4 0 Rockwell RS21145 Rear Differential for a Rockwell RS-21-145 $600 USD Good used Rockwell RS-21-145 rear, rear differential assembly. 4.63 ratio. 90 day guarantee for swap or refund ConditionUsedRear End4.63 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/4.63/ MLS Number11424959CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Rockwell RS21145 Rear Differential for a Rockwell RS-21-145 $600 USD Good used Rockwell RS-21-145 rear, rear differential assembly. 5.57 ratio. 90 day guarantee for swap or refund ConditionUsedRear End5.57 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/5.57/ MLS Number10643517CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Rockwell RS21145 Rear Differential for a Rockwell RS-21-145 $600 USD Good used Rockwell RS-21-145 rear, rear differential assembly. 3.58 ratio. 90 day guarantee for swap or refund Quantity-1ConditionUsedRear End3.58 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/3.58/ MLS Number10568084CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Rockwell RS21145 Rear Differential for a Rockwell RS-21-145 $600 USD Good used Rockwell RS-21-145 rear, rear differential assembly. 4.88 ratio. 90 day guarantee for swap or refund ConditionUsedRear End4.88 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/4.88/ MLS Number10643330CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Rockwell RS21145 Rear Differential for a Rockwell RS-21-145 $600 USD Good used Rockwell RS-21-145 rear, rear differential assembly. 5.86 ratio. 90 day guarantee for swap or refund ConditionUsedRear End5.86 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/5.86/ MLS Number11121773CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Rockwell RS21145 Rear Differential for a Rockwell RS-21-145 $600 USD Good used Rockwell RS-21-145 rear, rear differential assembly. 4.11 ratio. 90 day guarantee for swap or refund Quantity2ConditionUsedRear End4.11 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/4.11/ MLS Number10524900CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
1 0 Rockwell RS21145 Rear Differential for a Rockwell RS-21-145 $600 USD Good used Rockwell RS-21-145 rear, rear differential assembly. 5.29 ratio. 90 day guarantee for swap or refund Quantity2ConditionUsedRear End5.29 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/5.29/ MLS Number10310485CategoryDifferentials, Rear Last Updated7/30/2025 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info