2004 Peterbilt 378 Serpentine Belts
Save up to 40% on original replacement 2004 Peterbilt 378 Serpentine Belts. Navigate our online catalogue to find Serpentine Belts and other parts designed specifically to fit a 2004 Peterbilt 378.
Serpentine Belt - Alternator
$93.95
$82.53
In Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
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 - Fan and Alternator
$101.32
$87.28
In Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
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 - Main Drive
$67.12
$59.62
In Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
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 - Main Drive
$67.12
$59.62
In Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
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 - Main Drive
$88.93
$78.73
Limited Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
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 - Main Drive
$88.93
$78.73
Limited Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
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 - Fan and Alternator
$99.71
$88.27
In Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
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 - Air Conditioning
$36.12
In Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
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 - Fan and Alternator
$81.11
In Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
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 - Alternator and Air Conditioning
$58.37
Limited Stock
Ships: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Condition: New
Required Per Vehicle: 1
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 - Alternator and Air Conditioning
$58.37
Limited Stock
Ships: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Condition: New
Required Per Vehicle: 1
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 - Alternator and Air Conditioning
$70.63
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
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 - Alternator and Air Conditioning
$70.63
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
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 - Alternator
$82.23
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
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 - Alternator
$73.56
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
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 - Air Conditioning
$44.76
$36.02
Out of Stock
Condition: New
Required Per Vehicle: 1
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);