2004 Peterbilt 378 Serpentine Belt
Navigate our online catalogue to find original replacement Serpentine Belts specifically designed to fit a 2004 Peterbilt 378.






Serpentine Belt
$93.95
$82.53 CAD
In Stock
Condition: New
Ships: Today, Oct. 9th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Alternator
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.8L 10834cc 661ci L6 (4.9213x5.7874; 125x147);
Engine Base: 10.8L 10834cc 661ci L6 (4.9213x5.7874; 125x147);





Serpentine Belt
$101.32
$87.28 CAD
In Stock
Condition: New
Ships: Today, Oct. 9th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Fan and Alternator
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 12.0L 732ci6 (5.10x5.90; 130.0x150.0);
Engine Base: 12.0L 732ci6 (5.10x5.90; 130.0x150.0);





Serpentine Belt
$67.12
$59.62 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 9th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Main Drive
Required Per Vehicle: 1
Made in Italy
Vehicle fitment:
Engine Base: 11.1L 677ci6;
Engine Base: 11.1L 677ci6;
Vehicle Fitment Notes:
with 101in Long Belt
with 101in Long Belt





Serpentine Belt
$67.12
$59.62 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 9th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Main Drive
Required Per Vehicle: 1
Made in Italy
Vehicle fitment:
Engine Base: 12.5L 763ci6;
Engine Base: 12.5L 763ci6;
Vehicle Fitment Notes:
with 100-1/2in Long Belt
with 100-1/2in Long Belt





Serpentine Belt
$88.93
$78.73 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 9th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Main Drive
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 11.1L 677ci6;
Engine Base: 11.1L 677ci6;
Vehicle Fitment Notes:
with 102-1/2in Long Belt
with 102-1/2in Long Belt





Serpentine Belt
$88.93
$78.73 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 9th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Main Drive
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 12.5L 763ci6;
Engine Base: 12.5L 763ci6;
Vehicle Fitment Notes:
with 102-1/2in Long Belt
with 102-1/2in Long Belt





Serpentine Belt
$99.71
$88.27 CAD
In Stock
Condition: New
Ships: Today, Oct. 9th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Fan and Alternator
Required Per Vehicle: 1
Made in Italy
Vehicle fitment:
Engine Base: 14.9L 6Cyl L (-)(912) 5.39 137.0(Bore)6.65 169.0(Stroke);
Engine Base: 14.9L 6Cyl L (-)(912) 5.39 137.0(Bore)6.65 169.0(Stroke);

Serpentine Belt
$36.12 CAD
Limited Stock
Condition: New
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Air Conditioning
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 14.9L 6Cyl L (-)(912) 5.39 137.0(Bore)6.65 169.0(Stroke); Engine Designation: ISX 15.0; Engine Manufacturer: Cummins;
Engine Base: 14.9L 6Cyl L (-)(912) 5.39 137.0(Bore)6.65 169.0(Stroke); Engine Designation: ISX 15.0; Engine Manufacturer: Cummins;

Serpentine Belt
$81.11 CAD
In Stock
Condition: New
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Fan and Alternator
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 12.0L 732ci6 (5.10x5.90; 130.0x150.0); Engine Designation: C12; Engine Manufacturer: Caterpillar;
Engine Base: 12.0L 732ci6 (5.10x5.90; 130.0x150.0); Engine Designation: C12; Engine Manufacturer: Caterpillar;

Serpentine Belt
$58.37 CAD
Limited Stock
Condition: New
Ships: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Alternator and Air Conditioning
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 11.1L 677ci6; Engine Designation: C11; Engine Manufacturer: Caterpillar;
Engine Base: 11.1L 677ci6; Engine Designation: C11; Engine Manufacturer: Caterpillar;
Vehicle Fitment Notes:
w/ 101" Belt
w/ 101" Belt

Serpentine Belt
$58.37 CAD
Limited Stock
Condition: New
Ships: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Alternator and Air Conditioning
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 12.5L 763ci6; Engine Designation: C13; Engine Manufacturer: Caterpillar;
Engine Base: 12.5L 763ci6; Engine Designation: C13; Engine Manufacturer: Caterpillar;
Vehicle Fitment Notes:
w/ 101" Belt
w/ 101" Belt

Serpentine Belt
$70.63 CAD
Limited Stock
Condition: New
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Alternator and Air Conditioning
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 11.1L 677ci6; Engine Designation: C11; Engine Manufacturer: Caterpillar;
Engine Base: 11.1L 677ci6; Engine Designation: C11; Engine Manufacturer: Caterpillar;
Vehicle Fitment Notes:
w/ 102 1/2" Belt
w/ 102 1/2" Belt

Serpentine Belt
$70.63 CAD
Limited Stock
Condition: New
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Alternator and Air Conditioning
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 12.5L 763ci6; Engine Designation: C13; Engine Manufacturer: Caterpillar;
Engine Base: 12.5L 763ci6; Engine Designation: C13; Engine Manufacturer: Caterpillar;
Vehicle Fitment Notes:
w/ 102 1/2" Belt
w/ 102 1/2" Belt

Serpentine Belt
$82.23 CAD
Limited Stock
Condition: New
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Alternator
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 14.9L 6Cyl L (-)(912) 5.39 137.0(Bore)6.65 169.0(Stroke); Engine Designation: ISX 15.0; Engine Manufacturer: Cummins;
Engine Base: 14.9L 6Cyl L (-)(912) 5.39 137.0(Bore)6.65 169.0(Stroke); Engine Designation: ISX 15.0; Engine Manufacturer: Cummins;
Vehicle Fitment Notes:
w/ 135 Amp Alt.
w/ 135 Amp Alt.

Serpentine Belt
$73.56 CAD
Limited Stock
Condition: New
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Alternator
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 14.9L 6Cyl L (-)(912) 5.39 137.0(Bore)6.65 169.0(Stroke); Engine Designation: ISX 15.0; Engine Manufacturer: Cummins;
Engine Base: 14.9L 6Cyl L (-)(912) 5.39 137.0(Bore)6.65 169.0(Stroke); Engine Designation: ISX 15.0; Engine Manufacturer: Cummins;
Vehicle Fitment Notes:
w/ 130 Amp Alt.
w/ 130 Amp Alt.





Serpentine Belt
$44.76
$36.02 CAD
Out of Stock
Condition: New
Air Conditioning
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.8L 10834cc 661ci L6 (4.9213x5.7874; 125x147);
Engine Base: 10.8L 10834cc 661ci L6 (4.9213x5.7874; 125x147);