Thomas Belt Tensioners

Belt Tensioners for Your Thomas

Replacing your Thomas Belt Tensioners shouldn’t cost you an arm and a leg. That’s why we offer plenty of options for you to choose from, making it easy to find top rated Belt Tensioners brands at a fraction of the cost.

Essential Thomas Belt Tensioners

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89441)

Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque

from

$114.99
For heavy-duty diesel engine accessory drive applications, Dayco’s HD automatic belt tensioner is designed to handle higher torque and power pulses. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability and the pat

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
See More

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89479)

Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque

from

$148.99
For heavy-duty diesel engine accessory drive applications, Dayco’s HD automatic belt tensioner is designed to handle higher torque and power pulses. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability and the pat

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
See More

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Built To Outperform And Outlast OE Parts (Part No.89490)

Serpentine Belt Tensioner; 1 Piece, HD, Built To Outperform And Outlast OE Parts

from

$128.99
For heavy-duty diesel engine accessory drive applications, Dayco’s HD automatic belt tensioner is designed to handle higher torque and power pulses. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability and the pat

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Rust resistant construction
See More

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89444)

Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque

from

$103.99
For heavy-duty diesel engine accessory drive applications, Dayco’s HD automatic belt tensioner is designed to handle higher torque and power pulses. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability and the pat

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
See More

Litens – Serpentine Belt Tensioner: 1 Piece (Part No.910003A)

Serpentine Belt Tensioner: 1 Piece

from

$206.99
This Heavy Duty Truck and Bus tensioner is designed and engineered Litens, the world’s largest supplier of original equipment (O.E.) belt tensioners in the world. The Litens replacement part meets all form, fit, and performance characteristics of the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). This part is manufactured to meet or exceed the performance and life specifications of the O.E. part. The part features a premium chrome-silicon steel spring, internal damping, a “lift-lug” feature for ease of installation, Tandem 6303 ball bearings, a molded locator pin for precise installation, and a forged steel pulley. Fits a large variety of Makes, Models, and Engines. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More

Litens – Serpentine Belt Tensioner: 1 Piece (Part No.910007A)

Serpentine Belt Tensioner: 1 Piece

from

$171.99
This Heavy Duty Truck and Bus tensioner is designed and engineered by Litens – the world’s largest supplier of original equipment (O.E.) belt tensioners in the world. The Litens replacement part meets all form, fit, and performance characteristics of the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). This part is manufactured to meet or exceed the performance and life specifications of the O.E. part. The part features a premium chrome-silicon steel spring, internal damping, a “lift-lug” feature for ease of installation, Tandem 6303 ball bearings, a molded locator pin for precise installation, and a forged steel pulley. Specifically designed for a wide variety of Trucks and Buses with a Cummins ISB (5.9L) engine. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89450)

Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque

from

$119.99
For heavy-duty diesel engine accessory drive applications, Dayco’s HD automatic belt tensioner is designed to handle higher torque and power pulses. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability and the pat

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
See More

Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38511)

FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner

from

$229.99
Product Features:
  • Optimized components engineered for maximum strength and durability
  • Patented design provides superior belt alignment and tension for improved drive efficiency and life
  • Patented labyrinth seal prevents contamination of internal parts for maximum durability and service life
  • Long-lasting steel pulleys with dust shields to protect internal bearings from contamination
  • Double row bearings carry more load and last up to 3X longer than two individual bearings
  • Chrome-silicone round torsion spring for less +ex-fatigue than +at-spring designs
  • Patented damping mechanism provides maximum stability, reducing vibration and increasing the life of the belt, tensioner and other accessory drive components
See More

Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38518)

FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner

from

$192.99
Product Features:
  • Optimized components engineered for maximum strength and durability
  • Patented design provides superior belt alignment and tension for improved drive efficiency and life
  • Patented labyrinth seal prevents contamination of internal parts for maximum durability and service life
  • Long-lasting steel pulleys with dust shields to protect internal bearings from contamination
  • Double row bearings carry more load and last up to 3X longer than two individual bearings
  • Chrome-silicone round torsion spring for less +ex-fatigue than +at-spring designs
  • Patented damping mechanism provides maximum stability, reducing vibration and increasing the life of the belt, tensioner and other accessory drive components
See More

Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38516)

FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner

from

$190.99
Product Features:
  • Optimized components engineered for maximum strength and durability
  • Patented design provides superior belt alignment and tension for improved drive efficiency and life
  • Patented labyrinth seal prevents contamination of internal parts for maximum durability and service life
  • Long-lasting steel pulleys with dust shields to protect internal bearings from contamination
  • Double row bearings carry more load and last up to 3X longer than two individual bearings
  • Chrome-silicone round torsion spring for less +ex-fatigue than +at-spring designs
  • Patented damping mechanism provides maximum stability, reducing vibration and increasing the life of the belt, tensioner and other accessory drive components
See More

Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38517)

FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner

from

$175.99
Product Features:
  • Optimized components engineered for maximum strength and durability
  • Patented design provides superior belt alignment and tension for improved drive efficiency and life
  • Patented labyrinth seal prevents contamination of internal parts for maximum durability and service life
  • Long-lasting steel pulleys with dust shields to protect internal bearings from contamination
  • Double row bearings carry more load and last up to 3X longer than two individual bearings
  • Chrome-silicone round torsion spring for less +ex-fatigue than +at-spring designs
  • Patented damping mechanism provides maximum stability, reducing vibration and increasing the life of the belt, tensioner and other accessory drive components
See More

Litens – Serpentine Belt Tensioner: 1 Piece (Part No.910021A)

Serpentine Belt Tensioner: 1 Piece

from

$171.99
This Heavy Duty Truck and Bus tensioner is designed and engineered by Litens – the world’s largest supplier of original equipment (O.E.) belt tensioners in the world. The Litens replacement part meets all form, fit, and performance characteristics of the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). This part is manufactured to meet or exceed the performance and life specifications of the O.E. part. The part features a premium chrome-silicon steel spring, internal damping, a “lift-lug” feature for ease of installation, Tandem 6303 ball bearings, a molded locator pin for precise installation, and a forged steel pulley. Specifically designed for a wide variety of trucks and buses with a Cummins ISB/ISC/ISL engine. New mounting bolt included. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More

Litens – Serpentine Belt Tensioner: 1 Piece (Part No.910011A)

Serpentine Belt Tensioner: 1 Piece

from

$147.99
This Heavy Duty Truck and Bus tensioner is designed and engineered by Litens – the world’s largest supplier of original equipment (O.E.) belt tensioners in the world. The Litens replacement part meets all form, fit, and performance characteristics of the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). This part is manufactured to meet or exceed the performance and life specifications of the O.E. part. The part features a premium chrome-silicon steel spring, internal damping, a “lift-lug” feature for ease of installation, Tandem 6303 ball bearings, a molded locator pin for precise installation, and a forged steel pulley. Specifically designed for a wide variety of trucks and buses with a Cummins engine. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89481)

Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque

from

$146.99
For heavy-duty diesel engine accessory drive applications, Dayco’s HD automatic belt tensioner is designed to handle higher torque and power pulses. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability and the pat

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
See More

Litens – Serpentine Belt Tensioner: 1 Piece (Part No.910567A)

Serpentine Belt Tensioner: 1 Piece

from

$146.99
This Heavy Duty Truck and Bus tensioner is designed and engineered by one of the world’s largest supplier of original equipment (O.E.) belt tensioners in the world. The Litens replacement part meets all form, fit, and performance characteristics of the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). This part is manufactured to meet or exceed the performance and life specifications of the O.E. part. The part features a premium chrome-silicon steel spring, internal damping, a “lift-lug” feature for ease of installation, Tandem 6303 ball bearings, a molded locator pin for precise installation, and a forged steel pulley. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89482)

Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque

from

$142.99
For heavy-duty diesel engine accessory drive applications, Dayco’s HD automatic belt tensioner is designed to handle higher torque and power pulses. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability and the pat

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
See More

Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38627)

FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner

from

$141.99
Product Features:
  • Optimized components engineered for maximum strength and durability
  • Patented design provides superior belt alignment and tension for improved drive efficiency and life
  • Patented labyrinth seal prevents contamination of internal parts for maximum durability and service life
  • Long-lasting steel pulleys with dust shields to protect internal bearings from contamination
  • Double row bearings carry more load and last up to 3X longer than two individual bearings
  • Chrome-silicone round torsion spring for less +ex-fatigue than +at-spring designs
  • Patented damping mechanism provides maximum stability, reducing vibration and increasing the life of the belt, tensioner and other accessory drive components
See More

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89483)

Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque

from

$136.99
For heavy-duty diesel engine accessory drive applications, Dayco’s HD automatic belt tensioner is designed to handle higher torque and power pulses. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability and the pat

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
See More

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89473)

Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque

from

$132.99
For heavy-duty diesel engine accessory drive applications, Dayco’s HD automatic belt tensioner is designed to handle higher torque and power pulses. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability and the pat

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
See More

Litens – Serpentine Belt Tensioner: 1 Piece (Part No.910541A)

Serpentine Belt Tensioner: 1 Piece

from

$122.99
This Heavy Duty Truck and Bus tensioner is designed and engineered by one of the world’s largest supplier of original equipment (O.E.) belt tensioners in the world. The Litens replacement part meets all form, fit, and performance characteristics of the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). This part is manufactured to meet or exceed the performance and life specifications of the O.E. part. The part features a premium chrome-silicon steel spring, internal damping, a “lift-lug” feature for ease of installation, Tandem 6303 ball bearings, a molded locator pin for precise installation, and a forged steel pulley. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Built To Outperform And Outlast OE Parts (Part No.89486)

Serpentine Belt Tensioner; 1 Piece, HD, Built To Outperform And Outlast OE Parts

from

$111.99
For heavy-duty diesel engine accessory drive applications, Dayco’s HD automatic belt tensioner is designed to handle higher torque and power pulses. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability and the pat

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Includes installation instructions
See More

Compare Deals on Thomas Belt Tensioners

Shop Thomas Belt Tensioners today. Advance Auto Parts carries top rated Belt Tensioners brands for your Thomas. Search through our selection of popular aftermarket or OEM parts, we are confident you can find the Belt Tensioners deal that will fit your vehicle hassle-free.

Compare before you buy, we offer customer reviews and star ratings on all of our Thomas Belt Tensioners. Once you have reviewed your options and selected the deal that fits your budget, all that is left for you to decide is how to have your new Thomas parts delivered. You can either have the Belt Tensioners shipped directly to you or you can pick them up at your local Advance Auto Parts store.

Start shopping below and watch your savings grow!