Brands Vehicles
Lowest Prices
Free Returns
Online Since 2009
Shopping for

1989 Peterbilt 378

X

Displaying 1 to 25 (of 155 products)
On Sale:

$32.41

Avail:
1 in Stock
Warehouse: US-12
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Alternator
 
Professional
W/48 Belt O.C.
Preferred Belt
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Alternator Professional
W/48 Belt O.C.
Preferred Belt

1 Per Vehicle
On Sale:

$50.01

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Fan
 
High Capacity Joined V-Belt
W/57 3/8 Belt O.C.
Preferred Belt
 
1989 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
On Sale:

$55.69

Avail:
2 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Fan
 
High Capacity Joined V-Belt
W/64 3/8 Belt O.C.
Preferred Belt
 
1989 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:

$25.54

Avail:
11 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Alternator and Air Conditioning
 
High Capacity V-Belt (Heavy-Duty)
W/50 Belt O.C.
 
1989 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:

$35.83

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
14L L6 Diesel Turbo
 
1
 
Air Conditioning
 
Truck & Bus V-Belt
W/57 1/2 Belt O.C.
 
1989 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:

$16.65

Avail:
14 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
14L L6 Diesel Turbo
 
2
 
Alternator
 
High Performance V-Belt HD
 
1989 Peterbilt 378 equipped with
14L L6 Diesel Turbo
Alternator High Performance V-Belt HD

2 Per Vehicle
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Fan To Alternator and Air Conditioning
 
High Performance V-Belt HD
with 46in Long Belt
 
1989 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
On Sale:

$20.57

Avail:
40 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
2
 
Alternator
 
High Performance V-Belt HD
with 47-1/2in Long Belt
 
1989 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:

$16.63

Avail:
70 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
2
 
Alternator
 
High Performance V-Belt HD
with 49in Long Belt
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Alternator High Performance V-Belt HD
with 49in Long Belt

2 Per Vehicle
On Sale:

$22.93

Avail:
44 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Fan To Alternator and Air Conditioning
 
High Performance V-Belt HD
with 54in Long Belt
 
1989 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:

$16.42

Avail:
41 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan To Air Conditioning
 
High Performance V-Belt HD
with 56in Long Belt
 
1989 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:

$23.55

Avail:
21 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Fan
 
High Performance V-Belt HD
with 66in Long Belt
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan High Performance V-Belt HD
with 66in Long Belt

2 Per Vehicle
On Sale:

$26.56

Avail:
2 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
 
2
 
Fan
 
High Performance V-Belt HD
with 54in Long Belt
 
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
Fan High Performance V-Belt HD
with 54in Long Belt

2 Per Vehicle
On Sale:

$23.41

Avail:
7 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
14L L6 Diesel Turbo
 
1
 
Air Conditioning
 
High Performance V-Belt HD
with 42-1/2in Long Belt
 
1989 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:

$25.91

Avail:
4 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
14L L6 Diesel Turbo
 
2
 
Fan
 
High Performance V-Belt HD
with 45-1/2in Long Belt
 
1989 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:

$24.16

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
14.0L L6 Diesel Turbo
 
2
 
Alternator
 
V-Belt
Matched Set of 2 Belts
Eng Mfr: Cummins
 
1989 Peterbilt 378 equipped with
14.0L L6 Diesel Turbo
Alternator V-Belt
Matched Set of 2 Belts
Eng Mfr: Cummins

2 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
2
 
Alternator
 
V-Belt
w/ 46 belt
Eng Mfr: Detroit Diesel
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Alternator V-Belt
w/ 46 belt
Eng Mfr: Detroit Diesel

2 Per Vehicle
1989 Peterbilt 378 equipped with
14.0L L6 Diesel Turbo
 
2
 
Air Conditioning
 
V-Belt
1/2 Top Width, 46 Long
Matched Set of 2 Belts
Eng Mfr: Cummins
 
1989 Peterbilt 378 equipped with
14.0L L6 Diesel Turbo
Air Conditioning V-Belt
1/2 Top Width, 46 Long
Matched Set of 2 Belts
Eng Mfr: Cummins

2 Per Vehicle
On Sale:

$26.80

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
2
 
Alternator
 
V-Belt
w/ 47 1/2 belt
Eng Mfr: Detroit Diesel
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Alternator V-Belt
w/ 47 1/2 belt
Eng Mfr: Detroit Diesel

2 Per Vehicle
On Sale:

$5.83

Avail:
7 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
 
1
 
Air Conditioning
 
V-Belt
w/ 48 Belt
 
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
Air Conditioning V-Belt
w/ 48 Belt

1 Per Vehicle
On Sale:

$24.30

Avail:
2 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
 
1
 
Air Conditioning
 
V-Belt
w/ 48 Belt
 
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
Air Conditioning V-Belt
w/ 48 Belt

1 Per Vehicle
On Sale:

$5.83

Avail:
2 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Air Conditioning
 
V-Belt
w/ 54 Belt
Eng Mfr: Detroit Diesel
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Air Conditioning V-Belt
w/ 54 Belt
Eng Mfr: Detroit Diesel

1 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
V-Belt
w/ 54 Belt
Eng Mfr: Detroit Diesel
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan V-Belt
w/ 54 Belt
Eng Mfr: Detroit Diesel

1 Per Vehicle
On Sale:

$5.83

Avail:
5 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Air Conditioning
 
V-Belt
w/ 55 belt
Eng Mfr: Detroit Diesel
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Air Conditioning V-Belt
w/ 55 belt
Eng Mfr: Detroit Diesel

1 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
V-Belt
w/ 55 belt
Eng Mfr: Detroit Diesel
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan V-Belt
w/ 55 belt
Eng Mfr: Detroit Diesel

1 Per Vehicle
On Sale:

$5.83

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
V-Belt
w/ 56 Belt
Eng Mfr: Detroit Diesel
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan V-Belt
w/ 56 Belt
Eng Mfr: Detroit Diesel

1 Per Vehicle
On Sale:

$22.93

Avail:
1 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
V-Belt
w/ 56 Belt
Eng Mfr: Detroit Diesel
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan V-Belt
w/ 56 Belt
Eng Mfr: Detroit Diesel

1 Per Vehicle
On Sale:

$32.89

Avail:
4 in Stock
Warehouse: US-7
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
V-Belt
w/ 57 Belt
Eng Mfr: Detroit Diesel
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan V-Belt
w/ 57 Belt
Eng Mfr: Detroit Diesel

1 Per Vehicle
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
 
1
 
Alternator and Air Conditioning
 
V-Belt
Eng: 3406
Eng Mfr: Caterpillar
 
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
Alternator and Air Conditioning V-Belt
Eng: 3406
Eng Mfr: Caterpillar

1 Per Vehicle
On Sale:

$18.75

Avail:
7 in Stock
Warehouse: US-1
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
14L L6 Diesel Turbo
 
1
 
Air Conditioning
 
High Capacity V-Belt (Standard)
W/1/2 Belt T.W.
W/42 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
14L L6 Diesel Turbo
Air Conditioning High Capacity V-Belt (Standard)
W/1/2 Belt T.W.
W/42 1/2 Belt O.C.

1 Per Vehicle
On Sale:

$12.38

Avail:
1 in Stock
Warehouse: US-1
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Alternator
 
High Capacity V-Belt (Standard)
W/43 7/8 Belt O.C.
Optional Belt
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Alternator High Capacity V-Belt (Standard)
W/43 7/8 Belt O.C.
Optional Belt

2 Per Vehicle
Displaying 1 to 25 (of 155 products)