1990 Peterbilt 378 Serpentine Belts
Save up to 40% on original replacement 1990 Peterbilt 378 Serpentine Belts. Navigate our online catalogue to find Serpentine Belts and other parts designed specifically to fit a 1990 Peterbilt 378.
Serpentine Belt - Water Pump and Idler
$24.76
$21.99
Limited Stock
Ships: Today, Sep. 26th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
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);
Serpentine Belt - Alternator
$32.75
$28.77
In Stock
Ships: Today, Sep. 26th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
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: Today, Sep. 26th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
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: Today, Sep. 26th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
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 - Air Conditioning
$44.85
$39.69
10+ In Stock
Ships: Today, Sep. 26th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
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: Today, Sep. 26th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
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: Today, Sep. 26th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
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: Today, Sep. 26th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Made in Italy
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 59in Long Belt
with 59in Long Belt
Serpentine Belt - Fan To Alternator
$92.90
$76.97
In Stock
Ships: Today, Sep. 26th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
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
$19.48
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 Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4);
Vehicle Fitment Notes:
w/ 4-Rib Belt
w/ 4-Rib Belt
Serpentine Belt - Alternator
$25.82
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: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
W/ 34" Belt
W/ 34" Belt
Serpentine Belt - Alternator
$25.94
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: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
W/ 35" Belt
W/ 35" Belt
Serpentine Belt - Alternator
$26.85
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: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
W/ 38" Belt
W/ 38" Belt
Serpentine Belt - Water Pump
$34.51
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: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4);
Engine Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4);
Vehicle Fitment Notes:
w/ 6-Rib Belt
w/ 6-Rib Belt
Serpentine Belt - Fan and Idler
$57.29
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: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
w/ 50 1/2" belt
w/ 50 1/2" belt
Serpentine Belt - Fan and Idler
$52.49
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: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
w/ 54 1/2" Belt
w/ 54 1/2" Belt
Serpentine Belt - Fan and Idler
$70.89
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: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Engine Base: 10.0L 10014cc 611ci L6 (4.9213x5.3543; 125x136);
Vehicle Fitment Notes:
w/ 58 1/2" Belt
w/ 58 1/2" Belt
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 Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4);
Vehicle Fitment Notes:
w/ 4-Rib Belt
w/ 4-Rib Belt
Serpentine Belt - Alternator
Call for Pricing
Out of Stock
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:
W/ 34" Belt
W/ 34" Belt
Serpentine Belt - Alternator
Call for Pricing
Out of Stock
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:
W/ 34" Belt
W/ 34" Belt
Serpentine Belt - Alternator
Call for Pricing
Out of Stock
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:
W/ 35" Belt
W/ 35" Belt
Serpentine Belt - Alternator
Call for Pricing
Out of Stock
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:
W/ 38" Belt
W/ 38" Belt
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 Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4);
Vehicle Fitment Notes:
w/ 6-Rib Belt
w/ 6-Rib Belt
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 Base: 14.0L 14013cc 855ci L6 (5.5x6; 139.7x152.4);
Vehicle Fitment Notes:
w/ 6-Rib Belt
w/ 6-Rib Belt