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Peterbilt 378 Truck Parts For Sale

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A/C Compressors (1)A/C Condensers (3)A/V Equipment (4)   Radios (4)ABS Control Modules (2)Air Cleaners / Air Filter Housings (24)Air Dryers (3)Air Tanks (22)Air Transfer Tubes (8)Axle Assemblies, Front (41)Back Windows (1)Battery Box Covers (2)Battery Boxes / Trays (19)Blower Motors (HVAC) (2)Body / Chassis Control Modules (1)Body Misc. Parts (1)Brackets, Misc. (8)Brake Parts (1)Bumper Guards (1)Bumpers, Front (11)Cab Exterior Panels (2)Cab Mounts (6)Cabs (28)Coolant Tubes (1)Cooling Assemblies (Rad., Cond., ATAAC) (4)Crossmembers (11)Dashboards (11)Deck Plates / Catwalk (2)Diesel Exhaust Fluid (DEF) Tanks (1)Door Electrical Switches (1)Door Mirrors (12)Door Vent Glass (1)Door Window Regulators (2)Door Windows (1)Doors (57)   Door Assemblies, Front (13)Driveshaft Parts (2)Driveshafts (7)Electrical Misc. Parts (1)Engine Parts (6)   Engine Mounts (5)   Intercoolers (1)Exhaust Parts (17)   Exhaust Assemblies (4)   Exhaust Brackets (6)   Exhaust Pipes (2)   Exhaust Stacks (1)Exterior Misc. Parts (14)Fairings (1)   Roof Fairings (1)Fan Blades (1)Fan Clutches (1)Fender Extensions (4)Fenders (2)Fifth Wheels (1)Frame Horns (9)Frames (2)Fuel / Water Separators (1)Fuel Tank Straps & Brackets (12)Fuel Tanks (Truck) (34)Fuse Boxes & Panels (2)Gauges (1)Grilles (2)Headlight Assemblies (4)Heater / AC Climate Control Parts (12)Hood Parts (14)   Hood Brackets (2)   Hood Hinges (3)Hoods (31)Hydraulic Tanks (3)Instrument Panel Clusters (31)Intercoolers & Charge Air Coolers (11)Interior Misc. Parts (21)Leaf Springs, Front (12)Leaf Springs, Rear (1)Mirrors (5)Miscellaneous Truck Parts (9)Mud Flap Hangers (1)Parking Lamps / Turn Signals (1)Power Steering Assemblies (1)Power Steering Reservoirs (2)Radiator Frames (1)Radiator Overflow Bottles / Surge Tanks (8)Radiator Shrouds (3)Radiators (32)Seats (9)Side Marker Lamps (1)Side View Mirrors (13)Sleeper Parts (10)   Sleeper Doors (6)   Sleeper Windows (4)Sleepers (5)Spindles / Knuckles (3)Spring Hangers (2)Steering Columns (18)Steering Gears / Racks (3)Steering Pumps (1)Steering Shafts (1)Steering Wheels (3)Steps (Frame, Fuel Tank, Fairing) (3)Sun Visors (Exterior) (4)Sun Visors (Interior) (4)Sun Visors (16)Suspension Crossmembers / K-Frames (8)Suspension Misc. Parts (9)Suspensions (6)Throttle Position Sensors (4)Tool Boxes (13)Truck Bodies / Boxes / Beds (1)Windshield Washer Reservoirs (6)Windshield Wiper Arms (2)Windshield Wiper Motors (3)
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Peterbilt (766)
Model
378 (766)
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Showing 426 - 450 of 766 Listings

426 - 450 of 766 listings
426 - 450 of 766 listings
Peterbilt 378 Front Leaf Spring

2004 Peterbilt 378 Front Leaf Spring

$499.99 USD
(Used) 2004 Peterbilt 378, FRONT LEAF SPRING- Side: Passenger Side, 18k front axle Material: Steel, Leaf Quantity: 5, Damage, Front Shock Bracket Broken, For more information about this item...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Part Number18,000
Stock NumberP-39563
MLS Number11868646
CategoryLeaf Springs, Front
Last Updated1/12/2024
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Front Leaf Spring

2004 Peterbilt 378 Front Leaf Spring

$499.99 USD
(Used) 2004 Peterbilt 378, FRONT LEAF SPRING- Side: Driver Side, Material: Steel, 18,000 lb front axle 18k Leaf Quantity: 5, 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)2004
Part Number18000
Stock NumberP-39562
MLS Number11868645
CategoryLeaf Springs, Front
Last Updated1/12/2024
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Peterbilt 378 Right Door

2004 Peterbilt 378 Right Door

$749.98 USD
(Used) 2004 Peterbilt 378, DOOR- Side: Passenger Side, Color: Red, Window Controls: Manual, Less Interior Panel, Side View Mirror Sold Separately, For more information about this item, give...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
SideRIGHT
Stock NumberP-39560
MLS Number11868643
CategoryDoors
Last Updated12/2/2025
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Left Door

2004 Peterbilt 378 Left Door

$749.98 USD
(Used) 2004 Peterbilt 378, DOOR- Side: Driver Side, Color: Red, Window Controls: Manual, Less Interior Panel, Side View Mirror Sold Separately, For more information about this item, give us...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
SideLEFT
Stock NumberP-39559
MLS Number11868641
CategoryDoors
Last Updated12/2/2025
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 Updated12/18/2023
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Front Bumper

2004 Peterbilt 378 Front Bumper

$688.98 USD
(Used) 2004 Peterbilt 378, BUMPER- Color: Silver, Material: Chrome And Aluminum, Dimensions: L=90",H=12", Broken!! Reference image for condition. For more information about this item, give...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39542
MLS Number11868623
CategoryBumpers, Front
Last Updated11/13/2025
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Hood

2004 Peterbilt 378 Hood

$4,950 USD
(Used) 2004 Peterbilt 378, HOOD ASSEMBLY- Length: 61”, from cowl to grille Color: Red, Material: Fiberglass Grille has 2 dents and some fiberglass damage on fender Repairable damages,...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39539
MLS Number11868620
CategoryHoods
Last Updated12/18/2023
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Radiator Overflow Bottle / Surge Tank

2004 Peterbilt 378 Radiator Overflow Bottle / Surge Tank

$295 USD
(Used) 2004 Peterbilt 378, RADIATOR OVERFLOW BOTTLE- Engine: Caterpillar C15, Location: Passenger Side, Material: Metal, Dimensions: Width=14", Height=8", For more information about this...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39536
MLS Number11868617
CategoryRadiator Overflow Bottles / Surge Tanks
Last Updated12/18/2023
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Air Dryer

2004 Peterbilt 378 Air Dryer

$395 USD
(Used) 2004 Peterbilt 378, AIR Dryer Make: Bendix, Material: Metal, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON,...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39531
MLS Number11868609
CategoryAir Dryers
Last Updated12/18/2023
Location
Elkton, MD, US
Sold By
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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 Updated11/18/2025
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Battery Box Cover

2004 Peterbilt 378 Battery Box Cover

$225 USD
(Used) 2004 Peterbilt 378, BATTERY BOX COVER- Side: Driver Side, Capacity: 3 Batteries, Material: Aluminum, Dimensions: Length=30.5", Width=16", For more information about this item, give us...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
Stock NumberP-39527
MLS Number11868602
CategoryBattery Box Covers
Last Updated12/18/2023
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Battery Box

2004 Peterbilt 378 Battery Box

$225 USD
(Used) 2004 Peterbilt 378, BATTERY BOX- Side: Driver Side, Capacity: 3 Batteries, Material: Aluminum, Dimensions: Length=30", Width=23", 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)2004
Stock NumberP-39526
MLS Number11868599
CategoryBattery Boxes / Trays
Last Updated12/18/2023
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 Updated5/18/2025
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Right Fuel Tank

2004 Peterbilt 378 Right Fuel Tank

$899.98 USD
(Used) 2004 Peterbilt 378, FUEL TANK- Side: Passenger Side, Capacity: N/A Material: Aluminum, Shape: Cylinder, Dimensions: L=43.5", D=26", the tank is bent, see photos Reference images for...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2004
SideRIGHT
Stock NumberP-39518
MLS Number11868585
CategoryFuel Tanks (Truck)
Last Updated2/5/2026
Location
Elkton, MD, US
Sold By
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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 Updated9/30/2025
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Exterior Truck Part

1998 Peterbilt 378 Exterior Truck Part

$399.99 USD
(USED) 1998 Peterbilt 378 - Air Filter - Side: Passenger Side. Color: Green/ Chrome. Material: Steel. 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)1998
Stock NumberP-24766
MLS Number10830823
CategoryExterior Misc. Parts
Last Updated12/18/2023
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 Updated12/18/2023
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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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 Updated12/18/2023
Location
Elkton, MD, US
Sold By
CRG Heavy Truck Parts
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Peterbilt 378 Cab Assembly

1998 Peterbilt 378 Cab Assembly

$5,250 USD
(USED) 1998 Peterbilt 378 - Cab - Color Exterior: Green Color Interior: Gray. *Less Doors, Less Interiors. For more information about this item, give us a call. We ship Worldwide!. (CRG...
ConditionUsed
Engine ModelDetroit SERIES 60
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1998
Stock NumberP-24728
MLS Number10827684
CategoryCabs
Last Updated12/18/2023
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Left Side View Mirror

1998 Peterbilt 378 Left Side View Mirror

$324.98 USD
(USED) 1998 Peterbilt 378 - Side View Mirror - Side: Driver Side. Material: Aluminum. Type: Manual Adjustable/ Heated. Mounts: 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
SideLEFT
Stock NumberP-24723
MLS Number10827680
CategorySide View Mirrors
Last Updated10/30/2025
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 Updated12/18/2023
Location
Elkton, MD, US
Sold By
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Peterbilt 378 Engine Mount

2001 Peterbilt 378 Engine Mount

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Peterbilt 378 Engine Mount - Used - Removed from a 2001 Peterbilt 378 truck, this engine mount has been visually inspected to ensure part quality. Have questions about our Peterbilt 378...
ConditionUsed
Engine ModelCaterpillar C15
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2001
Stock NumberPT-0644-33
MLS Number12034105
CategoryEngine Mounts
Last Updated12/18/2023
Location
York, ON, Canada
Sold By
Lomoca Inc.
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Peterbilt 378 Cab Mount

2001 Peterbilt 378 Cab Mount

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Peterbilt 378 Passenger Side Cab Mount - Used - Removed from a 2001 Peterbilt 378 truck, this passenger side cab mount has been visually inspected to ensure part quality. Have questions...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2001
Stock NumberPT-0644-32
MLS Number12034104
CategoryCab Mounts
Last Updated12/18/2023
Location
York, ON, Canada
Sold By
Lomoca Inc.
(833) 835-___  SHOW
NUMBERCall Seller
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Lomoca Inc.
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