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Peterbilt 378 Truck Parts For Sale in United States

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Truck Parts (584)
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Air Intake & Filtration (39)   Air Cleaners / Air Filter Housings (19)   Air Transfer Tubes (20)Air Tanks (13)Axles & Differentials (27)   Axle Assemblies, Front (25)   Spindles / Knuckles (2)Battery Box Covers (2)Battery Boxes / Trays (12)Brakes (3)   Air Dryers (3)Cab, Body & Interior (220)   Back Windows (1)   Bumpers, Front (14)   Cabs (21)   Dashboards (13)   Door Assemblies, Front (20)   Door Mirrors (22)   Door Vent Glass (1)   Door Window Regulators (2)   Door Windows (1)   Doors (35)   Fender Extensions (2)   Fenders (2)   Grilles (2)   Hood Hinges (1)   Hoods (20)   Interior Misc. Parts (11)   Mirrors (5)   Roof Fairings (1)   Seats (7)   Side View Mirrors (13)   Sleeper Doors (6)   Sleepers (4)   Steering Wheels (3)   Sun Visors (13)Cooling & HVAC (58)   A/C Condensers (1)   Blower Motors (HVAC) (2)   Cooling Assemblies (Rad., Cond., ATAAC) (5)   Fan Blades (1)   Fan Clutches (1)   Heater / AC Climate Control Parts (7)   Intercoolers & Charge Air Coolers (9)   Intercoolers (1)   Radiator Overflow Bottles / Surge Tanks (8)   Radiators (23)Electrical & Lighting (32)   Cab Wiring Harnesses (1)   Fuse Boxes & Panels (6)   Gauges (4)   Headlight Assemblies (6)   Radios (3)   Throttle Position Sensors (4)   Windshield Washer Reservoirs (3)   Windshield Wiper Arms (2)   Windshield Wiper Motors (3)Electrical Misc. Parts (1)Exhaust & Emissions (17)   Exhaust Assemblies (4)   Exhaust Brackets (12)   Exhaust Pipes (1)   Exhaust Parts (4)Exterior Misc. Parts (1)Frame & Chassis (24)   Brackets, Misc. (6)   Crossmembers (7)   Deck Plates / Catwalk (1)   Frame Horns (9)   Frames (1)Fuel System (29)   Fuel / Water Separators (1)   Fuel Tank Straps & Brackets (10)   Fuel Tanks (Truck) (18)Hood Parts (8)Hydraulics & PTO (3)   Hydraulic Tanks (3)Instrument Panel Clusters (25)Miscellaneous Truck Parts (3)Power Steering Reservoirs (1)Suspension & Steering (53)   Leaf Springs, Front (12)   Power Steering Assemblies (1)   Spring Hangers (1)   Steering Columns (16)   Steering Gears / Racks (2)   Steering Pumps (1)   Suspension Crossmembers / K-Frames (6)   Suspension Misc. Parts (7)   Suspensions (7)Tool Boxes (8)Truck Bodies / Boxes / Beds (1)Wheels, Tires & Hubs (1)   Mud Flap Hangers (1)
Make
Peterbilt (585)
Model
378 (585)
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Showing 226 - 250 of 585 Listings

226 - 250 of 585 listings
226 - 250 of 585 listings
Peterbilt 378 Air Tank

2004 Peterbilt 378 Air Tank

$224.98 USD
(Used) 2004 Peterbilt 378, AIR TANK- Side: Driver Side, Material: Metal, Front Ports: 1, Rear Ports: 2, Side Ports: 3 Dimensions: Width=32", Height=10", For more information about this item,...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39528
MLS Number11868603
CategoryAir Tanks
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Air Tank

1998 Peterbilt 378 Air Tank

$224.98 USD
(Used) 1998 Peterbilt 378, AIR TANK- Side: Driver Side Material: Aluminum Location: Bottom Dimensions: L=22”, D=9.5”, Front Ports: 2 Rear Ports: 2 Side Ports: 4 Reference images...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1998
Stock NumberP-53905
MLS Number12182937
CategoryAir Tanks
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Air Tank

2001 Peterbilt 378 Air Tank

$224.98 USD
(Used) 2001 Peterbilt 378, AIR TANK- Side: Driver Left Side, Location: Bottom, Material: Steel, Dimensions: L=28", D=9", Front Ports: 2, Rear Ports: 3, For more information about this item...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2001
Stock NumberP-72244
MLS Number12630637
CategoryAir Tanks
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Air Tank

2001 Peterbilt 378 Air Tank

$224.98 USD
(Used) 2001 Peterbilt 378, AIR TANK- Side: Driver Left Side, Location: Bottom, Material: Steel, Dimensions: L= 22", D=9", Front Ports: 2, Rear Ports: 2, Side Ports: 3, For more...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2001
Stock NumberP-72248
MLS Number12630641
CategoryAir Tanks
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Air Tank

2001 Peterbilt 378 Air Tank

$224.98 USD
(Used) 2001 Peterbilt 378, AIR TANK- Side: Rear, Location: Top, Material: Steel, Dimensions: L=35", D=10", Front Ports: 2, Rear Ports: 2, Side Ports: 3, For more information about this...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2001
Stock NumberP-72250
MLS Number12630643
CategoryAir Tanks
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Air Tank

2001 Peterbilt 378 Air Tank

$224.98 USD
(Used) 2001 Peterbilt 378, AIR TANK- Side: Rear, Location: Top, Material: Steel, Dimensions: L=32", D=10", Front Ports: 2, Rear Ports: 2, Side Ports: 3, For more information about this...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2001
Stock NumberP-72251
MLS Number12630644
CategoryAir Tanks
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Air Tank

1996 Peterbilt 378 Air Tank

$224.98 USD
(Used) 1996 Peterbilt 378, AIR TANK (1)- Side: Driver Left Side, Location: Driver Side Outside Frame, Material: Steel, Dimensions: L=31", D=10", Front Ports: 2, Rear Ports: 2, Side Ports:...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1996
Stock NumberP-112370
MLS Number13868821
CategoryAir Tanks
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Air Tank

1996 Peterbilt 378 Air Tank

$224.98 USD
(Used) 1996 Peterbilt 378, AIR TANK (2)- Side: Driver Left Side, Location: Behind The Battery Box, Material: Steel, Dimensions: L=22", D=10", Front Ports: 2, Rear Ports: 2, Side Ports: 4,...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1996
Stock NumberP-112371
MLS Number13868822
CategoryAir Tanks
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Air Tank

1996 Peterbilt 378 Air Tank

$224.98 USD
(Used) 1996 Peterbilt 378, AIR TANK (3)- Side: Passenger Right Side, Location: Passenger Side Outside Frame, Material: Steel, Dimensions: L=31", D=9", Front Ports: 1, Rear Ports: 2, Side...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1996
Stock NumberP-112372
MLS Number13868823
CategoryAir Tanks
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Left Door Window

2007 Peterbilt 378 Left Door Window

$134.99 USD
2007 PETERBILT 378 Used Driver Side Door Glass (Local Pick Up Only) We Ship Worldwide! Call Now For A Shipping Estimate! Make: PETERBILT Model: 378
ConditionUsed
Fits To Make(s)PETERBILT
Fits To Model(s)378
Will Fit Year(s)2007
SideLEFT
Stock Number6590
MLS Number9733019
CategoryDoor Windows
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Radio

2004 Peterbilt 378 Radio

$89.99 USD
(Used) 2004 Peterbilt 378, RADIO- Type: Delphi, Six Presets, Plays: AM/FM, Disc, AUX, Bluetooth, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39582
MLS Number11875167
CategoryRadios
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Sun Visor

1998 Peterbilt 378 Sun Visor

$69.99 USD
(USED) 1998 Peterbilt 378 - Sun Visor - Side Driver Side. Material: Vinyl. Color: Gray. Type: Adjustable/ Sliding. For more information about this item, give us a call. We ship Worldwide!....
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1998
Stock NumberP-24729
MLS Number10827685
CategorySun Visors
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Sun Visor

1998 Peterbilt 378 Sun Visor

$69.99 USD
(USED) 1998 Peterbilt 378 - Sun Visor - Side: Passenger Side. Material: Vinyl. Color: Gray. Type: Adjustable/ Sliding. For more information about this item, give us a call. We ship...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1998
Stock NumberP-24730
MLS Number10827686
CategorySun Visors
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Hydraulic Tank

2004 Peterbilt 378 Hydraulic Tank

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(Used) 2004 Peterbilt 378, HYDRAULIC TANK- Side: Driver Side, Material: Metal, Color: Black, Shape: Rectangular, Dimensions: L=33”, W=19", H=23", Reference images for condition, For more...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39520
MLS Number11868589
CategoryHydraulic Tanks
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Roof Fairing

2004 Peterbilt 378 Roof Fairing

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(Used) 2004 Peterbilt 378, EXTERIOR SUN VISOR- Side: Center Of Truck, Color: Chrome, Material: Chrome, For more information about this item,give us a call. We ship Worldwide! (CRG HEAVY...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39557
MLS Number11868639
CategoryRoof Fairings
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Sun Visor

2004 Peterbilt 378 Sun Visor

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(Used) 2004 Peterbilt 378, SUN VISOR- Side: Driver Side, Color: Brown, Material: Vinyl, Type: Adjustable, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39585
MLS Number11875170
CategorySun Visors
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Sun Visor

2004 Peterbilt 378 Sun Visor

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(Used) 2004 Peterbilt 378, SUN VISOR- Side: Passenger Side, Color: Brown, Material: Vinyl, Type: Adjustable, For more information about this item, give us a call.We ship Worldwide! (CRG...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39586
MLS Number11875171
CategorySun Visors
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Instrument Panel Cluster

2001 Peterbilt 378 Instrument Panel Cluster

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(Used) 2001 Peterbilt 378, INSTRUMENT CLUSTER- Gauges: Fuel Level, Air Pressure, Main Trans Oil Temp, Battery Volts, Manifold PSI, Front Driver Oil Temp, Air Pressure, Exhaust Temp, Rear...
ConditionUsed
Engine ModelCaterpillar C12
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2001
Stock NumberP-47609
MLS Number12038746
CategoryInstrument Panel Clusters
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Crossmember

1998 Peterbilt 378 Crossmember

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(Used) 1998 Peterbilt 378, FRAME RAILS- Side: Driver Left Side, Material: Aluminum, Length: 21' 6", Height: 10 1/2", Width: 3 1/2", 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)1998
Stock NumberP-54207
MLS Number12197202
CategoryCrossmembers
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Crossmember

1998 Peterbilt 378 Crossmember

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(Used) 1998 Peterbilt 378, FRAME RAILS- Side: Passenger Right Side, Material: Aluminum, Length: 21' 6", Height: 10 1/2", Width: 3 1/2", For more information about this item, give us a call...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1998
Stock NumberP-54210
MLS Number12197205
CategoryCrossmembers
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Crossmember

1998 Peterbilt 378 Crossmember

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(Used) 1998 Peterbilt 378, CROSSMEMBER- Location: Front, Material: Aluminum, Dimensions: L=34", H=4", W=5.5", For more information about this item, give us a call. We ship Worldwide! (CRG...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1998
Stock NumberP-54214
MLS Number12197209
CategoryCrossmembers
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Crossmember

1998 Peterbilt 378 Crossmember

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(Used) 1998 Peterbilt 378, CROSSMEMBER- Location: Mid Front, Material: Aluminum, Dimensions: L=34", H=4", W=5.5", For more information about this item, give us a call. We ship Worldwide!...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1998
Stock NumberP-54216
MLS Number12197211
CategoryCrossmembers
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Crossmember

1998 Peterbilt 378 Crossmember

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(Used) 1998 Peterbilt 378, CROSSMEMBER- Location: Rear, Material: Aluminum, Dimensions: L=34", H=4", W=5.5", For more information about this item, give us a call. We ship Worldwide! (CRG...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1998
Stock NumberP-54219
MLS Number12197214
CategoryCrossmembers
Last Updated5/13/2026
Location
Elkton, MD, US
Sold By
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