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1999 Peterbilt 378 Parts
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![FleetRunner V-Belt for Select 1979-2012 Ford, GMC and Other Makes [HC50 Section, 42.340 in. Outside Circumference]](https://www.jegs.com/images/mini_100/400/465/465-9420hd.jpg)
GATES
FleetRunner V-Belt for Select 1979-2012 Ford, GMC and Other Makes [HC50 Section, 42.340 in. Outside Circumference]
Part Number: 465-9420HD
$2686$49.99
YOU SAVE
$23.13
Ships Tomorrow
Lowest price guarantee![FleetRunner V-Belt for Select 1979-2012 Ford, GMC and Other Makes [HC50 Section, 42.340 in. Outside Circumference]](https://www.jegs.com/images/mini_200/400/465/465-9420hd.jpg)
GATES
FleetRunner V-Belt for Select 1979-2012 Ford, GMC and Other Makes [HC50 Section, 42.340 in. Outside Circumference]
Part Number: 465-9420HD
Ships TomorrowLowest Price Guarantee$2686 $49.99
YOU SAVE
$23.13
UNITED PACIFIC
31088 ULTRALIT High Power LED 4 in. x 6 in. Low Beam Headlight With Polycarbonate Lens & Housing
Part Number: 953-31088
$6799
Ships on 10/21/2026Lowest price guarantee
UNITED PACIFIC
31088 ULTRALIT High Power LED 4 in. x 6 in. Low Beam Headlight With Polycarbonate Lens & Housing
Part Number: 953-31088
Ships on 10/21/2026Lowest Price Guarantee$6799
UNITED PACIFIC
31152 ULTRALIT 4 in. x 6 in. Rectangular LED Headlight With White LED Position Light - Low Beam
Part Number: 953-31152
$14599
Ships on 10/13/2026Lowest price guarantee
UNITED PACIFIC
31152 ULTRALIT 4 in. x 6 in. Rectangular LED Headlight With White LED Position Light - Low Beam
Part Number: 953-31152
Ships on 10/13/2026Lowest Price Guarantee$14599
UNITED PACIFIC
34134 ULTRALIT Heated 4 in. x 6 in. LED Headlight With Glass Lens & Aluminum Housing - High Beam - Black
Part Number: 953-34134
$9699
Ships on 10/21/2026Lowest price guarantee
UNITED PACIFIC
34134 ULTRALIT Heated 4 in. x 6 in. LED Headlight With Glass Lens & Aluminum Housing - High Beam - Black
Part Number: 953-34134
Ships on 10/21/2026Lowest Price Guarantee$9699
UNITED PACIFIC
34131 ULTRALIT Heated 4 in. x 6 in. LED Headlight With Glass Lens & Aluminum Housing - Low Beam - Chrome
Part Number: 953-34131
$9399
Ships on 10/21/2026Lowest price guarantee
UNITED PACIFIC
34131 ULTRALIT Heated 4 in. x 6 in. LED Headlight With Glass Lens & Aluminum Housing - Low Beam - Chrome
Part Number: 953-34131
Ships on 10/21/2026Lowest Price Guarantee$9399
UNITED PACIFIC
34132 ULTRALIT Heated 4 in. x 6 in. LED Headlight With Glass Lens & Aluminum Housing - High Beam - Chrome
Part Number: 953-34132
$10199
Ships on 10/21/2026Lowest price guarantee
UNITED PACIFIC
34132 ULTRALIT Heated 4 in. x 6 in. LED Headlight With Glass Lens & Aluminum Housing - High Beam - Chrome
Part Number: 953-34132
Ships on 10/21/2026Lowest Price Guarantee$10199
UNITED PACIFIC
31150 ULTRALIT 4 in. x 6 in. Rectangular LED Headlight With Amber LED Position Light - Low Beam
Part Number: 953-31150
$15599
Ships on 10/13/2026Lowest price guarantee
UNITED PACIFIC
31150 ULTRALIT 4 in. x 6 in. Rectangular LED Headlight With Amber LED Position Light - Low Beam
Part Number: 953-31150
Ships on 10/13/2026Lowest Price Guarantee$15599
UNITED PACIFIC
34133 ULTRALIT Heated 4 in. x 6 in. LED Headlight With Glass Lens & Aluminum Housing - Low Beam - Black
Part Number: 953-34133
$9199
Ships on 10/21/2026Lowest price guarantee
UNITED PACIFIC
34133 ULTRALIT Heated 4 in. x 6 in. LED Headlight With Glass Lens & Aluminum Housing - Low Beam - Black
Part Number: 953-34133
Ships on 10/21/2026Lowest Price Guarantee$9199
GOODYEAR BELTS
1080505 Serpentine Belt, Fits Select Makes/Models, K Profile, 8 Ribs, 50.5 in. Effective Length
Part Number: 498-1080505
$3771
Ships on 10/13/2026Lowest price guarantee
GOODYEAR BELTS
1080505 Serpentine Belt, Fits Select Makes/Models, K Profile, 8 Ribs, 50.5 in. Effective Length
Part Number: 498-1080505
Ships on 10/13/2026Lowest Price Guarantee$3771
GOODYEAR BELTS
1080545 Serpentine Belt, Fits Select Makes/Models, K Profile, 8 Ribs, 54.5 in. Effective Length
Part Number: 498-1080545
$3598
Ships on 10/13/2026Lowest price guarantee
GOODYEAR BELTS
1080545 Serpentine Belt, Fits Select Makes/Models, K Profile, 8 Ribs, 54.5 in. Effective Length
Part Number: 498-1080545
Ships on 10/13/2026Lowest Price Guarantee$3598
FAIRCHILD AUTOMOTIVE
MCH1178 Radiator Hose 1969-1974 Alfa Romeo Berlina, Replaces Dayco 70704
Part Number: 443-MCH1178
$799
Ships on 10/13/2026Lowest price guarantee
FAIRCHILD AUTOMOTIVE
MCH1178 Radiator Hose 1969-1974 Alfa Romeo Berlina, Replaces Dayco 70704
Part Number: 443-MCH1178
Ships on 10/13/2026Lowest Price Guarantee$799
![PowerBand V-Belt for Select 1987-1999 Freightliner and Other Makes [2 Strands, HC50 Section, 52.020 in. Outside Circumference]](https://www.jegs.com/images/mini_100/400/465/465-2_9510pb.jpg)
GATES
PowerBand V-Belt for Select 1987-1999 Freightliner and Other Makes [2 Strands, HC50 Section, 52.020 in. Outside Circumference]
Part Number: 465-2/9510PB
$12280
Ships on 10/16/2026Lowest price guarantee![PowerBand V-Belt for Select 1987-1999 Freightliner and Other Makes [2 Strands, HC50 Section, 52.020 in. Outside Circumference]](https://www.jegs.com/images/mini_200/400/465/465-2_9510pb.jpg)
GATES
PowerBand V-Belt for Select 1987-1999 Freightliner and Other Makes [2 Strands, HC50 Section, 52.020 in. Outside Circumference]
Part Number: 465-2/9510PB
Ships on 10/16/2026Lowest Price Guarantee$12280
![Heavy-Duty Thermostat for Select 1981-2000 Ford, Peterbilt and Other Makes [175 Degree F]](https://www.jegs.com/images/mini_100/400/465/465-33549.jpg)
GATES
Heavy-Duty Thermostat for Select 1981-2000 Ford, Peterbilt and Other Makes [175 Degree F]
Part Number: 465-33549
$12284
Ships on 10/16/2026Lowest price guarantee![Heavy-Duty Thermostat for Select 1981-2000 Ford, Peterbilt and Other Makes [175 Degree F]](https://www.jegs.com/images/mini_200/400/465/465-33549.jpg)
GATES
Heavy-Duty Thermostat for Select 1981-2000 Ford, Peterbilt and Other Makes [175 Degree F]
Part Number: 465-33549
Ships on 10/16/2026Lowest Price Guarantee$12284
![FleetRunner Micro-V Serpentine Belt for Select 1993-2003 International and Other Makes [6-Rib, 41.500 in. Outside Circumference]](https://www.jegs.com/images/mini_100/400/465/465-k060415hd.jpg)
GATES
FleetRunner Micro-V Serpentine Belt for Select 1993-2003 International and Other Makes [6-Rib, 41.500 in. Outside Circumference]
Part Number: 465-K060415HD
$3729
Ships on 10/16/2026Lowest price guarantee![FleetRunner Micro-V Serpentine Belt for Select 1993-2003 International and Other Makes [6-Rib, 41.500 in. Outside Circumference]](https://www.jegs.com/images/mini_200/400/465/465-k060415hd.jpg)
GATES
FleetRunner Micro-V Serpentine Belt for Select 1993-2003 International and Other Makes [6-Rib, 41.500 in. Outside Circumference]
Part Number: 465-K060415HD
Ships on 10/16/2026Lowest Price Guarantee$3729
