Peterbilt 378 Frame & Chassis For Sale

Shop used Peterbilt 378 Frame & Chassis on MyLittleSalesman.com . Compare active listings with prices from $120 to $1,195. Sellers include Garabedian Equipment, Vriens Truck Parts, Frontier 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

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Frame & Chassis

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Peterbilt

Model
378

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1 - 18 of 18 listings

Peterbilt 378 Fifth Wheel

1988 Peterbilt 378 Fifth Wheel

$400 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

Condition	Used
Fits To Make(s)	PETERBILT
Fits To Model(s)	378
Stock Number	1511-12
MLS Number	13893134
Category	Fifth Wheels
Last Updated	4/9/2026
Location	Fresno, CA, US
Sold By	Garabedian Equipment

(855) 794-___ SHOW
NUMBERCall Seller

Garabedian Equipment

Peterbilt 378 Left Bracket

Peterbilt 378 Left Bracket

$225 USD

01-49257L KNEE-ENGINE SPRT FRONT LH

Quantity	4
Condition	Used
Fits To Make(s)	PETERBILT
Fits To Model(s)	378
Side	Left
Stock Number	107733
MLS Number	13119279
Category	Brackets, Misc.
Last Updated	3/19/2026
Location	Salt Lake City, UT, US
Sold By	Vriens Truck Parts

(801) 478-___ SHOW
NUMBERCall Seller

Vriens Truck Parts

Peterbilt 378 Right Bracket

Peterbilt 378 Right Bracket

$205 USD

01-49257R KNEE-ENGINE SPRT FRONT RH

Condition	Used
Fits To Make(s)	PETERBILT
Fits To Model(s)	378
Side	Right
Stock Number	4570
MLS Number	12874286
Category	Brackets, Misc.
Last Updated	3/19/2026
Location	Salt Lake City, UT, US
Sold By	Vriens Truck Parts

(801) 478-___ SHOW
NUMBERCall Seller

Vriens Truck Parts

Peterbilt 378 Right Bracket

Peterbilt 378 Right Bracket

$800 USD

02-02944M001R BRACKET-FRONT SPRING DRIVE ALUM, CAST# 02-01952M000, MU;TIPLE COLORS

Quantity	2
Condition	Used
Fits To Make(s)	PETERBILT
Fits To Model(s)	378
Side	Right
Stock Number	6108
MLS Number	13176766
Category	Brackets, Misc.
Last Updated	2/18/2026
Location	Salt Lake City, UT, US
Sold By	Vriens Truck Parts

(801) 478-___ SHOW
NUMBERCall Seller

Vriens Truck Parts

Used Peterbilt 378 Fifth Wheel Crossmember

2007 Used Peterbilt 378 Fifth Wheel Crossmember

$361 USD

Used 378 Fifth Wheel Crossmember, W x H x L: 13.25"x9.50"x33.25"

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	378
Will Fit Year(s)	2007
Stock Number	648-12855
MLS Number	13984104
Category	Crossmembers
Last Updated	1/24/2026
Location	Dorr, MI, US
Sold By	Frontier Truck Parts

(855) 300-___ SHOW
NUMBERCall Seller

Frontier Truck Parts

Peterbilt 378 Bracket

2003 Peterbilt 378 Bracket

$120 USD

05-15216 BRACKET-AIR CLEANER 15" STAINLESS

Quantity	6
Condition	Used
Fits To Make(s)	PETERBILT
Fits To Model(s)	378
Stock Number	108101
MLS Number	13244662
Category	Brackets, Misc.
Last Updated	11/20/2025
Location	Salt Lake City, UT, US
Sold By	Vriens Truck Parts

(801) 478-___ SHOW
NUMBERCall Seller

Vriens Truck Parts

Peterbilt 378 Right Bracket

2008 Peterbilt 378 Right Bracket

$320 USD

29-02784M001 SUPPORT-SLPR RH HIGH MT*C CAST# 29-02784M000

Quantity	2
Condition	Used
Fits To Make(s)	PETERBILT
Fits To Model(s)	378
Side	Right
Stock Number	5251
MLS Number	13010281
Category	Brackets, Misc.
Last Updated	11/20/2025
Location	Salt Lake City, UT, US
Sold By	Vriens Truck Parts

(801) 478-___ SHOW
NUMBERCall Seller

Vriens Truck Parts

Peterbilt 378 Frame

1988 Peterbilt 378 Frame

$300 USD

1988 Peterbilt 378 Aluminum Front Crossmember Motor Mount, P/N 05-15046.

Condition	Used
Fits To Make(s)	PETERBILT
Fits To Model(s)	378
Stock Number	1511-19
MLS Number	13894237
Category	Frames
Last Updated	10/29/2025
Location	Fresno, CA, US
Sold By	Garabedian Equipment

(855) 794-___ SHOW
NUMBERCall Seller

Garabedian Equipment

Peterbilt 378 Deck Plate / Catwalk

2006 Peterbilt 378 Deck Plate / Catwalk

$150 USD

(USED) Peterbilt 378 Length : 34 Type: Fixed Style: Grate Width : 21

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	378
Stock Number	25795621
MLS Number	13575825
Category	Deck Plates / Catwalk
Last Updated	5/14/2025
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Vander Haag's Inc.

Peterbilt 378 Frame Horn

1998 Peterbilt 378 Frame Horn

$595 USD

(USED) Peterbilt 378 Ref# 02-01952 ALUMINUM

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	378
Part Number	02-01952
Stock Number	25697710
MLS Number	13130548
Category	Frame Horns
Last Updated	11/23/2024
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Vander Haag's Inc.

Peterbilt 378 Frame Horn

1998 Peterbilt 378 Frame Horn

$595 USD

(USED) Peterbilt 378 Ref# 02-01952 ALUMINUM

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	378
Part Number	02-01952
Stock Number	25697709
MLS Number	13130547
Category	Frame Horns
Last Updated	11/23/2024
Location	Sioux Falls, SD, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Vander Haag's Inc.

Peterbilt 378 Bracket

Peterbilt 378 Bracket

$320 USD

29-02785M001 SUPPORT-SLPR LH HIGH MT*C CAST# 29-02785M000

Condition	Used
Side	Left
Stock Number	5250
MLS Number	13010280
Category	Brackets, Misc.
Last Updated	7/26/2024
Location	Salt Lake City, UT, US
Sold By	Vriens Truck Parts

(801) 478-___ SHOW
NUMBERCall Seller

Vriens Truck Parts

Peterbilt 378 Bracket

Peterbilt 378 Bracket

$125 USD

BRACE-CAB CORNER STL RH 20-16129R

Condition	Used
Side	Right
Stock Number	102584
MLS Number	12765988
Category	Brackets, Misc.
Last Updated	4/10/2024
Location	Salt Lake City, UT, US
Sold By	Vriens Truck Parts

(801) 478-___ SHOW
NUMBERCall Seller

Vriens Truck Parts

Peterbilt 378 Frame Horn

2000 Peterbilt 378 Frame Horn

Recently Updated

$1,195 USD

(USED) Peterbilt 378 Ref# 02-03115

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	378
Part Number	02-03115
Stock Number	25936204
MLS Number	14131453
Category	Frame Horns
Last Updated	4/25/2026
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Vander Haag's Inc.

Peterbilt 378 Frame Horn

1997 Peterbilt 378 Frame Horn

$1,195 USD

(USED) Peterbilt 378 Ref# 02-02516L

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	378
Part Number	02-02516L
Stock Number	25968748
MLS Number	14292297
Category	Frame Horns
Last Updated	4/5/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Vander Haag's Inc.

Peterbilt 378 Frame Horn

1997 Peterbilt 378 Frame Horn

$1,195 USD

(USED) Peterbilt 378 Ref# 02-02516R RH SIDE FRAME HORN ONLY, DOES NOT INCLUDE ANY OTHER COMPONENTS

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	378
Part Number	02-02516R
Stock Number	25968757
MLS Number	14292296
Category	Frame Horns
Last Updated	4/5/2026
Location	Spencer, IA, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Vander Haag's Inc.

Peterbilt 378 Frame Horn

2000 Peterbilt 378 Frame Horn

$465 USD

(USED) Peterbilt 378 Ref# 02-02944 R 02-02944 R

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	378
Part Number	02-02944 R
Stock Number	25971233
MLS Number	14280868
Category	Frame Horns
Last Updated	4/2/2026
Location	Kansas City, MO, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Vander Haag's Inc.

Peterbilt 378 Deck Plate / Catwalk

2004 Peterbilt 378 Deck Plate / Catwalk

$150 USD

(USED) Peterbilt 378 Length : 21 Type: Fixed Style: Grate Width : 34

Condition	Used
Fits To Make(s)	Peterbilt
Fits To Model(s)	378
Stock Number	25933050
MLS Number	14123214
Category	Deck Plates / Catwalk
Last Updated	2/4/2026
Location	Winimac, IN, US
Sold By	Vander Haag's Inc.

(855) 370-___ SHOW
NUMBERCall Seller

Vander Haag's Inc.

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