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1989 Peterbilt 378

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Displaying 26 to 50 (of 118 products)
On Sale:

$22.50

Avail:
4 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
 
1
 
Air Conditioning
 
Professional-Standard
W/48 3/8 Belt O.C.
 
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
Air Conditioning Professional-Standard
W/48 3/8 Belt O.C.

1 Per Vehicle
On Sale:

$16.18

Avail:
4 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Alternator and Air Conditioning
 
Professional-Standard
W/50 Belt O.C.
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Alternator and Air Conditioning Professional-Standard
W/50 Belt O.C.

1 Per Vehicle
On Sale:

$30.63

Avail:
4 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
 
1
 
Air Conditioning
 
Professional-Standard
W/52 3/8 Belt O.C.
 
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
Air Conditioning Professional-Standard
W/52 3/8 Belt O.C.

1 Per Vehicle
On Sale:

$27.55

Avail:
10 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Air Conditioning
 
Professional-Standard
W/53 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Air Conditioning Professional-Standard
W/53 1/2 Belt O.C.

1 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
Professional-Standard
W/53 1/2 Belt O.C.
Optional Belt
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan Professional-Standard
W/53 1/2 Belt O.C.
Optional Belt

1 Per Vehicle
On Sale:

$26.64

Avail:
5 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Alternator and Air Conditioning
 
Professional-Standard
W/54 1/2 Belt O.C.
Optional Belt
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Alternator and Air Conditioning Professional-Standard
W/54 1/2 Belt O.C.
Optional Belt

2 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Air Conditioning
 
Professional-Standard
W/54 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Air Conditioning Professional-Standard
W/54 1/2 Belt O.C.

1 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
Professional-Standard
W/54 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan Professional-Standard
W/54 1/2 Belt O.C.

1 Per Vehicle
On Sale:

$28.77

Avail:
9 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Air Conditioning
 
Professional-Standard
W/55 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Air Conditioning Professional-Standard
W/55 1/2 Belt O.C.

1 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
Professional-Standard
W/55 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan Professional-Standard
W/55 1/2 Belt O.C.

1 Per Vehicle
On Sale:

$18.43

Avail:
15 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Alternator and Air Conditioning
 
Professional-Standard
W/56 1/2 Belt O.C.
Optional Belt
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Alternator and Air Conditioning Professional-Standard
W/56 1/2 Belt O.C.
Optional Belt

2 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
Professional-Standard
W/56 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan Professional-Standard
W/56 1/2 Belt O.C.

1 Per Vehicle
On Sale:

$38.03

Avail:
12 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Fan
 
Professional-Standard
W/57 3/8 Belt O.C.
Optional Belt
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan Professional-Standard
W/57 3/8 Belt O.C.
Optional Belt

2 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
Professional-Standard
W/57 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan Professional-Standard
W/57 1/2 Belt O.C.

1 Per Vehicle
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
 
2
 
Alternator and Air Conditioning
 
Professional-Standard
W/57 1/2 Belt O.C.
PowerBand belt may work, use template to check
 
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
Alternator and Air Conditioning Professional-Standard
W/57 1/2 Belt O.C.
PowerBand belt may work, use template to check

2 Per Vehicle
On Sale:

$18.47

Avail:
16 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Fan
 
Professional-Standard
W/58 3/8 Belt O.C.
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan Professional-Standard
W/58 3/8 Belt O.C.

1 Per Vehicle
On Sale:

$18.63

Avail:
6 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Alternator and Air Conditioning
 
Professional-Standard
W/59 3/8 Belt O.C.
Optional Belt
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Alternator and Air Conditioning Professional-Standard
W/59 3/8 Belt O.C.
Optional Belt

2 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Air Conditioning
 
Professional-Standard
W/59 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Air Conditioning Professional-Standard
W/59 1/2 Belt O.C.

1 Per Vehicle
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
 
2
 
Alternator and Air Conditioning
 
Professional-Standard
W/59 1/2 Belt O.C.
PowerBand belt may work, use template to check
 
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
Alternator and Air Conditioning Professional-Standard
W/59 1/2 Belt O.C.
PowerBand belt may work, use template to check

2 Per Vehicle
On Sale:

$30.59

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:

$32.60

Avail:
3 in Stock
Warehouse: US-12
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
14.0L L6 Diesel Turbo
 
1
 
Air Conditioning
 
Specialty-Heavy Duty
W/42 1/2 Belt O.C.
W/1/2 Belt T.W.
Available Until Stock Depleted
 
1989 Peterbilt 378 equipped with
14.0L L6 Diesel Turbo
Air Conditioning Specialty-Heavy Duty
W/42 1/2 Belt O.C.
W/1/2 Belt T.W.
Available Until Stock Depleted

1 Per Vehicle
On Sale:

$27.82

Avail:
3 in Stock
Warehouse: US-12
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Alternator and Air Conditioning
 
Specialty-Heavy Duty
W/56 1/2 Belt O.C.
Optional Belt
Available Until Stock Depleted
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Alternator and Air Conditioning Specialty-Heavy Duty
W/56 1/2 Belt O.C.
Optional Belt
Available Until Stock Depleted

2 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
Specialty-Heavy Duty
W/56 1/2 Belt O.C.
Available Until Stock Depleted
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan Specialty-Heavy Duty
W/56 1/2 Belt O.C.
Available Until Stock Depleted

1 Per Vehicle
On Sale:

$34.36

Avail:
1 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Fan
 
Specialty-Heavy Duty
W/57 3/8 Belt O.C.
Optional Belt
Available Until Stock Depleted
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan Specialty-Heavy Duty
W/57 3/8 Belt O.C.
Optional Belt
Available Until Stock Depleted

2 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
Specialty-Heavy Duty
W/57 1/2 Belt O.C.
Available Until Stock Depleted
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan Specialty-Heavy Duty
W/57 1/2 Belt O.C.
Available Until Stock Depleted

1 Per Vehicle
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
 
2
 
Alternator and Air Conditioning
 
Specialty-Heavy Duty
W/57 1/2 Belt O.C.
PowerBand belt may work, use template to check
Available Until Stock Depleted
 
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
Alternator and Air Conditioning Specialty-Heavy Duty
W/57 1/2 Belt O.C.
PowerBand belt may work, use template to check
Available Until Stock Depleted

2 Per Vehicle
On Sale:

$26.00

Avail:
4 in Stock
Warehouse: US-12
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Fan
 
Specialty-Heavy Duty
W/58 3/8 Belt O.C.
Available Until Stock Depleted
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan Specialty-Heavy Duty
W/58 3/8 Belt O.C.
Available Until Stock Depleted

1 Per Vehicle
On Sale:

$24.95

Avail:
6 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
14.0L L6 Diesel Turbo
 
1
 
Air Conditioning
 
High Capacity V-Belt (Heavy-Duty)
W/1/2 Belt T.W.
W/42 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
14.0L L6 Diesel Turbo
Air Conditioning High Capacity V-Belt (Heavy-Duty)
W/1/2 Belt T.W.
W/42 1/2 Belt O.C.

1 Per Vehicle
On Sale:

$17.48

Avail:
6 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Alternator
 
High Capacity V-Belt (Heavy-Duty)
W/43 7/8 Belt O.C.
Optional Belt
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Alternator High Capacity V-Belt (Heavy-Duty)
W/43 7/8 Belt O.C.
Optional Belt

2 Per Vehicle
On Sale:

$21.82

Avail:
4 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
 
1
 
Air Conditioning
 
High Capacity V-Belt (Heavy-Duty)
W/48 3/8 Belt O.C.
 
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
Air Conditioning High Capacity V-Belt (Heavy-Duty)
W/48 3/8 Belt O.C.

1 Per Vehicle
On Sale:

$28.17

Avail:
3 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
 
1
 
Air Conditioning
 
High Capacity V-Belt (Heavy-Duty)
W/52 3/8 Belt O.C.
 
1989 Peterbilt 378 equipped with
10.0L L6 Diesel Turbo
Air Conditioning High Capacity V-Belt (Heavy-Duty)
W/52 3/8 Belt O.C.

1 Per Vehicle
On Sale:

$25.86

Avail:
1 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Air Conditioning
 
High Capacity V-Belt (Heavy-Duty)
W/53 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Air Conditioning High Capacity V-Belt (Heavy-Duty)
W/53 1/2 Belt O.C.

1 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
High Capacity V-Belt (Heavy-Duty)
W/53 1/2 Belt O.C.
Optional Belt
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan High Capacity V-Belt (Heavy-Duty)
W/53 1/2 Belt O.C.
Optional Belt

1 Per Vehicle
On Sale:

$25.24

Avail:
6 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Air Conditioning
 
High Capacity V-Belt (Heavy-Duty)
W/55 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Air Conditioning High Capacity V-Belt (Heavy-Duty)
W/55 1/2 Belt O.C.

1 Per Vehicle
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
 
1
 
Fan
 
High Capacity V-Belt (Heavy-Duty)
W/55 1/2 Belt O.C.
 
1989 Peterbilt 378 equipped with
12.7L L6 Diesel Turbo/Aftercooled
Fan High Capacity V-Belt (Heavy-Duty)
W/55 1/2 Belt O.C.

1 Per Vehicle
On Sale:

$23.18

Avail:
4 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Fan
 
High Capacity V-Belt (Heavy-Duty)
W/58 3/8 Belt O.C.
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan High Capacity V-Belt (Heavy-Duty)
W/58 3/8 Belt O.C.

1 Per Vehicle
On Sale:

$26.97

Avail:
2 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
1
 
Fan
 
High Capacity V-Belt (Heavy-Duty)
W/59 Belt O.C.
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan High Capacity V-Belt (Heavy-Duty)
W/59 Belt O.C.

1 Per Vehicle
On Sale:

$25.04

Avail:
2 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
 
2
 
Fan
 
High Capacity V-Belt (Heavy-Duty)
W/66 3/8 Belt O.C.
Optional Belt
 
1989 Peterbilt 378 equipped with
10.5L 6 Diesel
Fan High Capacity V-Belt (Heavy-Duty)
W/66 3/8 Belt O.C.
Optional Belt

2 Per Vehicle
On Sale:

$22.39

Avail:
6 in Stock
Warehouse: US-4
Qty:
EnginePer VehiclePositionFit NotesFitment Notes
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
 
2
 
Fan
 
Truck & Bus V-Belt
Optional Belt
W/52 1/2 Belt O.C.
PowerBand belt may work, use template to check
 
1989 Peterbilt 378 equipped with
14.6L L6 Diesel Turbo
Fan Truck & Bus V-Belt
Optional Belt
W/52 1/2 Belt O.C.
PowerBand belt may work, use template to check

2 Per Vehicle
Displaying 26 to 50 (of 118 products)