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Peterbilt 378 Axles & Differentials For Sale

Shop used Peterbilt 378 Axles & Differentials on MyLittleSalesman.com . Compare active listings with prices from $850 to $5,500. Sellers include Holst Truck Parts, Rocky Mountain Truck Parts, CRG Heavy Truck Parts, and more. Filter by condition, price, or year to find the Peterbilt 378 that fits your job.
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Truck Parts (42)
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Axles & Differentials (42)
   Axle Assemblies, Front (40)    Spindles / Knuckles (2)
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Peterbilt (42)
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378 (42)
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Used (42)
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Showing 1 - 25 of 42 Listings

1 - 25 of 42 listings
1 - 25 of 42 listings
Peterbilt 378 Front Axle Assembly

1993 Peterbilt 378 Front Axle Assembly

$3,500 USD
GOOD USED COMPLETE 20K FRONT AXLE ASSY. COMES WITH SPRINGS AND STEERING BOX, Capacity: 20K, Hub Bolts: 10/BUDD, Brake Type: DRUM, Axle Make: SPICER
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1993
Capacity20K
Stock Number41226-6
MLS Number14330541
CategoryAxle Assemblies, Front
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Peterbilt 378 Front Axle Assembly

2006 Peterbilt 378 Front Axle Assembly

$5,500 USD
20K FRONT AXLE CONVERSION/ASSY. DUAL GEARBOXES LH#M110PHM14 RH# M905AD17., Capacity: 20K, Hub Bolts: 10, Brake Type: AIR, Axle Make: SPICER
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2006
Capacity20K
Stock Number11026-5
MLS Number14091626
CategoryAxle Assemblies, Front
Last Updated5/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Peterbilt 378 Front Axle Assembly

2003 Peterbilt 378 Front Axle Assembly

$1,495 USD
USED AXLE ASSEMBLY OR PARTS SEALED BEARING HUB ASSEMBLY $350.00 SPINDLE $450.00, Serial#: 6NZ, Hub Bolts: 10, Brake Type: S CAM, Axle Make: ROCKWELL
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2003
Part NumberFF985
Stock Number40622-12
MLS Number11346686
CategoryAxle Assemblies, Front
Last Updated5/14/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Peterbilt 378 Front Axle Assembly

2004 Peterbilt 378 Front Axle Assembly

$2,950 USD
(Used) 2004 Peterbilt 378, COMPLETE FRONT AXLE- Make: Eaton, Model: EFA18F3, Capacity: 18,740 lbs, Hub Bolts: 10, Brake Type: Drum, For more information about this item, give us a call.We...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Capacity18,740
Stock NumberP-39515
MLS Number11868581
CategoryAxle Assemblies, Front
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
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CRG Heavy Truck Parts
Peterbilt 378 Front Axle Assembly

2004 Peterbilt 378 Front Axle Assembly

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Eaton EFA20F4 Front Steer Axle For Sale - Hub to Hub - Used - May have some cosmetic blemishes (see photos). Give us a shout by phone, email, or text. We ship everywhere., Serial#: EFA20F4,...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Capacity20000
Stock NumberPT-0653-3
MLS Number10830690
CategoryAxle Assemblies, Front
Last Updated5/14/2026
Location
York, ON, Canada
Sold By
Lomoca Inc.
(833) 835-___  SHOW
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Lomoca Inc.
Peterbilt 378 Front Axle Assembly

2005 Peterbilt 378 Front Axle Assembly

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Dana Spicer E1462I Front Steer Axle For Sale - Hub to Hub - Used - May have some cosmetic blemishes (see photos). Give us a shout by phone, email, or text. We ship everywhere., Capacity:...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2005
Capacity14600
Stock NumberPT-0625-28
MLS Number13165925
CategoryAxle Assemblies, Front
Last Updated5/14/2026
Location
York, ON, Canada
Sold By
Lomoca Inc.
(833) 835-___  SHOW
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Lomoca Inc.
Peterbilt 378 Front Axle Assembly

1996 Peterbilt 378 Front Axle Assembly

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(Used) 1996 Peterbilt 378, COMPLETE FRONT AXLE- Part Number: 813955, Serial Number: H-95-07-35517, Center Leaf to Center Leaf: 34", Make: Eaton, Model: 12F4, Capacity: 12,000 Lbs, Hub...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1996
Capacity12,000 Lbs
Part Number813955
Stock NumberP-112328
MLS Number13867890
CategoryAxle Assemblies, Front
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
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CRG Heavy Truck Parts
Peterbilt 378 Left Spindle

1996 Peterbilt 378 Left Spindle

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(Used) 1996 Peterbilt 378, FRONT SPINDLE/KNUCKLE- Part Number: 813955, Serial Number: H-95-07-35517, Side: Driver Left Side, Make: Eaton, Model: 12F4, Capacity: 12,000 Lbs, Hub Bolts: 10,...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1996
SideLEFT
Capacity12,000 Lbs
Part Number813955
Stock NumberP-112334
MLS Number13867896
CategorySpindles / Knuckles
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
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CRG Heavy Truck Parts
Peterbilt 378 Right Spindle

1996 Peterbilt 378 Right Spindle

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(Used) 1996 Peterbilt 378, FRONT SPINDLE/KNUCKLE- Part Number: 813955, Serial Number: H-95-07-35517, Side: Passenger Right Side, Make: Eaton, Model: 12F4, Capacity: 12,000 Lbs, Hub Bolts:...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1996
SideRIGHT
Capacity12,000 Lbs
Part Number813955
Stock NumberP-112335
MLS Number13867897
CategorySpindles / Knuckles
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
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