1991 Peterbilt 377 Serpentine Belts
Save up to 40% on original replacement 1991 Peterbilt 377 Serpentine Belts. Navigate our online catalogue to find Serpentine Belts and other parts designed specifically to fit a 1991 Peterbilt 377.






Serpentine Belt - Water Pump and Idler
$24.76
$21.99
Limited Stock
Ships: Friday Sep. 26th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4);
Engine Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4);
Vehicle Fitment Notes:
with 4 Rib Belt with 43in Long Belt
with 4 Rib Belt with 43in Long Belt





Serpentine Belt - Alternator
$32.75
$28.77
In Stock
Ships: Friday Sep. 26th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
with 34in Long Belt
with 34in Long Belt





Serpentine Belt - Alternator
$32.98
$28.62
In Stock
Ships: Friday Sep. 26th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
with 35-1/2in Long Belt
with 35-1/2in Long Belt





Serpentine Belt - Alternator
$43.75
$38.08
In Stock
Ships: Friday Sep. 26th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
with 38-1/2in Long Belt
with 38-1/2in Long Belt





Serpentine Belt - Water Pump and Idler
$43.88
$36.57
In Stock
Ships: Friday Sep. 26th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4);
Engine Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4);
Vehicle Fitment Notes:
with 43-5/8in Long Belt
with 43-5/8in Long Belt





Serpentine Belt - Fan To Air Conditioning
$44.85
$39.69
10+ In Stock
Ships: Friday Sep. 26th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.3L 629ci6;
Engine Base: 10.3L 629ci6;





Serpentine Belt - Fan and Idler
$72.12
$63.86
Limited Stock
Ships: Friday Sep. 26th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
with 51in Long Belt
with 51in Long Belt





Serpentine Belt - Fan and Idler
$66.07
$58.92
In Stock
Ships: Friday Sep. 26th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
with 54-1/2in Long Belt
with 54-1/2in Long Belt





Serpentine Belt - Fan and Idler
$80.59
$68.18
In Stock
Ships: Friday Sep. 26th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Made in Italy
Vehicle fitment:
Engine Base: 10.5L 638ci6;
Engine Base: 10.5L 638ci6;





Serpentine Belt - Fan To Alternator
$91.97
$74.79
Limited Stock
Ships: Friday Sep. 26th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Pick-Up: Ready in 1 Hour Thursday Sep. 25th
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.3L 629ci6;
Engine Base: 10.3L 629ci6;

Serpentine Belt - Water Pump
$24.34
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: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4); Engine Manufacturer: Cummins;
Engine Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4); Engine Manufacturer: Cummins;

Serpentine Belt - Air Conditioning
$35.25
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: 10.3L 629ci6; Engine Designation: 3176; Engine Manufacturer: Caterpillar;
Engine Base: 10.3L 629ci6; Engine Designation: 3176; Engine Manufacturer: Caterpillar;

Serpentine Belt - Fan and Alternator
$73.82
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: 10.3L 629ci6; Engine Designation: 3176; Engine Manufacturer: Caterpillar;
Engine Base: 10.3L 629ci6; Engine Designation: 3176; Engine Manufacturer: Caterpillar;
Vehicle Fitment Notes:
w/ 71 3/4" belt
w/ 71 3/4" belt

Serpentine Belt - Fan and Alternator
$76.28
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: 10.3L 629ci6; Engine Designation: 3176; Engine Manufacturer: Caterpillar;
Engine Base: 10.3L 629ci6; Engine Designation: 3176; Engine Manufacturer: Caterpillar;
Vehicle Fitment Notes:
w/ 72" Belt
w/ 72" Belt


Serpentine Belt - Air Conditioning
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.3L 629ci6; Engine Designation: 3176; Engine Manufacturer: Caterpillar;
Engine Base: 10.3L 629ci6; Engine Designation: 3176; Engine Manufacturer: Caterpillar;


Serpentine Belt - Water Pump
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4); Engine Manufacturer: Cummins;
Engine Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4); Engine Manufacturer: Cummins;


Serpentine Belt - Air Conditioning
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 10.3L 629ci6; Engine Designation: 3176; Engine Manufacturer: Caterpillar;
Engine Base: 10.3L 629ci6; Engine Designation: 3176; Engine Manufacturer: Caterpillar;