Frontier Truck Parts Meritor Axles & Differentials For Sale

Frontier Truck Parts
4363 Walnut Dale Dr.
Dorr, MI 49323
United States
(855) 300-2939

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Differentials, Rear

Axle Shafts

Axle Housings, Rear

Axle Assemblies, Front

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176 - 200 of 502 listings

2011 Reconditioned Meritor RR-20-145 Air Ride Axle Housing

$1,995 USD

Reconditioned RR-20-145 Air Ride Axle Housing, Position: Rear

Condition	Remanufactured
Fits To Make(s)	International
Fits To Model(s)	Prostar
Will Fit Year(s)	2011
Part Number	3121P1966
Stock Number	300-22472
MLS Number	14124328
Category	Axle Housings
Last Updated	2/27/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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1996 Reconditioned Meritor RR-20-145 Air Leaf Axle Housing

$2,150 USD

Reconditioned Meritor RR-20-145 Air Leaf Axle Housing, Position: Rear

Condition	Remanufactured
Fits To Make(s)	Meritor
Fits To Model(s)	RR-20-145
Will Fit Year(s)	1996
Part Number	3121E1747
Stock Number	300-26981
MLS Number	14123038
Category	Axle Housings
Last Updated	2/27/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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Reconditioned Meritor RD-20-145 Air Ride Axle Housing

$2,150 USD

Reconditioned Meritor RD-20-145 Air Ride Axle Housing, Position: Front

Condition	Remanufactured
Fits To Make(s)	Meritor
Fits To Model(s)	MD2014X
Part Number	3121L3678
Stock Number	300-26991
MLS Number	14123037
Category	Axle Housings
Last Updated	2/27/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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1999 Used Meritor RR20145 Differential - Ratio 4.33 - Non-Locker

$795 USD

Used RR20145 Differential - Ratio 4.33 - Non-Locker

Condition	Used
Fits To Make(s)	Meritor
Fits To Model(s)	RR-20-145
Will Fit Year(s)	1999
Part Number	3200S1865
Stock Number	700-15371
MLS Number	14119349
Category	Differentials, Unspecified
Last Updated	6/13/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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2002 Used Meritor RS21145 Differential - Ratio: 4.33 - Non-Locker

$795 USD

Used RS21145 Differential - Ratio: 4.33 - Non-Locker

Condition	Used
Fits To Make(s)	Meritor
Fits To Model(s)	RS-21-145
Will Fit Year(s)	2002
Part Number	B43200S1865
Stock Number	700-15372
MLS Number	14119348
Category	Differentials, Unspecified
Last Updated	2/27/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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NTO Meritor Driver Side Spindle

$795 USD

NTO Meritor Driver Side Spindle, Side: Driver, ABS: Yes

Quantity	5
Condition	New
Fits To Make(s)	Meritor
Fits To Model(s)	MFS12143ANN157
Side	Driver
Part Number	A3111Y3301
Stock Number	401-20973
MLS Number	13994591
Category	Spindles / Knuckles
Last Updated	4/16/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor RD-20-145 T Bar Axle Housing

$2,850 USD

New RD-20-145 T Bar Axle Housing, Position: Front

Condition	New
Fits To Make(s)	Meritor
Fits To Model(s)	MD2014X
Part Number	3121T3920
Stock Number	300-26958
MLS Number	14086560
Category	Axle Housings
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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Reconditioned Meritor RR-20-145 Air Leaf Axle Housing

$2,150 USD

Reconditioned RR-20-145 Air Leaf Axle Housing, Position: Rear

Condition	Remanufactured
Part Number	3121E1747
Stock Number	300-26930
MLS Number	14107541
Category	Axle Housings
Last Updated	2/27/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor RH Spindle

$1,081.29 USD

New Meritor RH Spindle, Side: Passenger, ABS: Yes

Condition	New
Side	Passenger
Part Number	A3111C3513
Stock Number	401-20997
MLS Number	13998351
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor LH Spindle

$720.36 USD

New Meritor LH Spindle, Side: Driver, ABS: Yes

Condition	New
Side	Driver
Part Number	A3111J4378
Stock Number	401-20885
MLS Number	13868507
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor LH Spindle

$630.60 USD

New Meritor LH Spindle, Side: Driver, ABS: Yes

Condition	New
Side	Driver
Part Number	A3111C4371
Stock Number	401-20882
MLS Number	13868505
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor RH Spindle

$1,315.82 USD

New Meritor RH Spindle, Side: Passenger, ABS: Yes

Condition	New
Side	Passenger
Part Number	A3111B3304
Stock Number	401-20825
MLS Number	13789086
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor LH Spindle

$1,356.97 USD

New Meritor LH Spindle, Side: Driver, ABS: Yes

Condition	New
Side	Driver
Part Number	A3111A3303
Stock Number	401-20821
MLS Number	13789082
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor RH Spindle

$1,529.94 USD

New Meritor RH Spindle, Side: Passenger, ABS: Yes

Condition	New
Side	Passenger
Part Number	KIT1462
Stock Number	401-20604
MLS Number	13557775
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor LH Spindle

$1,340.15 USD

New Meritor LH Spindle, Side: Driver, ABS: Yes

Condition	New
Side	Driver
Part Number	A3111Y3301
Stock Number	401-20585
MLS Number	14080526
Category	Spindles / Knuckles
Last Updated	4/16/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor LH Spindle

$684.54 USD

New Meritor LH Spindle, Side: Driver, ABS: Yes

Condition	New
Side	Driver
Part Number	A3111E4373
Stock Number	401-20542
MLS Number	13516216
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor RH Spindle

$870.49 USD

New Meritor RH Spindle, Side: Passenger, ABS: Yes

Condition	New
Side	Passenger
Part Number	A3111T4388
Stock Number	401-20276
MLS Number	13251443
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor RH Spindle

$737.07 USD

New Meritor RH Spindle, Side: Passenger, ABS: Yes

Condition	New
Side	Passenger
Part Number	A13111R3788
Stock Number	401-20270
MLS Number	13251442
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor RH Spindle

$595 USD

New Meritor RH Spindle, Side: Passenger, ABS: Yes

Condition	New
Side	Passenger
Part Number	A3111F4660
Stock Number	401-20273
MLS Number	13254103
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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2020 Used Meritor

$351 USD

Used Meritor, Side: Passenger, ABS: Yes

Condition	Used
Fits To Make(s)	Meritor
Will Fit Year(s)	2020
Side	Passenger
Part Number	A3111F4660
Stock Number	401-20257
MLS Number	13256888
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor RH Spindle

$1,303.11 USD

New Meritor RH Spindle, Side: Passenger

Condition	New
Side	Passenger
Part Number	A213111J2298
Stock Number	401-19951
MLS Number	12959329
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor LH Spindle

$563.47 USD

New Meritor LH Spindle, Side: Driver, ABS: Yes

Condition	New
Side	Driver
Part Number	A13111N3784
Stock Number	401-19750
MLS Number	12669692
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor RH Spindle

$614.98 USD

New Meritor RH Spindle, Side: Passenger, ABS: Yes

Condition	New
Side	Passenger
Part Number	A13111P3786
Stock Number	401-19751
MLS Number	12669691
Category	Spindles / Knuckles
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor MFS14 Front Steer Axle Assembly

$3,200 USD

New MFS14 Front Steer Axle Assembly, LH Spindle: A3111D4970, RH Spindle: A3111E4971, Hubs: None, Center to Center: 33

Condition	New
Part Number	MFS14142BNN1
Stock Number	400-25512
MLS Number	12370801
Category	Axle Assemblies, Front
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

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New Meritor MFS12143ANN24 Front Steer Axle

$3,200 USD

New MFS12143ANN24 Front Steer Axle, LH Spindle: A3111L4666, RH Spindle: A3111T4726, Hubs: None, Center to Center: 35"

Condition	New
Part Number	MFS12143ANN424
Stock Number	400-25504
MLS Number	12370799
Category	Axle Assemblies, Front
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts