2004 Mack MR Belts and Hoses

Name: DriveAlign Belt Drive Idler/Tensioner Pulley
Brand: Gates
SKU: 36092
Price: 80.99 USD

Below you will find various in-demand Mack Belts and Hoses, components and accessories for your 2004 MR. Advance Auto Parts has popular MR parts like Pulleys, Belt Tensioners, Engine Cooling Hoses and more. You’ll also find aftermarket and OEM Belts and Hoses for other MR model years including 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006, 2007 and more. Select a category of 2004 Mack MR Belts and Hoses below and start saving instantly.

Popular 2004 Mack MR Belts and Hoses Categories

Serpentine Belts

Belt Tensioner Assemblies

Idler Pulleys

Belt Tensioner Pulleys

Upper Radiator Hoses

V-Belts

Drive Belt Idler Assemblies

Essential Belts and Hoses for 2004 Mack MRs

from

$80.99

Gates is a leading manufacturer of Original Equipment (OE) idler pulleys. Gates DriveAlign(R) Idler Pulleys meet or exceed OE specifications. High quality, high strength bearings run cooler and last longer than original bearings. DriveAlign Idler Pulleys are built to last by resisting dirt, salt, and other under-hood contaminants. Designed for use on automobiles and light trucks as locked center tensioning, automatic belt tensioning and idler pulleys.

Product Features:

Steel and thermoplastic construction designed to tight manufacturing tolerances for durability and quality performance.
Built to last with a superior resistance to dirt, salt, chemicals and other under-hood contaminants
OE-quality fit for virtually every domestic or import vehicle on the road today
Bearings meet or exceed OE standards with application-specific speed and load requirements to withstand high temperatures under the hood
High-end bearings eliminate bearing noise
Mounting hardware included for some popular applications
Reliable operation under severe conditions

from

$61.99

Dayco idler/tensioner pulleys are built with smoother surfaces and tighter dimensional tolerances, which translates to less vibration and longer belt life. In addition to stamped, forged steel and powdered metal pulleys, Dayco also designs ultra-strong plastic pulleys with specially formulated glass-filled polymers that resist wear and tear. Premium lubricated ball bearings and double high temperature seals ensure peak bearing performance, the most critical element of a pulley’s service life.

Product Features:

Designed for the majority of automotive vehicle applications on the road today
High-quality materials help resist wear and improve belt life
Features premium lubricated bearings to extend service life
Meets or exceeds OE quality

from

$54.99

Designed to replace idler and tensioner pulleys for serpentine drives in heavy-duty diesel engine applications, Dayco HD idler/tensioner pulleys are machined from high-strength steel or powdered metal material to provide excellent wear resistance under harsh environments. Dual pressed-in bearings provide long bearing life and protection against the shock loads experienced by today’s diesel trucks.

Product Features:

Engineered for the demanding drive systems of today’s class 4-8 heavy-duty commercial trucks
Premium OE technology to ensure peak performance under extreme conditions
Utilizes 3D dimensional computer aided design (CAD) and finite element analysis (FEA) for optimal design and maximum structural integrity
Meets or exceeds OE quality

from

$58.99

This pulley is designed and engineered by Litens Automotive the inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part is made using the O.E. specified design and meets all performance and durability requirements. Heavy duty steel construction for long life and trouble-free performance. Designed for HD truck applications. 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.

from

$58.99

This pulley is supplied by Litens Automotive – inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part meets all performance and durability requirements. Fits Heavy Duty truck applications including Mack. 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.

Product Features:

Manufactured by the world’s largest Original Equipment supplier of accessory drive tensioners and pulleys.
Heavy Duty Steel Pulley for Mack Truck Applications
OE-spec sealed ball bearings with synthetic grease and double lip seals for long life

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

from

$178.99

Gates is a global leader in Original Equipment (OE) System Design. With a full line of tensioners globally, you can count on Gates to supply premium quality DriveAlign Automatic Belt Tensioners you can depend on.

Product Features:

Optimized components engineered for maximum strength and durability
Its patented design provides excellent belt alignment and tension, so drive life and efficiency are improved.
Patented labyrinth seal prevents contamination of internal parts for maximum durability and service life
Long-life steel pulleys with dust guards to protect internal bearings from contamination
Double-row bearings carry more load and last up to 3 times longer than two individual bearings
Chrome-silicone round torsion spring for less flex-fatigue than flat-spring designs
Its patented damping mechanism provides maximum stability, reduces vibration and extends the life of the belt, tensioner and other components of the accessory belt drives

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 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

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.

Product Features:

Designed, engineered, and manufactured by the world’s largest Original Equipment supplier of accessory drive tensioners and pulleys.
Internal “round spring” technology to provide constant belt tension and alignment throughout its service life. The internal damping design provides quiet, smooth, system performance.
Installation instructions included.
Heavy Duty Electro-deposited coated (e-coat) Steel Pulley for superior corrosion resistance.
Professional Mechanics will change this tensioner in approx. 1/2 hour
Accessory drive belts and tensioners are manufactured with similar design life targets. Since belt removal is required to change the tensioner, replacing both will extend the system service life and lower labor costs versus individual replacement.

from

$19.49

Dayco® High Performance V-Belt is the workhorse of the heavy-duty industry. Polyester cord provides maximum power transfer and tension holding capability for the life of the belt. The laminated construction helps absorb greater shock loads associated with diesel engines. These Dayco® High Performance V-Belt advantages translate into less downtime, lower maintenance costs, and increased dependability. Dayco’s High Performance V-Belt meets or exceeds SAE J636 and J637 specifications.

Product Features:

The High Performance V-Belt design delivers more flexibility and increases airflow around the belt, so it runs cooler and lasts longer than most competitive belts
Polyester cord provides maximum power transfer and tension holding capability for the life of the belt
The laminated construction helps absorb greater shock loads associated with diesel engines
Made with specially formulated rubber compounds, this belt is highly resistant to extreme under hood temperatures that can cause premature damage to under engineered rubber compounds

from

$43.99

Designed for the toughest applications, FleetRunner construction provides superior flexibility, stability, load capacity, and unsurpassed belt life. Patented materials deliver peak performance at extreme prolonged operating temperatures making this belt the ultimate problem solver. An advanced blend of EPDM rubber technology withstands the modern threats of deterioration from increased exposure to ozone and water-based coolants. FleetRunner does this all while providing the lowest cost per mile for fleets, including 3/4 and 1 ton pickups.

Product Features:

Patented material provides peak performance at extremely prolonged operating temperatures
Heavy-duty construction resists cracking, wear, oil and heat
A special compound ensures unmatched stability, load capacity and belt life.
Unique notch pattern offers greater flexibility for smaller diameter pulleys
Problem solver for troubled drives
Designed to save your fleet money and reduce downtime
Meets RMA oil and heat resistant standards and static conductivity requirements

from

$4.99

The Driveworks V-Belt is manufactured with top quality components to deliver the maximum power and performance on all passenger cars and light duty trucks in service today.

Product Features:

This belt is made with bottom cogs to provide the maximum flexibility and grip required on v-belt drives
Polyester cords provide extreme tension-holding capability for longer belt life
The raw edge belt design delivers the maximum gripping power
The highly engineered rubber compounds are resistant to under hood heat and ozone deterioration

from

$46.99

Patented material provides peak performance at extremely prolonged operating temperatures
Construction that resists cracking, wear, oil and heat
The special compound provides unprecedented flexibility, stability, load-bearing capacity and belt life.
Unique notch pattern offers greater flexibility for smaller diameter pulleys
Problem solver for troubled drives
Engineered to save your fleet money and reduce downtime
Meets RMA oil and heat resistant standards and static conductivity requirements

from

$24.79

Designed for the majority of automotive vehicle applications on the road today
High-quality materials help resist wear and improve belt life
Features premium lubricated bearings to extend service life
Meets or exceeds OE quality

from

$12.49

The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.

Product Features:

Constructed with heat and ozone resistant EPDM rubber
Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
Made with treated polyester cord to reduce belt stretch

from

$89.99

Import or domestic, car or truck, every vehicle can depend on the superior quality of Gates precision fit Micro-V belts. With advanced technology that matches the OE size, construction and materials, Gates Micro-V ensures optimal vehicle performance.

Product Features:

The special belt construction eliminates noise, reduces tension loss and solves transmission problems.
EPDM rubber constructions resist cracking on the rib surface
Meets or exceeds all OEM specifications
Replacement of the tensioner is recommended (if equipped)
Unique form grinding of each individual belt assures precise dimensional control.
Meets or exceeds SAE J1459, SAE J2432, and SAE J1596 specifications.

from

$46.99

Produced for heavy-duty vehicles and buses with multiple accessories, Dayco HD poly-V belts are made from EPDM material to resist heat and are compliant with the latest standards, guaranteeing resistance, reliability, low noise and longer service life. Engineered for high torque and power pulses, these belts also feature specially treated cords within the belt to resist stretching and ensure length stability.

Product Features:

Engineered to handle operating conditions with temperatures up to 130°C (266°F)
Designed for multiple accessories such as A/C, power steering pumps, alternators and water pumps
Capable of delivering excellent performance in high torque and high power pulse applications
Specially formulated treated cord insures length and tension stability on heavy duty diesel engine drives for the life of the belt

from

$23.99

Constructed with heat and ozone resistant EPDM rubber
Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
Made with treated polyester cord to reduce belt stretch

from

$39.99

Gates FleetRunner Micro-V Belts are designed for the toughest applications. FleetRunner construction provides superior flexibility, stability, load capacity, and unsurpassed belt life. Patented materials deliver peak performance at extreme prolonged operating temperatures, making this belt the ultimate problem solver. An advanced blend of EPDM rubber technology withstands the modern threats of deterioration from increased exposure to ozone and water-based coolants. FleetRunner does this all while providing the lowest cost per mile for fleets, including 3/4 and 1 ton pickups.

Product Features:

Patented material provides maximum performance at extreme, extended operating temperatures
Crack and wear resistant construction, even in extreme temperatures
The special compound provides unprecedented flexibility, stability, load-carrying capacity and belt life.
Problem solver designed for the toughest applications
Consistently outperforms other heavy-duty serpentine belts on the market
Designed to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$53.99

Special belt construction eliminates belt noise, reduces tension loss and solves problem drive applications
EPDM rubber constructions resist cracking on the rib surface
Meets or exceeds all specifications from the Original Equipment Manufacturer
It is recommended to replace the tensioner (if equipped)
Unique form grinding of each individual belt assures precise dimensional control.
Meets or exceeds SAE J1459, SAE J2432, and SAE J1596 specifications.

from

$38.49

Engineered to handle operating conditions with temperatures up to 130°C (266°F)
Designed for multiple accessories such as A/C, power steering pumps, alternators and water pumps
Capable of delivering excellent performance in high torque and high power pulse applications
Specially formulated treated cord insures length and tension stability on heavy duty diesel engine drives for the life of the belt

from

$1.99

Stick hose designed for demanding heavy-duty coolant/air applications. Approved for marine applications.

Product Features:

Cover marked in 1-inch increments to facilitate approximate cutting lengths, allows for “bespoke” installations.
Designed with compounds that resist electrochemical degradation
Approved for marine applications.
Exceeds SAE 20R1 Type EC (Class D-1 Tube, and Cover, Standard Wall)
Temperature Range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
Note: For a maintenance-free connection, use PowerGrip SB clamps
Caution: Do not use for fuel or oil transportation applications.
PLEASE NOTE: Item is priced and sold by the inch. See store for details.

from

$0.99

The Dayco Straight Radiator Hose is designed for a wide range of light and heavy-duty truck applications where the radiator hose routing is relatively straight. Note: This hose is NOT suitable for fuel or oil transfer.

Product Features:

Meets SAE J20R4, Class D-2 requirements.
Features a high strength knitted reinforcement and synthetic EPDM rubber construction
Resistant to standard coolants, ozone and other detrimental environmental elements

from

$1.79

Designed for a wide range of light and heavy duty truck applications where the radiator hose routing is relatively straight, Dayco’s Straight Radiator Hose features knitted einforcement and synthetic EPDM rubber construction. It meets SAE J20R4, Class D-2 requirements and provides high strength and resistance to ozone and other detrimental environmental elements, coolants, and temperature variations from -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C). Note: This hose is NOT suitable for fuel or oil transfer.

Product Features:

Meets SAE J20R4, Class D-2 requirements
Features a high strength knitted reinforcement and synthetic EPDM rubber construction
Resistant to standard coolants, ozone and other detrimental environmental elements
Works well in temperatures ranging from -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C)
PLEASE NOTE: Priced and sold by inch. See store for details.

from

$1.79

Meets SAE J20R4, Class D-2 requirements
Features a high strength knitted reinforcement and synthetic EPDM rubber construction
Resistant to standard coolants, ozone and other detrimental environmental elements
Works well in temperatures ranging from -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C)
PLEASE NOTE: Priced and sold by inch. See store for details.

Upgrade your 2004 Mack MR with Top-Quality Belts and Hoses

When it comes to maintaining or upgrading your 2004 Mack MR, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Mack or enhancing its overall performance, Belts and Hoses are key to keeping your MR functioning at its best. At Advance Auto Parts, we offer a wide selection of 22 Belts and Hoses for the 2004 Mack MR, designed to meet your needs without breaking the bank. From Pulley replacements to Belt Tensioners upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Belts and Hoses for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Belts and Hoses for your 2004 Mack MR at great prices. Our Belts and Hoses inventory for this model ranges from just $1.79 to $176.99, with an average price of $64.04. Our 22 Belts and Hoses in stock come from 4 trusted brands, so you’re sure to find the right part for your 2004 Mack MR without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2004 Mack MR, we stock popular OEM and aftermarket Belts and Hoses from top names like Dayco DriveWorks, and more. Dayco Belts and Hoses start at just $24.79 and boast an impressive 4.5 stars average rating from customers. With 146 customer reviews and counting, our 2004 Mack MR Belts and Hoses have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Belts and Hose upgrades. Explore related part types like Batteries and Chargers, Fluids and Chemicals and more to make sure your 2004 Mack MR is always ready to roll. We’re committed to providing you with everything you need to keep your MR in top shape, all in one place. Start shopping confidently below for your 2004 Mack MR!

Best-Selling Pulleys for 2004 Mack MRs

Enhance the driving experience in your Mack with 4 quality Pulley components, starting at $54.99.

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from

$54.99

Engineered for the demanding drive systems of today’s class 4-8 heavy-duty commercial trucks
Premium OE technology to ensure peak performance under extreme conditions
Utilizes 3D dimensional computer aided design (CAD) and finite element analysis (FEA) for optimal design and maximum structural integrity
Meets or exceeds OE quality

from

$107.99

Steel and thermoplastic construction designed to tight manufacturing tolerances for high durability and quality performance
Built to last with superior resistance to dirt, salt, chemicals, and other engine compartment contaminants.
Original equipment quality suitable for virtually all domestic and import vehicles in today’s fleet
The bearings meet or exceed OE standards with application-specific speed and load requirements, to withstand high temperatures under the hood.
Premium bearings eliminate bearing noise
Mounting hardware included for some popular applications
Reliable operation under severe conditions

from

$61.99

Designed for the majority of automotive vehicle applications on the road today
High-quality materials help resist wear and improve belt life
Features premium lubricated bearings to extend service life
Meets or exceeds OE quality

from

$58.99

Manufactured by the world’s largest Original Equipment supplier of accessory drive tensioners and pulleys.
Heavy Duty Steel Pulley for Mack Truck Applications
OE-spec sealed ball bearings with synthetic grease and double lip seals for long life

Most Popular 2004 Mack MR Belt Tensioners

Customize your Mack with 6 Belt Tensioners products like Belt Tensioner Assemblies, all priced under $176.99.

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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

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

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.

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.

Product Features:

Designed and engineered by one of the world’s largest Original Equipment suppliers of accessory drive tensioners and pulleys.
Internal “round spring” technology to provide constant belt tension and alignment throughout its service life. The internal damping design provides quiet, smooth, system performance.
Installation instructions included.
Heavy Duty Electro-deposited coated (e-coat) Steel Pulley for superior corrosion resistance.
Professional Mechanics will change this tensioner in approx. 1/2 hour
Accessory drive belts and tensioners are manufactured with similar design life targets. Since belt removal is required to change the tensioner, replacing both will extend the system service life and lower labor costs versus individual replacement.

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 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

from

$71.99

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

Top Picks for 2004 Mack MR Engine Cooling Hoses

Upgrade Mack MRs with top-quality Engine Cooling Hoses parts, including 2 OEM and aftermarket selections for your 2004 model.

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from

$1.79

Meets SAE J20R4, Class D-2 requirements
Features a high strength knitted reinforcement and synthetic EPDM rubber construction
Resistant to standard coolants, ozone and other detrimental environmental elements
Works well in temperatures ranging from -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C)
PLEASE NOTE: Priced and sold by inch. See store for details.

from

$1.79

Meets SAE J20R4, Class D-2 requirements
Features a high strength knitted reinforcement and synthetic EPDM rubber construction
Resistant to standard coolants, ozone and other detrimental environmental elements
Works well in temperatures ranging from -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C)
PLEASE NOTE: Priced and sold by inch. See store for details.

In-Demand Serpentine and V Belts for 2004 Mack MRs

Select from 10 premium Serpentine and V Belts parts for your 2004 Mack MR, with prices ranging from $5.29 to $77.99.

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from

$23.99

Constructed with heat and ozone resistant EPDM rubber
Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
Made with treated polyester cord to reduce belt stretch

from

$39.99

Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mile

Product Features:

Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
Engineered to help address noise issues caused by the belt drive
Capable of handling more extreme temperatures and workloads

from

$24.79

Designed for the majority of automotive vehicle applications on the road today
High-quality materials help resist wear and improve belt life
Features premium lubricated bearings to extend service life
Meets or exceeds OE quality

from

$19.49

The High Performance V-Belt design delivers more flexibility and increases airflow around the belt, so it runs cooler and lasts longer than most competitive belts
Polyester cord provides maximum power transfer and tension holding capability for the life of the belt
The laminated construction helps absorb greater shock loads associated with diesel engines
Made with specially formulated rubber compounds, this belt is highly resistant to extreme under hood temperatures that can cause premature damage to under engineered rubber compounds

from

$61.99

Patented material provides peak performance at prolonged extreme operating temperatures
Construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched flexibility, stability, load capacity and belt life
Problem solver designed for the toughest applications
Consistently outperforms other heavy-duty coil belts on the market
Designed to save your fleet money and reduce downtime
Replacement of the tensioner is recommended (if equipped)

from

$77.99

The patented material provides optimal performance at prolonged extreme operating temperatures.
Crack and wear resistant construction, even in extreme temperatures
The special compound provides unprecedented flexibility, stability, load-carrying capacity and belt life.
Problem solver designed for the toughest applications
Consistently outperforms other heavy-duty coil belts on the market
Designed to save your fleet’s money and reduce downtime
It is recommended to replace the tensioner (if equipped)

from

$53.99

Special belt construction eliminates belt noise, reduces tension loss and solves problem drive applications
EPDM rubber constructions resist cracking on the rib surface
Meets or exceeds all specifications from the Original Equipment Manufacturer
It is recommended to replace the tensioner (if equipped)
Unique form grinding of each individual belt assures precise dimensional control.
Meets or exceeds SAE J1459, SAE J2432, and SAE J1596 specifications.

from

$44.99

The special belt construction eliminates belt noise, reduces tension loss, and solves problems in drive applications.
EPDM rubber constructions resist cracking on the surface of the ribs
Meets or exceeds all OEM specifications
It is recommended to replace the tensioner (if equipped)
Unique form grinding of each individual belt assures precise dimensional control.
Meets or exceeds SAE J1459, SAE J2432, and SAE J1596 specifications.

from

$39.49

Engineered to handle operating conditions with temperatures up to 130°C (266°F)
Designed for multiple accessories such as A/C, power steering pumps, alternators and water pumps
Capable of delivering excellent performance in high torque and high power pulse applications
Specially formulated treated cord insures length and tension stability on heavy duty diesel engine drives for the life of the belt

from

$5.29

The Driveworks V-Belt is manufactured with top quality components to deliver the maximum power and performance on all passenger cars and light duty trucks in service today.

Product Features:

This belt is made with bottom cogs to provide the maximum flexibility and grip required on v-belt drives
Polyester cords provide extreme tension-holding capability for longer belt life
The raw edge belt design delivers the maximum gripping power
The highly engineered rubber compounds are resistant to under hood heat and ozone deterioration

Top-Rated Belts and Hoses Brands For Your 2004 Mack MR

Shop for the best-rated brands offering Belts and Hoses and other products for your 2004 Mack MRs. Below you’ll find some of our best rated Belts and Hoses from Dayco and DriveWorks, and more. Belts and Hoses from these brands that fit a 2004 MR start at just $23.99 and are rated as high as 4.5 stars. OEM and aftermarket Belts and Hoses don’t get more top quality, durable, and affordable than from the brands below.

Popular Dayco 2004 Mack MR Belts and Hoses

When it comes to maintaining or upgrading your 2004 Mack MR, using quality Belts and Hoses is essential to ensure durability and a perfect fit. Dayco ticks all of those boxes. We offer a wide selection of Dayco Belts and Hoses, specifically designed for the 2004 Mack MR. With over 2 Dayco brand Belts and Hoses in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $24.79, with an average price of just $32.39. Plus, with over 66 customer reviews and an average rating of 4.5 stars, you can trust that our Dayco Belts and Hoses will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from $24.79

(58)

Idler Pulley, Dayco

“Worked Great”

from $39.99

(8)

Poly Rib Belt Serpentine Belt; 71.5 Long, 6 Rib Count

“.”

Popular DriveWorks 2004 Mack MR Belts and Hoses

DriveWorks auto parts is one of the highest quality Belts and Hose brands in the market. Any 2004 Mack MR owner should feel confident when installing genuine DriveWorks parts in their vehicle. To ensure the best fit and performance for your 2004 MR, Advance Auto Parts carries a full inventory of 1 DriveWorks Belts and Hoses. Plus you will be keeping your Mack in peak condition while saving money because prices on these DriveWorks Belts and Hoses range up to $23.99, plus, with more than 7 customer reviews and an impressive 4.3 stars average rating, you can be confident the Fram Belts and Hoses below will deliver on both quality and value.

from $23.99

(7)

Poly Rib Belt Serpentine Belt; 71.5 Long, 6 Rib Count

“Correct part with a smile 😃”

FAQs for 2004 Mack MR Belts and Hoses

Which Belts and Hoses are best-sellers for 2004 Mack MRs?

Out of 22 Belts and Hoses that fit 2004 Mack MRs, the following parts are the top sellers:

V-Belt, Top Cog (3300105) – $19.49
FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (10913673) – $77.99
FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (10913530) – $61.99

What’s the price range for 2004 Mack MR Belts and Hoses?

Belts and Hose prices for the 2004 Mack MR start at $1.79 and go up to $176.99 for the most premium parts.

What’s the average price of a Belts and Hose for a 2004 Mack MR?

The average price for Belts and Hoses for the 2004 Mack MR is $64.04. Keep in mind the variety of part types within our Belts and Hose category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Belts and Hoses for other Mack MR model years?

Yes, we currently carry Belts and Hoses for 25 model years of Mack MRs between 1981 and 2007. Belts and Hoses are bought most frequently for the following model years: 2007, 2006, 2005, 2003, 2002, 2001, 2000, 1999, and 1998.

What are the cheapest Belts and Hoses for my 2004 Mack MR?

The cheapest 2004 Mack MR Belts and Hoses we carry in stock are:

Straight Radiator Hoses; EPDM Rubber, 2 1/2 Inch Inner Diameter (sold by inch) (10628460) – $1.79
Straight Coolant Hose, Standard, I.D. 2" (sold by inch) (10844509) – $1.79
Automotive V-Belt, Driveworks (5061652) – $5.29
V-Belt, Top Cog (3300105) – $19.49
Poly Rib Belt Serpentine Belt; 71.5 Long, 6 Rib Count (3340104) – $23.99

What are the top-rated Belts and Hoses that fit the 2004 Mack MR?

Out of 146 reviews by customers, our 2004 Mack MR Belts and Hoses have an average customer rating of . These are some of the highest-rated Belts and Hose types for the 2004 Mack MR and their top-rated products:

Serpentine and V Belts
- Poly Rib Belt Serpentine Belt; 71.5 Long, 6 Rib Count (3340104) – $23.99
- Poly Rib Belt Serpentine Belt; 71.5 Long, 6 Rib Count (3290135) – $39.99
- Idler Pulley, Dayco (15130060) – $24.79

What types of Belts and Hoses do you sell for my 2004 Mack MR?

As of 11/2/25, these are some of the most in-demand types of Belts and Hoses for a 2004 Mack MR:

Can I get help with 2004 Mack MR Belts and Hose orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Mack Belts and Hoses and more.

What is your return policy for Mack MR Belts and Hoses?

Advance Auto Parts keeps returns simple. For new Mack MR Belts and Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2004 Mack MR Belts and Hoses

Gates – DriveAlign Belt Drive Idler/Tensioner Pulley (Part No.36092)

Dayco – Idler Pulley, Dayco (Part No.89521)

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 46.27mm Width, Smooth (Part No.89102)

Litens – Tensioner Pulley: Direct Fit, Steel, 74mm Diameter (Part No.900121A)

Litens – Idler Pulley: Direct Fit, Steel, 112mm Diameter (Part No.900180A)

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

Gates – FleetRunner Heavy-Duty Automatic Belt Drive Tensioner (Part No.38611)

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89438)

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910136A)

Dayco – V-Belt, Top Cog (Part No.17395)

Gates – FleetRunner Heavy-Duty V-Belt (Part No.9610HD)

Driveworks – Automotive V-Belt, Driveworks (Part No.41517)

Gates – FleetRunner Heavy-Duty V-Belt (Part No.9640HD)

Dayco – Idler Pulley, Dayco (Part No.89051)

Driveworks – Poly Rib Belt Serpentine Belt; 33.5 Long, 5 Rib Count (Part No.335K5)

Gates – Micro-V Serpentine Drive Belt (Part No.K100610)

Dayco – Poly Rib Belt HD Serpentine Belt; 60.83 Long, 10 Rib Count, Heavy Duty (Part No.5100608)

Driveworks – Poly Rib Belt Serpentine Belt; 71.5 Long, 6 Rib Count (Part No.715K6)

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K050336HD)

Gates – Micro-V Serpentine Drive Belt (Part No.K100554)

Dayco – Poly Rib Belt, Premium, Dayco (Part No.5100600)

Gates – Green Stripe 2-Ply Straight Coolant Hose (Sold by foot) (Part No.24220)

Dayco – Straight Radiator Hoses; EPDM Rubber, 1 1/4 Inch Inner Diameter (sold by inch) (Part No.76125)

Dayco – Straight Radiator Hoses; EPDM Rubber, 2 1/2 Inch Inner Diameter (sold by inch) (Part No.76250)

Dayco – Straight Coolant Hose, Standard, I.D. 2" (sold by inch) (Part No.76200)

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 46.27mm Width, Smooth (Part No.89102)

Gates – DriveAlign Belt Drive Idler/Tensioner Pulley (Part No.36167)

Dayco – Idler Pulley, Dayco (Part No.89521)

Litens – Idler Pulley: Direct Fit, Steel, 112mm Diameter (Part No.900180A)

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

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

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910123A)

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910543A)

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

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89438)

Dayco – Straight Radiator Hoses; EPDM Rubber, 2 1/2 Inch Inner Diameter (sold by inch) (Part No.76250)

Dayco – Straight Coolant Hose, Standard, I.D. 2" (sold by inch) (Part No.76200)

Driveworks – Poly Rib Belt Serpentine Belt; 71.5 Long, 6 Rib Count (Part No.715K6)

Dayco – Poly Rib Belt Serpentine Belt; 71.5 Long, 6 Rib Count (Part No.5060715)

Dayco – Idler Pulley, Dayco (Part No.89051)

Dayco – V-Belt, Top Cog (Part No.17395)

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K060716HD)

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K100554HD)

Gates – Micro-V Serpentine Drive Belt (Part No.K100554)

Gates – Micro-V Serpentine Drive Belt (Part No.K060716)

Dayco – Poly Rib Belt HD Serpentine Belt; 55.5 Long, 10 Rib Count, Heavy Duty (Part No.5100555)

Driveworks – Automotive V-Belt, Driveworks (Part No.39517)