View 1 Photo View 0 Videos Rockwell RS21145 Rear Differential for a Rockwell RS-21-145 $500 USD Good used Rockwell RS-21-145 rear, rear differential assembly. 5.29 ratio. 90 day guarantee for swap or refund ConditionUsedRear End5.29 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/5.29/ MLS Number10310485CategoryDifferentials, Rear Last Updated3/2/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 2009 Rockwell RS21145 Rear Axle Housing for a Mack CXU613 $1,500 USD OEM E16 3121P1966 ConditionUsedFits To Make(s)MACKFits To Model(s)CXU613Stock Number7158 MLS Number10893319CategoryAxle Housings, Rear Last Updated2/20/2026 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 2011 Rockwell RS21145 Rear Axle Housing for a Freightliner M2 106 Medium Duty $1,500 USD OEM# C34 3121P1966 (S), GOOD CONDITION USED REAR/REAR AXLE HOUSING ConditionUsedFits To Make(s)FREIGHTLINERFits To Model(s)M2 106 Medium DutyStock Number2925 MLS Number10892091CategoryAxle Housings, Rear Last Updated2/10/2026 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 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 ConditionUsedRear End3.58 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/3.58/ MLS Number10568084CategoryDifferentials, Rear Last Updated1/15/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 2008 Rockwell RS21145 Rear Axle Housing for a Blue Bird N/A $1,500 USD Good condition Used Blue Bird bus rear axle housing RS21145NFNN799 ConditionUsedSuspensionSpringFits To Make(s)BLUE BIRDFits To Model(s)N/AStock Number12582 MLS Number10895029CategoryAxle Housings, Rear Last Updated1/15/2026 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 1999 Rockwell RS21145 Rear Axle Housing for a Sterling A9513 $1,500 USD OEM# C4 3121P1966 (S) ConditionUsedSuspensionSpringFits To Make(s)STERLINGFits To Model(s)A9513Stock Number8740 MLS Number10893596CategoryAxle Housings, Rear Last Updated1/13/2026 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos 2000 Rockwell RS21145 Rear Axle Housing for a Sterling L7500 SERIES $1,500 USD OEM C34 3121P1966 (S) ConditionUsedSuspensionSpringFits To Make(s)STERLINGFits To Model(s)L7500 SERIESStock Number6289 MLS Number10893082CategoryAxle Housings, Rear Last Updated1/13/2026 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 2004 Rockwell RS21145 Front Axle Housing for a International 9100I $1,500 USD MERITOR OEM#C21 3121M1729S, INTERNATIONAL OEM: 2585050C1 GOOD CONDITION USED FRONT/REAR AXLE HOUSING ConditionUsedFits To Make(s)INTERNATIONALFits To Model(s)9100IStock Number2407 MLS Number10892036CategoryAxle Housings, Front Last Updated1/13/2026 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 8 Photos View 0 Videos 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 Quantity2ConditionUsedRear End4.63 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/4.63/ MLS Number11424959CategoryDifferentials, Rear Last Updated1/9/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 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 Quantity2ConditionUsedRear End5.57 ratioFits To Make(s)ROCKWELLFits To Model(s)RS-21-145Stock NumberRyd RS-21-145/5.57/ MLS Number10643517CategoryDifferentials, Rear Last Updated1/6/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Rockwell RS21145 Rear Differential for a Rockwell RS-21-145 $500 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 Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Rockwell RS21145 Rear Differential for a Rockwell RS-21-145 $500 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 Updated1/1/2026 LocationFitchburg, MA, US Sold ByRydemore Heavy Duty Truck Parts (888) 519-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Rockwell RS21145 Rear Axle Housing $1,500 USD OEM # C73121P1966 ConditionUsedStock Number12367 MLS Number10894883CategoryAxle Housings, Rear Last Updated8/31/2025 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Rockwell RS21145 Rear Axle Housing for a Ford $1,500 USD OEM # C 3121 B2290 ConditionUsedFits To Make(s)FORDStock Number12354 MLS Number10894873CategoryAxle Housings, Rear Last Updated8/31/2025 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Rockwell RS21145 Rear Axle Housing for a Ford $1,500 USD OEM# C7 312P1966 ConditionUsedFits To Make(s)FORDStock Number12353 MLS Number10894872CategoryAxle Housings, Rear Last Updated8/31/2025 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 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
View 3 Photos View 0 Videos 2004 Rockwell RS21145 Rear Axle Housing for a Freightliner M2 106 Medium Duty $1,500 USD OEM# C5 3121E1747 / C34 3121P1966S ConditionUsedSuspensionSpringFits To Make(s)FREIGHTLINERFits To Model(s)M2 106 Medium DutyStock Number16210 MLS Number13195962CategoryAxle Housings, Rear Last Updated12/18/2024 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos 2004 Rockwell RS21145 Rear Axle Housing for a Freightliner M2 106 Medium Duty $1,500 USD OEM# C34 3121P1966S USED REAR/REAR AXLE HOUSING ConditionUsedSuspensionSpringFits To Make(s)FREIGHTLINERFits To Model(s)M2 106 Medium DutyStock Number15423 MLS Number12274794CategoryAxle Housings, Rear Last Updated12/18/2024 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 2005 Rockwell RS21145 Rear Differential $455 USD 6 Month Warranty,RS21-145 ,4.88,1610,NOTES,T10, ************PUSHER APP ONLY**************** 39 SPLINE SIDE GEARS 3200-R-1864 ConditionUsedStock NumberR05787328 MLS Number13092966CategoryDifferentials, Rear Last Updated9/5/2024 LocationSpokane Valley, WA, US Sold BySpalding Truck Parts (833) 432-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos 2004 Rockwell RS21145 Rear Differential $450 USD 6 Month Warranty,RS21145,4.11,NOYK,T6, SAME AS RR20-145 ConditionUsedStock NumberR05337725 MLS Number13092947CategoryDifferentials, Rear Last Updated9/5/2024 LocationSpokane Valley, WA, US Sold BySpalding Truck Parts (833) 432-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 3 Photos View 0 Videos 2001 Rockwell RS21145 Front Differential for a Ford F750 $800 USD GOOD USED MERITOR-ROCKWELL REAR REAR DIFFERENTIAL ASSEMBLY PN# RS21145 5.57 RATIO ConditionUsedFits To Make(s)FordFits To Model(s)F750Stock Number141980 MLS Number11139588CategoryDifferentials, Front Last Updated5/21/2022 LocationOil City, LA, US Sold ByBobby Johnson Equipment Co., Inc. (855) 946-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 2 Photos View 0 Videos Rockwell RS21145 Rear Differential for a Ford F750 $1,250 USD ROCKWELL REAR REAR, MOD: RS21145, SN AVA97065348, RATIO: 5.13 ConditionUsedFits To Make(s)FordFits To Model(s)F750Stock Number47916 MLS Number11137662CategoryDifferentials, Rear Last Updated12/13/2021 LocationOil City, LA, US Sold ByBobby Johnson Equipment Co., Inc. (855) 946-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Rockwell RS21145 Rear Differential Contact for price ROCKWELL RS21145 HIGH TRACTION DIFFERENTIAL RATIO 5.86 ConditionUsedStock Number1381169 MLS Number10895682CategoryDifferentials, Rear Last Updated8/5/2021 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos Rockwell RS21145 Front Differential Contact for price ROCKWELL RS21145 HIGH TRACTION RATIO 5.86 ConditionUsedStock Number1381167 MLS Number10895680CategoryDifferentials, Front Last Updated8/5/2021 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos Rockwell RS21145 Rear Axle Housing $1,500 USD OEM# C22 3121L1728 ConditionUsedStock Number12502 MLS Number10894974CategoryAxle Housings, Rear Last Updated8/5/2021 LocationEnfield, CT, US Sold ByCamerota Truck Parts (855) 750-___ SHOWNUMBERCall Seller Email Seller Save More Info