Peterbilt 378 Engine Pulleys
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Dayco®No Slack™ Heavy Duty Automatic Belt Tensioner Assembly (89447)No Slack™ Heavy Duty Automatic Belt Tensioner Assembly (89447) by Dayco®. Serpentine belt drives consist of a single belt that powers most, if not all, of the engine’s accessories. Designed to maintain constant tension on serpentine...Heavy duty cast aluminum spring case that resists cracking and fatigueSteel pivot tube which provides additional strength for critical torque requirements$172.12 - Dayco®No Slack™ Heavy Duty Automatic Belt Tensioner Assembly (89480)No Slack™ Heavy Duty Automatic Belt Tensioner Assembly (89480) by Dayco®. Serpentine belt drives consist of a single belt that powers most, if not all, of the engine’s accessories. Designed to maintain constant tension on serpentine...Heavy duty cast aluminum spring case that resists cracking and fatigueSteel pivot tube which provides additional strength for critical torque requirements$183.04
- Dayco®No Slack™ Heavy Duty Automatic Belt Tensioner Assembly (89419)No Slack™ Heavy Duty Automatic Belt Tensioner Assembly (89419) by Dayco®. Serpentine belt drives consist of a single belt that powers most, if not all, of the engine’s accessories. Designed to maintain constant tension on serpentine...Heavy duty cast aluminum spring case that resists cracking and fatigueSteel pivot tube which provides additional strength for critical torque requirements$138.60
- Dayco®No Slack™ Heavy Duty Automatic Belt Tensioner Assembly (89418)No Slack™ Heavy Duty Automatic Belt Tensioner Assembly (89418) by Dayco®. Serpentine belt drives consist of a single belt that powers most, if not all, of the engine’s accessories. Designed to maintain constant tension on serpentine...Heavy duty cast aluminum spring case that resists cracking and fatigueSteel pivot tube which provides additional strength for critical torque requirements$292.13
- Dayco®No Slack™ Heavy Duty Idler/Tensioner Pulley (89105)No Slack™ Heavy Duty Idler/Tensioner Pulley (89105) by Dayco®. Dayco's reputation for top performance idler and tensioner pulleys is a result of advanced automotive technologies employed in materials research, design engineering, and...Made with precision and quality in mindDesigned to meet your specific needs$37.36
- Dayco®No Slack™ Heavy Duty Idler/Tensioner Pulley (89102)No Slack™ Heavy Duty Idler/Tensioner Pulley (89102) by Dayco®. Dayco's reputation for top performance idler and tensioner pulleys is a result of advanced automotive technologies employed in materials research, design engineering, and...Made with precision and quality in mindDesigned to meet your specific needs$44.20
- Dayco®No Slack™ Heavy Duty Idler/Tensioner Pulley (89101)No Slack™ Heavy Duty Idler/Tensioner Pulley (89101) by Dayco®. Dayco's reputation for top performance idler and tensioner pulleys is a result of advanced automotive technologies employed in materials research, design engineering, and...Made with precision and quality in mindDesigned to meet your specific needs$35.43
- Gates®Accessory Belt Drive Kit (90K-38506HDC)Accessory Belt Drive Kit (90K-38506HDC) by Gates®. Gates is the largest global manufacturer of OE timing belts. This means Gates is able to cover the Aftermarket with timing belts that are OE-equivalent, or better, in service life and...Performing a complete system repair doesn't add much time, but adds a lot of value (and protects against returns)Without proper tension, even the best new belt can’t efficiently transfer power$194.39
- Gates®Accessory Belt Drive Kit (90K-38505HD)Accessory Belt Drive Kit (90K-38505HD) by Gates®. Gates is the largest global manufacturer of OE timing belts. This means Gates is able to cover the Aftermarket with timing belts that are OE-equivalent, or better, in service life and...Performing a complete system repair doesn't add much time, but adds a lot of value (and protects against returns)Without proper tension, even the best new belt can’t efficiently transfer power$113.93
- Gates®Accessory Belt Drive Kit (90K-38505HDA)Accessory Belt Drive Kit (90K-38505HDA) by Gates®. Gates is the largest global manufacturer of OE timing belts. This means Gates is able to cover the Aftermarket with timing belts that are OE-equivalent, or better, in service life and...Performing a complete system repair doesn't add much time, but adds a lot of value (and protects against returns)Without proper tension, even the best new belt can’t efficiently transfer power$89.90
- Gates®Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38532)Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38532) by Gates®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...Comprehensive line includes parts to fit cars, vans, SUVs, and light trucksFull line coverage for import, domestic, and heavy-duty cars, trucks, and vehicle applications$143.20
- Gates®Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38535)Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38535) by Gates®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...Comprehensive line includes parts to fit cars, vans, SUVs, and light trucksFull line coverage for import, domestic, and heavy-duty cars, trucks, and vehicle applications$127.64
- Gates®Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38590)Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38590) by Gates®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...Comprehensive line includes parts to fit cars, vans, SUVs, and light trucksFull line coverage for import, domestic, and heavy-duty cars, trucks, and vehicle applications$150.05
- Gates®Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38622)Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38622) by Gates®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...Comprehensive line includes parts to fit cars, vans, SUVs, and light trucksFull line coverage for import, domestic, and heavy-duty cars, trucks, and vehicle applications$127.86
- Gates®Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38514)Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38514) by Gates®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...Comprehensive line includes parts to fit cars, vans, SUVs, and light trucksFull line coverage for import, domestic, and heavy-duty cars, trucks, and vehicle applications$131.10
- Gates®Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38521)Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38521) by Gates®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...Comprehensive line includes parts to fit cars, vans, SUVs, and light trucksFull line coverage for import, domestic, and heavy-duty cars, trucks, and vehicle applications$209.70
- Gates®Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38505)Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38505) by Gates®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...Comprehensive line includes parts to fit cars, vans, SUVs, and light trucksFull line coverage for import, domestic, and heavy-duty cars, trucks, and vehicle applications$89.27
- Gates®Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38506)Green Stripe™ DriveAlign™ Heavy Duty Drive Belt Tensioner Assembly (38506) by Gates®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...Comprehensive line includes parts to fit cars, vans, SUVs, and light trucksFull line coverage for import, domestic, and heavy-duty cars, trucks, and vehicle applications$125.39
- Continental® ContiTech™Accessory Drive Belt (49563)Accessory Drive Belt (49563) by Continental® ContiTech™. This belt is designed with teeth molded directly into its surface to avoid slipping for reliable and efficient performance. Manufactured using the latest material technology,...OE quality product for safe, reliable, and efficient performanceManufactured using the latest material technology$185.48
- Continental® ContiTech™Elite™ Drive Belt Idler Pulley (49171)Elite™ Drive Belt Idler Pulley (49171) by Continental® ContiTech™. Every part in this assembly is engineered to look, install, and operate the same way or better than the factory parts. Every component meets original equipment...Original equipment equivalentFactory-like fit and dependability$58.50
- Continental® ContiTech™Elite™ Drive Belt Idler Pulley (49153)Elite™ Drive Belt Idler Pulley (49153) by Continental® ContiTech™. Every part in this assembly is engineered to look, install, and operate the same way or better than the factory parts. Every component meets original equipment...Original equipment equivalentFactory-like fit and dependability$27.61
- Continental® ContiTech™Elite™ Drive Belt Tensioner Assembly (49569)Elite™ Drive Belt Tensioner Assembly (49569) by Continental® ContiTech™. This belt tensioner assembly is constructed to meet OE requirements for fit, form, and function. It provides smooth, noiseless, and vibration-free operation...Constructed to match OE form, fit, and functionMaintains its correct alignment to the belt and correct accessory belt tension$139.55
- Continental® ContiTech™Elite™ Drive Belt Tensioner Assembly (49582)Elite™ Drive Belt Tensioner Assembly (49582) by Continental® ContiTech™. This belt tensioner assembly is constructed to meet OE requirements for fit, form, and function. It provides smooth, noiseless, and vibration-free operation...Constructed to match OE form, fit, and functionMaintains its correct alignment to the belt and correct accessory belt tension$169.23
- ACDelco®Professional™ Heavy Duty Belt Tensioner & Pulley Assembly (38505)Professional™ Heavy Duty Belt Tensioner & Pulley Assembly (38505) by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...Made with precision and quality in mindDesigned to meet your specific needs$102.85Save: $15.43 (15%)$87.42
- ACDelco®Professional™ Idler Pulley (36095)Professional™ Idler Pulley (36095) by ACDelco®. The ACDelco Professional, premium aftermarket Idler Pulley is designed for use on automobiles and light duty trucks as a locked center tensioning pulley, an automatic belt tensioner...Bearing is designed for application specific speed and load requirementsProvides reliable operation under severe conditions for year round performance$48.77Save: $8.34 (17%)$40.43
- ACDelco®Professional™ Idler Pulley (36225)Professional™ Idler Pulley (36225) by ACDelco®. The ACDelco Professional, premium aftermarket Idler Pulley is designed for use on automobiles and light duty trucks as a locked center tensioning pulley, an automatic belt tensioner...Bearing is designed for application specific speed and load requirementsProvides reliable operation under severe conditions for year round performance$48.65Save: $7.75 (16%)$40.90
- ACDelco®Professional™ Idler Pulley (36091)Professional™ Idler Pulley (36091) by ACDelco®. The ACDelco Professional, premium aftermarket Idler Pulley is designed for use on automobiles and light duty trucks as a locked center tensioning pulley, an automatic belt tensioner...Bearing is designed for application specific speed and load requirementsProvides reliable operation under severe conditions for year round performance$59.24Save: $8.88 (15%)$50.36
- ACDelco®Professional™ Upper Idler Pulley (36164)Professional™ Upper Idler Pulley (36164) by ACDelco®. The ACDelco Professional, premium aftermarket Idler Pulley is designed for use on automobiles and light duty trucks as a locked center tensioning pulley, an automatic belt...Bearing is designed for application specific speed and load requirementsProvides reliable operation under severe conditions for year round performance$98.59Save: $13.40 (14%)$85.19
- SKP®Drive Belt Idler Pulley (SK89101)Drive Belt Idler Pulley (SK89101) by SKP®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$11.71
- Dorman HD Solutions®Drive Belt TensionerDrive Belt Tensioner by Dorman HD Solutions®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...Made with precision and quality in mindDesigned to meet your specific needs$111.08 - $225.94
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- Engine Blocks
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- Valve Covers
- Valves & Valvetrain Parts
- Pistons, Rings & Connecting Rods
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- Intercoolers
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- Engine Management Systems
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- Oil Pumps
- Oil Pans, Drain Plugs & Dipsticks
- Engine Sensors, Relays, Switches
- Serpentine Belts & Auxiliary Drive Belts
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