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Peterbilt 378 Frame & Chassis For Sale

Browse Peterbilt 378 Frame & Chassis on MyLittleSalesman.com and compare listings with prices from $120 to $1,199. Sellers include Garabedian Equipment, Vriens Truck Parts, LKQ Heavy Truck, and more. Filter by condition, price, or year to quickly narrow down to the right Peterbilt 378.
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Frame & Chassis (36)
   Brackets, Misc. (8)    Crossmembers (10)    Deck Plates / Catwalk (1)    Fifth Wheels (1)    Frame Horns (13)    Frames (2)    Headache Racks (1)
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378 (36)
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Showing 1 - 25 of 36 Listings

1 - 25 of 36 listings
1 - 25 of 36 listings
Peterbilt 378 Fifth Wheel

1988 Peterbilt 378 Fifth Wheel

$300 USD
Holland FW35 Air Slide Fifth Wheel, 33.5" Frame Width, 86.5" Rail, 52.5" Slide Base, 24" Slide Travel, 6.75" Deck Height, Driver Side Release. Top Plate P/N XA-351-A-L-P, S/N A00002539H
ConditionUsed
Fits To Make(s)PETERBILT
Fits To Model(s)378
Stock Number1511-12
MLS Number13893134
CategoryFifth Wheels
Last Updated5/5/2026
Location
Fresno, CA, US
Sold By
Garabedian Equipment
(855) 794-___  SHOW
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Garabedian Equipment
Peterbilt 378 Frame Horn

1998 Peterbilt 378 Frame Horn

$1,198.99 USD
(Used) 1998 Peterbilt 378, FRAME HORN- Part Number: 02-02516 L, Side: Driver Left Side, Location: Front Left, Associated Parts Supported: Hood, Material: Aluminum, Dimensions: L=24",...
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)1998
Part Number02-02516 L
Stock NumberP-54225
MLS Number12197220
CategoryFrame Horns
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 Crossmember

1998 Peterbilt 378 Crossmember

Contact for price
(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
CRG Heavy Truck Parts
(844) 402-___  SHOW
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CRG Heavy Truck Parts
Peterbilt 378 Crossmember

1998 Peterbilt 378 Crossmember

Contact for price
(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
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
Peterbilt 378 Crossmember

1998 Peterbilt 378 Crossmember

Contact for price
(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
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
Peterbilt 378 Crossmember

1998 Peterbilt 378 Crossmember

Contact for price
(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
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
Peterbilt 378 Crossmember

1998 Peterbilt 378 Crossmember

Contact for price
(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
CRG Heavy Truck Parts
(844) 402-___  SHOW
NUMBERCall Seller
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CRG Heavy Truck Parts
Peterbilt 378 Crossmember

1998 Peterbilt 378 Crossmember

Contact for price
(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-54221
MLS Number12197216
CategoryCrossmembers
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
Peterbilt 378 Crossmember

2005 Peterbilt 378 Crossmember

Contact for price
2005 Peterbilt 378 Crossmember For Sale - Used - May have some cosmetic blemishes (see photos). Give us a shout by phone, email, or text. We ship everywhere.
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)378
Will Fit Year(s)2005
Stock NumberPT-0625-33
MLS Number11396425
CategoryCrossmembers
Last Updated5/14/2026
Location
York, ON, Canada
Sold By
Lomoca Inc.
(833) 835-___  SHOW
NUMBERCall Seller
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Lomoca Inc.
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