionUsedRear End3.70 ratioFits To Make(s)PeterbiltFits To Model(s)377Will Fit Year(s)1991Stock Number303740-5 MLS Number10639726CategoryDifferentials, Rear Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer DS402 Front Differential for a 1991 Peterbilt 377 Contact for price GOOD SHAPE, Ratio: 370 ConditionUsedRear End3.70 ratioFits To Make(s)PeterbiltFits To Model(s)377Will Fit Year(s)1991Stock Number303740-4 MLS Number10639725CategoryDifferentials, Front Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 1990 Mack RD688S Front Bumper Contact for price RUSTY ConditionUsedFits To Make(s)MackFits To Model(s)RD688SWill Fit Year(s)1990Stock Number008579-7 MLS Number10639720CategoryBumpers, Front Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 1990 Mack RD688S Right Door Contact for price RUSTY DOOR GOOD PART'S ConditionUsedFits To Make(s)MackFits To Model(s)RD688SWill Fit Year(s)1990SideRIGHTStock Number008579-6 MLS Number10639719CategoryDoors Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Mack CRD92-93 Front Differential for a 1990 Mack RD688S Contact for price GOOD SHAPE, Ratio: N/A ConditionUsedFits To Make(s)MackFits To Model(s)RD688SWill Fit Year(s)1990Stock Number008579-4 MLS Number10639717CategoryDifferentials, Front Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 1990 Mack RD688S Front Axle Assembly Contact for price TAG MISSING PASSENGER SIDE KING PIN BAD, Hub Bolts: BUD ConditionUsedFits To Make(s)MackFits To Model(s)RD688SWill Fit Year(s)1990Stock Number008579-3 MLS Number10639716CategoryAxle Assemblies, Front Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Mack E7-400 Engine Core for a 1990 Mack RD688S Contact for price TURN'S 360, Serial#: 9Z0070, Horse Power: 400, Casting#: 9Z0070 ConditionUsedHorse Power400 HPFits To Make(s)MackFits To Model(s)RD688SWill Fit Year(s)1990Stock Number008579-1 MLS Number10639714CategoryEngine Cores Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos TRW/ROSS Steering Gear / Rack for a 1981 Ford L SERIES Contact for price GOOD SHAPE, Serial#: N/A., Casting#: N/A. ConditionUsedFits To Make(s)FordFits To Model(s)L SERIESWill Fit Year(s)1981Stock NumberJ19437-10 MLS Number10639713CategorySteering Gears / Racks Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 1981 Ford L Series Right Mirror Contact for price GOOD ConditionUsedFits To Make(s)FordFits To Model(s)L SERIESWill Fit Year(s)1981SideRIGHTStock NumberJ19437-8 MLS Number10639711CategoryMirrors Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 1981 Ford L Series Suspension Contact for price HENDRICKSON ConditionUsedFits To Make(s)FordFits To Model(s)L SERIESWill Fit Year(s)1981Stock NumberJ19437-6 MLS Number10639709CategorySuspensions Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Meritor-Rockwell SQHD Rear Differential for a 1981 Ford L SERIES Contact for price GOOD SHAPE, Ratio: 411 ConditionUsedRear End4.11 ratioFits To Make(s)FordFits To Model(s)L SERIESWill Fit Year(s)1981Stock NumberJ19437-5 MLS Number10639708CategoryDifferentials, Rear Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Meritor-Rockwell SQHD Front Differential for a 1981 Ford L SERIES Contact for price GOOD SHAPE, Ratio: 411 ConditionUsedRear End4.11 ratioFits To Make(s)FordFits To Model(s)L SERIESWill Fit Year(s)1981Stock NumberJ19437-4 MLS Number10639707CategoryDifferentials, Front Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 1981 Ford L Series Front Axle Assembly Contact for price TAG MISSING DRIVER SIDE KING 'PIN S BAD, Hub Bolts: BUD, Axle Make: N/A, Axle Model: N/A ConditionUsedFits To Make(s)FordFits To Model(s)L SERIESWill Fit Year(s)1981Stock NumberJ19437-3 MLS Number10639706CategoryAxle Assemblies, Front Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 2001 Tag Missing Good Shape Contact for price TAG MISSING GOOD SHAPE ConditionUsedFits To Make(s)SterlingFits To Model(s)ACTERRAWill Fit Year(s)2001Stock NumberK04223-15 MLS Number10626572CategoryTag / Pusher Axles Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 1996 Peterbilt 379 Right Door Contact for price GOOD DOOR ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)1996SideRIGHTStock Number417565-10 MLS Number10626570CategoryDoors Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos 1996 Peterbilt 379 Left Door Contact for price MISSING INSIDE PIECE HAS DAMAGE ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)1996SideLEFTStock Number417565-9 MLS Number10626569CategoryDoors Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 1996 Peterbilt 379 Suspension Contact for price AIR LEAF ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)1996Stock Number417565-8 MLS Number10626568CategorySuspensions Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 1996 Peterbilt 379 Left Mirror Contact for price GOOD ConditionUsedFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)1996SideLEFTStock Number417565-6 MLS Number10626567CategoryMirrors Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer RS404 Rear Differential for a 1996 Peterbilt 379 Contact for price GOOD SHAPE, Ratio: 370 ConditionUsedRear End3.70 ratioFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)1996Stock Number417565-3 MLS Number10626564CategoryDifferentials, Rear Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Dana-Spicer RS404 Front Differential for a 1996 Peterbilt 379 Contact for price GOOD SHAPE, Ratio: 370 ConditionUsedRear End3.70 ratioFits To Make(s)PeterbiltFits To Model(s)379Will Fit Year(s)1996Stock Number417565-2 MLS Number10626563CategoryDifferentials, Front Last Updated5/14/2026 LocationFarr West, UT, US Sold ByRocky Mountain Truck Parts (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info