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1991 Peterbilt 378

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Displaying 1 to 25 (of 170 products)
On Sale:

$30.61

Avail:
1 in Stock
Warehouse: US-12
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Alternator
 
Professional
W/48 Belt O.C.
Preferred Belt
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Alternator Professional
W/48 Belt O.C.
Preferred Belt

1 Per Vehicle
On Sale:

$46.96

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Fan
 
High Capacity Joined V-Belt
W/57 3/8 Belt O.C.
Preferred Belt
 
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan High Capacity Joined V-Belt
W/57 3/8 Belt O.C.
Preferred Belt

1 Per Vehicle
1991 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
 
1
 
Alternator and Air Conditioning
 
High Capacity Joined V-Belt
W/57 1/2 Belt O.C.
Preferred Belt
 
1991 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
Alternator and Air Conditioning High Capacity Joined V-Belt
W/57 1/2 Belt O.C.
Preferred Belt

1 Per Vehicle
On Sale:

$52.25

Avail:
2 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Fan
 
High Capacity Joined V-Belt
W/64 3/8 Belt O.C.
Preferred Belt
 
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan High Capacity Joined V-Belt
W/64 3/8 Belt O.C.
Preferred Belt

1 Per Vehicle
On Sale:

$24.31

Avail:
10 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Alternator and Air Conditioning
 
High Capacity V-Belt (Heavy-Duty)
W/50 Belt O.C.
 
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
Alternator and Air Conditioning High Capacity V-Belt (Heavy-Duty)
W/50 Belt O.C.

1 Per Vehicle
On Sale:

$33.77

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
14L L6 Diesel Turbo
 
1
 
Air Conditioning
 
Truck & Bus V-Belt
W/57 1/2 Belt O.C.
 
1991 Peterbilt 378 equipped with
14L L6 Diesel Turbo
Air Conditioning Truck & Bus V-Belt
W/57 1/2 Belt O.C.

1 Per Vehicle
On Sale:

$15.38

Avail:
25 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
2
 
Alternator
 
High Performance V-Belt HD
with 30-1/2in Long Belt
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Alternator High Performance V-Belt HD
with 30-1/2in Long Belt

2 Per Vehicle
On Sale:

$19.89

Avail:
16 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
14L L6 Diesel Turbo
 
1
 
Air Conditioning
 
High Performance V-Belt HD
with 42in Long Belt
 
1991 Peterbilt 378 equipped with
14L L6 Diesel Turbo
Air Conditioning High Performance V-Belt HD
with 42in Long Belt

1 Per Vehicle
On Sale:

$16.17

Avail:
14 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
14L L6 Diesel Turbo
 
2
 
Alternator
 
High Performance V-Belt HD
 
1991 Peterbilt 378 equipped with
14L L6 Diesel Turbo
Alternator High Performance V-Belt HD

2 Per Vehicle
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Fan To Alternator and Air Conditioning
 
High Performance V-Belt HD
with 46in Long Belt
 
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan To Alternator and Air Conditioning High Performance V-Belt HD
with 46in Long Belt

2 Per Vehicle
1991 Peterbilt 378 equipped with
10.3L 6 Diesel
 
1
 
Fan To Air Conditioning
 
High Performance V-Belt HD
 
1991 Peterbilt 378 equipped with
10.3L 6 Diesel
Fan To Air Conditioning High Performance V-Belt HD

1 Per Vehicle
On Sale:

$19.76

Avail:
38 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
2
 
Alternator
 
High Performance V-Belt HD
with 47-1/2in Long Belt
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Alternator High Performance V-Belt HD
with 47-1/2in Long Belt

2 Per Vehicle
On Sale:

$16.16

Avail:
69 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
 
2
 
Fan and Alternator
 
High Performance V-Belt HD
w/o A.C.
 
1991 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
Fan and Alternator High Performance V-Belt HD
w/o A.C.

2 Per Vehicle
On Sale:

$21.93

Avail:
57 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Fan To Alternator and Air Conditioning
 
High Performance V-Belt HD
with 54in Long Belt
 
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan To Alternator and Air Conditioning High Performance V-Belt HD
with 54in Long Belt

2 Per Vehicle
On Sale:

$22.83

Avail:
38 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan To Air Conditioning
 
High Performance V-Belt HD
with 56in Long Belt
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan To Air Conditioning High Performance V-Belt HD
with 56in Long Belt

1 Per Vehicle
On Sale:

$15.96

Avail:
41 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo,
10.5L 6 Diesel
 
2
 
Fan To Alternator and Air Conditioning
 
High Performance V-Belt HD
with 59in Long Belt
 
1991 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo,
10.5L 6 Diesel
Fan To Alternator and Air Conditioning High Performance V-Belt HD
with 59in Long Belt

2 Per Vehicle
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan To Air Conditioning
 
High Performance V-Belt HD
with 59in Long Belt
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan To Air Conditioning High Performance V-Belt HD
with 59in Long Belt

1 Per Vehicle
On Sale:

$22.49

Avail:
21 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Fan
 
High Performance V-Belt HD
with 66in Long Belt
Optional
 
1991 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan High Performance V-Belt HD
with 66in Long Belt
Optional

2 Per Vehicle
On Sale:

$23.94

Avail:
5 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
 
2
 
Fan
 
High Performance V-Belt HD
with 52in Long Belt
 
1991 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
Fan High Performance V-Belt HD
with 52in Long Belt

2 Per Vehicle
On Sale:

$25.24

Avail:
2 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
 
2
 
Fan
 
High Performance V-Belt HD
with 54in Long Belt
 
1991 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
Fan High Performance V-Belt HD
with 54in Long Belt

2 Per Vehicle
On Sale:

$22.36

Avail:
7 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
14L L6 Diesel Turbo
 
1
 
Air Conditioning
 
High Performance V-Belt HD
with 42-1/2in Long Belt
 
1991 Peterbilt 378 equipped with
14L L6 Diesel Turbo
Air Conditioning High Performance V-Belt HD
with 42-1/2in Long Belt

1 Per Vehicle
On Sale:

$24.65

Avail:
4 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
14L L6 Diesel Turbo
 
2
 
Fan
 
High Performance V-Belt HD
with 45-1/2in Long Belt
 
1991 Peterbilt 378 equipped with
14L L6 Diesel Turbo
Fan High Performance V-Belt HD
with 45-1/2in Long Belt

2 Per Vehicle
On Sale:

$23.05

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
14.0L L6 Diesel Turbo
 
2
 
Alternator
 
V-Belt
Matched Set of 2 Belts
 
1991 Peterbilt 378 equipped with
14.0L L6 Diesel Turbo
Alternator V-Belt
Matched Set of 2 Belts

2 Per Vehicle
1991 Peterbilt 378 equipped with
10.3L 6 Diesel
 
1
 
Air Conditioning
 
V-Belt
Eng: 3176
Eng Mfr: Caterpillar
 
1991 Peterbilt 378 equipped with
10.3L 6 Diesel
Air Conditioning V-Belt
Eng: 3176
Eng Mfr: Caterpillar

1 Per Vehicle
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
2
 
Alternator
 
V-Belt
w/ 46 belt
Matched Set of 2 Belts
Eng: Series 60
Eng Mfr: Detroit Diesel
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Alternator V-Belt
w/ 46 belt
Matched Set of 2 Belts
Eng: Series 60
Eng Mfr: Detroit Diesel

2 Per Vehicle
On Sale:

$25.47

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
2
 
Alternator
 
V-Belt
w/ 47 1/2 belt
Matched Set of 2 Belts
Eng: Series 60
Eng Mfr: Detroit Diesel
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Alternator V-Belt
w/ 47 1/2 belt
Matched Set of 2 Belts
Eng: Series 60
Eng Mfr: Detroit Diesel

2 Per Vehicle
On Sale:

$5.51

Avail:
7 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
 
1
 
Air Conditioning
 
V-Belt
w/ 48 Belt
 
1991 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
Air Conditioning V-Belt
w/ 48 Belt

1 Per Vehicle
On Sale:

$23.18

Avail:
2 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
 
1
 
Air Conditioning
 
V-Belt
w/ 48 Belt
 
1991 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
Air Conditioning V-Belt
w/ 48 Belt

1 Per Vehicle
On Sale:

$5.51

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Air Conditioning
 
V-Belt
w/ 54 Belt
Eng: Series 60
Eng Mfr: Detroit Diesel
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Air Conditioning V-Belt
w/ 54 Belt
Eng: Series 60
Eng Mfr: Detroit Diesel

1 Per Vehicle
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
V-Belt
w/ 54 Belt
Eng: Series 60
Eng Mfr: Detroit Diesel
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan V-Belt
w/ 54 Belt
Eng: Series 60
Eng Mfr: Detroit Diesel

1 Per Vehicle
On Sale:

$5.51

Avail:
5 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
V-Belt
w/ 55 belt
Eng: Series 60
Eng Mfr: Detroit Diesel
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan V-Belt
w/ 55 belt
Eng: Series 60
Eng Mfr: Detroit Diesel

1 Per Vehicle
On Sale:

$5.51

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
V-Belt
w/ 56 Belt
Eng: Series 60
Eng Mfr: Detroit Diesel
 
1991 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan V-Belt
w/ 56 Belt
Eng: Series 60
Eng Mfr: Detroit Diesel

1 Per Vehicle
Displaying 1 to 25 (of 170 products)