2012 Mack MRU Belts and Hoses

Name: Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 2.50" Diameter
Brand: Dayco
SKU: C71813
Price: 22.99 USD

Below you will find various in-demand Mack Belts and Hoses, components and accessories for your 2012 MRU. Advance Auto Parts has popular MRU parts like Serpentine and V Belts, Radiator Hoses, Pulleys and more. You’ll also find aftermarket and OEM Belts and Hoses for other MRU model years including 2010, 2011, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and more. Select a category of 2012 Mack MRU Belts and Hoses below and start saving instantly.

Popular 2012 Mack MRU Belts and Hoses Categories

Serpentine Belts

Belt Tensioner Assemblies

Idler Pulleys

Belt Tensioner Pulleys

Coolant Hoses

Drive Belt Idler Assemblies

Essential Belts and Hoses for 2012 Mack MRUs

from

$22.99

The Dayco curved radiator hose features knitted reinforcement, a protective sleeve and a synthetic EPDM rubber construction for high-strength performance, protection against abrasion and resistance to oil, mud, salt, road debris, ozone and coolants. It can also withstand temperature variations of -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose.

Product Features:

Meets SAE J20R4, Class D-1 requirements
Meets Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
Provides excellent protection against external elements

from

$57.99

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

$155.99

This Litens supplied pulley is manufactured to original equipment specifications. This part is specifically designed for Mack / Volvo applications. Heavy duty steel pulley construction ensures long life and trouble-free performance. This pulley meets or exceeds all original equipment fit, form, and performance characteristics. 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

$93.99

This genuine Litens Idler Pulley is manufactured by the original equipment part supplier to ensure proper form, fit, and performance. All O.E. pulley hardware is included to reduce install time. Part designed for Mack / Volvo applications. Like the OE part, all hardware is 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.

Product Features:

Manufactured by the Original Equipment supplier.
All OE Hardware included: Bolt, Dust Shield, Spacer.
Heavy Duty Steel Pulley
Smooth/Backside Pulley.
Idler Pulley – Fan and W.P. Drive

from

$125.99

Product Features:

Steel and thermoplastic construction designed to tight manufacturing tolerances for high 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 under hood temperatures
Premium bearings eliminate bearing noise
Mounting hardware included for some popular applications
Reliable operation under severe conditions

from

$104.99

This pulley is manufactured by one of the largest original equipment pulley suppliers to ensure proper fit and performance. This pulley is produced for MACK (CTP Series 2007, CXU Series 2008-15, GU Series 08-15, LEU 07-15, MRU 07-15) (Volvo 12-13 and VN Series 07-142007 Mack, CTP Series, Mack MP7 Diesel, Idler Pulley – Fan. It’s a serpentine belt routing application and conforms to original equipment material, tolerances, and specifications. This replacement part is made to the O.E. specified design and meets all performance and durability requirements. Heavy Duty Steel Pulley with double 6203 close tolerance ball bearings pocket for rugged durability and Electro-deposited coating for superior corrosion resistance. 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

$86.99

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

$57.99

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

$249.99

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

$161.99

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

$298.99

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

$199.99

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

$215.99

This Litens supplied tensioner is manufactured to original equipment specifications. This part is specifically designed for Mack / Volvo applications. Heavy duty steel pulley construction ensures long life and trouble-free performance. This tensioner meets or exceeds all original equipment fit, form, and performance characteristics. 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:

Heavy duty steel pulley construction
OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
All hardware included for easy installation (90mm Bolt), saving you time!
Installation instructions included

from

$305.99

This Litens supplied tensioner is manufactured to original equipment specifications. This part is specifically designed for Mack / Volvo applications. Heavy duty steel pulley construction ensures long life and trouble-free performance. This tensioner meets or exceeds all original equipment fit, form, and performance characteristics. For maximum performance and durability, always use genuine Litens components. 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 Litens, the largest original equipment tensioner and pulley supplier in the world, to ensure proper form, fit, and performance.
Internal “round spring” technology to provide constant belt tension and alignment throughout its service life.
Heavy duty steel pulley construction
OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
All hardware included for easy installation (Bolts), saving you time!
Installation instructions included

from

$55.99

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

$79.99

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

from

$95.99

DRIVEALIGN PULLEY

from

$90.99

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 peak performance at prolonged extreme operating temperatures
Heavy-duty construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched 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
Engineered to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$69.99

We are proud to offer this CARQUEST product line: CARQUEST Premium Serpentine Belts By Gates

Product Features:

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
Tensioner Replacement is Recommended (if equipped)

from

$64.99

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

$75.99

Patented material provides peak performance at prolonged extreme operating temperatures
Heavy-duty construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched 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
Engineered to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$66.99

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:

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
Tensioner Replacement 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

$94.99

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
Tensioner Replacement 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

$58.99

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
Tensioner Replacement 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

$100.99

Patented material provides peak performance at prolonged extreme operating temperatures
Heavy-duty construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched 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
Engineered to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$91.99

Patented material provides peak performance at prolonged extreme operating temperatures
Heavy-duty construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched 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
Engineered to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$103.99

Patented material provides peak performance at prolonged extreme operating temperatures
Heavy-duty construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched 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
Engineered to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$89.99

Patented material provides peak performance at prolonged extreme operating temperatures
Heavy-duty construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched 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
Engineered to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

Upgrade your 2012 Mack MRU with Top-Quality Belts and Hoses

When it comes to maintaining or upgrading your 2012 Mack MRU, 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 MRU functioning at its best. At Advance Auto Parts, we offer a wide selection of 33 Belts and Hoses for the 2012 Mack MRU, designed to meet your needs without breaking the bank. From Serpentine and V Belt replacements to Radiator Hoses 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 2012 Mack MRU at great prices. Our Belts and Hoses inventory for this model ranges from just $22.99 to $305.99, with an average price of $132.92. Our 33 Belts and Hoses in stock come from 3 trusted brands, so you’re sure to find the right part for your 2012 Mack MRU 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 2012 Mack MRU, we stock popular OEM and aftermarket Belts and Hoses from top names like Dayco, and more. Dayco Belts and Hoses start at just $22.99 and boast an impressive 5 stars average rating from customers. With 1 customer reviews and counting, our 2012 Mack MRU 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 2012 Mack MRU is always ready to roll. We’re committed to providing you with everything you need to keep your MRU in top shape, all in one place. Start shopping confidently below for your 2012 Mack MRU!

Best-Selling Serpentine and V Belts for 2012 Mack MRUs

Enhance the driving experience in your Mack with 11 quality Serpentine and V Belt components, starting at $30.49.

show more show less

from

$30.49

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

$75.99

Patented material provides peak performance at prolonged extreme operating temperatures
Heavy-duty construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched 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
Engineered to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$66.99

Engineered to handle operating conditions with temperatures up to 130 DegreeC (266 DegreeF)
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

$64.99

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

$86.99

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

$85.99

Patented material provides peak performance at prolonged extreme operating temperatures
Heavy-duty construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched 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
Engineered to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$116.99

For replacing original equipment belts on serpentine drives that require a higher degree of efficiency when transmitting power. Designed for small diameter pulleys and for use with or without automatic tensioners.

Product Features:

Specially designed to resist wear and cracking due to overall reduced thickness in construction.
Broad coverage on unique applications.
Custom setup for Gates specialized solution kits for Serpentine drives that cause problems from the OEM.

from

$91.99

Patented material provides peak performance at prolonged extreme operating temperatures
Heavy-duty construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched 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
Engineered to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$66.99

We are proud to offer this CARQUEST product line: CARQUEST Premium Serpentine Belts By Gates

Product Features:

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
Tensioner Replacement is Recommended (if equipped)

from

$60.99

Patented material provides peak performance at prolonged extreme operating temperatures
Heavy-duty construction resists cracking and wear, even at extreme temperatures
Special compound provides unmatched 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
Engineered to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$60.99

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
Tensioner Replacement 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.

Top Picks for 2012 Mack MRU Pulleys

Upgrade Mack MRUs with top-quality Pulleys parts, including 9 OEM and aftermarket selections for your 2012 model.

show more show less

from

$55.99

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

$93.99

Manufactured by the Original Equipment supplier.
All OE Hardware included: Bolt, Dust Shield, Spacer.
Heavy Duty Steel Pulley
Smooth/Backside Pulley.
Idler Pulley – Fan and W.P. Drive

from

$95.99

DRIVEALIGN PULLEY

from

$57.99

from

$155.99

from

$125.99

Product Features:

Steel and thermoplastic construction designed to tight manufacturing tolerances for high 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 under hood temperatures
Premium bearings eliminate bearing noise
Mounting hardware included for some popular applications
Reliable operation under severe conditions

from

$104.99

from

$85.99

This Litens pulley is manufactured by one of the largest original equipment pulley suppliers to ensure proper fit and performance. This pulley is produced for serpentine belt routing applications and conforms to original equipment material, tolerances, and specifications. This replacement part is made in Canada to the O.E. specified design and meets all performance and durability requirements. This Heavy duty Steel pulley is specifically designed for heavy duty truck and bus 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

$79.99

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

In-Demand Belt Tensioners for 2012 Mack MRUs

Select from 12 premium Belt Tensioners parts for your 2012 Mack MRU, with prices ranging from $125.99 to $305.99.

show more show less

from

$139.99

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

$215.99

Heavy duty steel pulley construction
OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
All hardware included for easy installation (90mm Bolt), saving you time!
Installation instructions included

from

$305.99

This Litens supplied tensioner is manufactured to original equipment specifications. This part is specifically designed for Mack / Volvo applications. Heavy duty steel pulley construction ensures long life and trouble-free performance. This tensioner meets or exceeds all original equipment fit, form, and performance characteristics. For maximum performance and durability, always use genuine Litens components. 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 Litens, the largest original equipment tensioner and pulley supplier in the world, to ensure proper form, fit, and performance.
Internal “round spring” technology to provide constant belt tension and alignment throughout its service life.
Heavy duty steel pulley construction
OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
All hardware included for easy installation (Bolts), saving you time!
Installation instructions included

from

$298.99

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

$249.99

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

$236.99

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

$199.99

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

$161.99

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

from

$146.99

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

$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

from

$132.99

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

from

$125.99

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

Top-Rated Belts and Hoses Brands For Your 2012 Mack MRU

Shop for the best-rated brands offering Belts and Hoses and other products for your 2012 Mack MRUs. Below you’ll find some of our best rated Belts and Hoses from Dayco, and more. Belts and Hoses from these brands that fit a 2012 MRU start at just $22.99 and are rated as high as 5 stars. OEM and aftermarket Belts and Hoses don’t get more top quality, durable, and affordable than from the brands below.

Popular Dayco 2012 Mack MRU Belts and Hoses

When it comes to maintaining or upgrading your 2012 Mack MRU, 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 2012 Mack MRU. With over 11 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 $22.99, with an average price of just $88.13. Plus, with over 1 customer reviews and an average rating of 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
$66.99

This product is not rated

Poly Rib Belt HD Serpentine Belt; 62.21 Long, 8 Rib Count, Heavy Duty

“”

from
$55.99

This product is not rated

Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 31.26mm Width, 8 Grooves

“”

from
$30.49

This product is not rated

Poly Rib Belt HD Serpentine Belt; 90 Long, 8 Rib Count, Heavy Duty

“”

FAQs for 2012 Mack MRU Belts and Hoses

Which Belts and Hoses are best-sellers for 2012 Mack MRUs?

Out of 33 Belts and Hoses that fit 2012 Mack MRUs, the following parts are the top sellers:

Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 31.26mm Width, 8 Grooves (20130041) – $55.99
Poly Rib Belt HD Serpentine Belt; 90 Long, 8 Rib Count, Heavy Duty (19270599) – $30.49
Poly Rib Belt HD Serpentine Belt; 63 Long, 8 Rib Count, Heavy Duty (19270371) – $64.99

What’s the price range for 2012 Mack MRU Belts and Hoses?

Belts and Hose prices for the 2012 Mack MRU start at $22.99 and go up to $305.99 for the most premium parts.

What’s the average price of a Belts and Hose for a 2012 Mack MRU?

The average price for Belts and Hoses for the 2012 Mack MRU is $132.92. 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 MRU model years?

Yes, we currently carry Belts and Hoses for 11 model years of Mack MRUs between 2008 and 2019. Belts and Hoses are bought most frequently for the following model years: 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2011, and 2010.

What are the cheapest Belts and Hoses for my 2012 Mack MRU?

The cheapest 2012 Mack MRU Belts and Hoses we carry in stock are:

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 2.50" Diameter (20590003) – $22.99
Poly Rib Belt HD Serpentine Belt; 90 Long, 8 Rib Count, Heavy Duty (19270599) – $30.49
Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 31.26mm Width, 8 Grooves (20130041) – $55.99
Idler/Tensioner Pulley: Direct Fit, Steel, 86mm Diameter (10457773) – $57.99
V-Ribbed (Heavy Duty) Serpentine Belt: 90.873" Long, 8 Rib Count, Exact Fit (10914432) – $60.99

What are the top-rated Belts and Hoses that fit the 2012 Mack MRU?

Out of 1 reviews by customers, our 2012 Mack MRU Belts and Hoses have an average customer rating of . These are some of the highest-rated Belts and Hose types for the 2012 Mack MRU and their top-rated products:

Belt Tensioners
- Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (10219521) – $139.99

What types of Belts and Hoses do you sell for my 2012 Mack MRU?

As of 2/5/25, these are some of the most in-demand types of Belts and Hoses for a 2012 Mack MRU:

Can I get help with 2012 Mack MRU 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 MRU Belts and Hoses?

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

2012 Mack MRU Belts and Hoses

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 2.50" Diameter (Part No.C71813)

Litens – Idler/Tensioner Pulley: Direct Fit, Steel, 86mm Diameter (Part No.900117A)

Litens – Idler Pulley: Direct Fit, Steel, 80mm Diameter, w/ Hardware (Part No.900702A)

Litens – Idler Pulley: Direct Fit, Steel, 74mm Diameter (Part No.900696A)

Gates – DriveAlign½ Belt Drive Idler/Tensioner Pulley (Part No.36285)

Litens – Idler Pulley: Direct Fit, Steel, 74mm Diameter (Part No.900650A)

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 38.3mm Width, Smooth (Part No.89111)

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 86.5mm Dia., 39.4mm Width, Smooth (Part No.89106)

Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38607)

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89458)

Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38671)

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910566A)

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910572A)

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910582A)

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 31.26mm Width, 8 Grooves (Part No.89103)

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Direct Fit, 73.95 mm Diameter, 10 Grooves (Part No.89117)

Gates – DRIVEALIGN PULLEY (Part No.36096)

Gates – V-Ribbed (Heavy Duty) Serpentine Belt: 71.499" Long, 8 Rib Count, Exact Fit (Part No.K080710HD)

Gates – Micro-V« Serpentine Drive Belt (Part No.K080615)

Dayco – Poly Rib Belt HD Serpentine Belt; 63 Long, 8 Rib Count, Heavy Duty (Part No.5080630)

Gates – FleetRunner« Heavy-Duty Micro-V« Serpentine Drive Belt (Part No.K080893HD)

Gates – V-Ribbed Serpentine Belt: 68.05" Long, 10 Rib Count, Exact Fit (Part No.K100675)

Gates – V-Ribbed Serpentine Belt: 67.55" Long, 10 Rib Count, Exact Fit (Part No.K100670)

Gates – V-Ribbed Serpentine Belt: 89.849" Long, 8 Rib Count, Exact Fit (Part No.K080893)

Gates – FleetRunner« Heavy-Duty Micro-V« Serpentine Drive Belt (Part No.K080944HD)

Gates – FleetRunner« Heavy-Duty Micro-V« Serpentine Drive Belt (Part No.K080623HD)

Gates – V-Ribbed (Heavy Duty) Serpentine Belt: 79" Long, 12 Rib Count, Exact Fit (Part No.K120784HD)

Gates – V-Ribbed (Heavy Duty) Serpentine Belt: 67.63" Long, 12 Rib Count, Exact Fit (Part No.K120671HD)

Dayco – Poly Rib Belt HD Serpentine Belt; 90 Long, 8 Rib Count, Heavy Duty (Part No.5080900)

Gates – FleetRunner« Heavy-Duty Micro-V« Serpentine Drive Belt (Part No.K080585HD)

Dayco – Poly Rib Belt HD Serpentine Belt; 62.21 Long, 8 Rib Count, Heavy Duty (Part No.5080622)

Dayco – Poly Rib Belt HD Serpentine Belt; 63 Long, 8 Rib Count, Heavy Duty (Part No.5080630)

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 38.3mm Width, Smooth (Part No.89111)

Gates – V-Ribbed (Heavy Duty) Serpentine Belt: 63.625" Long, 8 Rib Count, Exact Fit (Part No.K080630HD)

Gates – Dual-Sided V-Ribbed Belts Serpentine Belt: 68.375" Long, 10 Rib Count, Exact Fit (Part No.DK100672)

Gates – FleetRunner« Heavy-Duty Micro-V« Serpentine Drive Belt (Part No.K080623HD)

Gates – Micro-V« Serpentine Drive Belt (Part No.K080630)

Gates – V-Ribbed (Heavy Duty) Serpentine Belt: 90.873" Long, 8 Rib Count, Exact Fit (Part No.K080903HD)

Gates – V-Ribbed Serpentine Belt: 59.024" Long, 8 Rib Count, Exact Fit (Part No.K080585)

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 2.50" Diameter (Part No.C71813)

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 31.26mm Width, 8 Grooves (Part No.89103)

Litens – Idler Pulley: Direct Fit, Steel, 74mm Diameter (Part No.900696A)

Gates – DRIVEALIGN PULLEY (Part No.36096)

Litens – Idler/Tensioner Pulley: Direct Fit, Steel, 86mm Diameter (Part No.900117A)

Litens – Idler Pulley: Direct Fit, Steel, 80mm Diameter, w/ Hardware (Part No.900702A)

Gates – DriveAlign½ Belt Drive Idler/Tensioner Pulley (Part No.36285)

Litens – Idler Pulley: Direct Fit, Steel, 74mm Diameter (Part No.900650A)

Litens – Idler Pulley: Direct Fit, Steel, 74mm Diameter (Part No.900486A)

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Direct Fit, 73.95 mm Diameter, 10 Grooves (Part No.89117)

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89477)

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910572A)

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910582A)

Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38671)

Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38607)

Gates – FleetRunner½ Heavy-Duty Automatic Belt Drive Tensioner (Part No.38633)

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910566A)

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89458)

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910567A)

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

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

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89471)