2004 Mack MR Belt Tensioners

Essential 2004 Mack MR Belt Tensioners

Litens – Serpentine Belt Tensioner: 1 Piece (Part No.910543A)

Serpentine Belt Tensioner: 1 Piece

from

$107.99
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.
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Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38668)

FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner

from

$176.99
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
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Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38611)

FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner

from

$178.99
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
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Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89464)

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

from

$97.99
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
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Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38523)

FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner

from

$143.99
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.910136A)

Serpentine Belt Tensioner: 1 Piece

from

$139.99
This Heavy Duty Truck and Bus tensioner is designed, engineered, and manufactured 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. 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.910544A)

Serpentine Belt Tensioner: 1 Piece

from

$108.99
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. Includes a new mounting bolt for ease of installation. 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.89438)

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

from

$71.99
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.89449)

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

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
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
See More

Litens – Serpentine Belt Tensioner: 1 Piece (Part No.910008A)

Serpentine Belt Tensioner: 1 Piece

from

$122.99
This Heavy Duty Truck and Bus tensioner is designed, engineered and manufactured 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 Mack Trucks and Buses with E6/E7 (12.0L) 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

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 patented flat spring design prevents fluctuations to the tensioner body as its footprint doesn’t change when it’s under tension. This reduces the risk of belt noise and also helps avoid separation of the housing a key failure seen from competitive products. Dayco automatic belt tensioner H.D. also includes rugged pulleys with dual lifetime lubricated bearings to deliver long lasting, dependable service. Feature highly damped designs using a wave spring and a metal ring with a bonded polymeric surface that acts as a radial shock absorber for the tensioner arm while reducing contamination.

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.910123A)

Serpentine Belt Tensioner: 1 Piece

from

$144.99
This accessory drive 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 6303 ball bearing and high strength steel pulley for long life and durability. Specifically designed for 08-10 Mack: 04 MR Series AMI Diesel, 05 MR Series AMI Diesel, 06 CV Series AMI Diesel, and 07 MR and LE Series AMI Diesel. 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

2004 Mack MR Belt Tensioners

Maybe you’re in the middle of a full rebuild of that 2004 Mack MR. Maybe you just need a couple of Belt Tensioners. Either way, Advance Auto Parts has 6 different Belt Tensioners in our inventory ranging from $71.99 to $176.99. That means you can find the exact parts or products you need to keep that 2004 Mack MR running smoothly.

Belt Tensioners are only as good as their brand. We stock 3 different brands to make sure you have plenty of trusted parts to choose from for your 2004 Mack MR. Dayco, Gates, and Litens are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Belt Tensioners for your 2004 Mack MR, but don’t take our word for it – read our customer ratings and reviews and buy with confidence.

So if you’re in the market for aftermarket Belt Tensioners to keep your 2004 Mack MR rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Belt Tensioners Brands To Make Your 2004 Mack MR Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 2004 Mack MR demands trusted brand parts and products to keep it running. Many trusted brands of Belt Tensioners make up Advance Auto Parts’ inventory, and all are ready to help make your MR the best it can be. Be sure to browse some of our top Belt Tensioners brands and parts.

FAQs for 2004 Mack MR Belt Tensioners

What are the most purchased Belt Tensioners for the 2004 Mack MR?

Out of 6 Belt Tensioners for the 2004 Mack MR, the most popular in our inventory are:
Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque
from $119.99
This product is not rated
Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque
Belt Tensioner Assemblies
Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque
from $97.99
This product is not rated
Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque
Belt Tensioner Assemblies
Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque
from $71.99
This product is not rated
Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque
Belt Tensioner Assemblies