Mack DM Belts and Hoses

Essential Mack DM Belts and Hoses

Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89449)

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

from

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

Product Features:
  • Designed to prevent fluctuations to the tensioner body for longer service life
  • Reduces the risk of noise and helps avoid housing separation
  • Includes pulleys with lubricated bearings for longer lasting performance
  • Heavy-duty cast aluminum body and pulley arms translate into extra strength and durability
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Litens – Serpentine Belt Tensioner: 1 Piece (Part No.910008A)

Serpentine Belt Tensioner: 1 Piece

from

$122.99
This Heavy Duty Truck and Bus tensioner is designed, engineered and manufactured by Litens – the world’s largest supplier of original equipment (O.E.) belt tensioners in the world. The Litens replacement part meets all form, fit, and performance characteristics of the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). This part is manufactured to meet or exceed the performance and life specifications of the O.E. part. The part features a premium chrome-silicon steel spring, internal damping, a “lift-lug” feature for ease of installation, Tandem 6303 ball bearings, a molded locator pin for precise installation, and a forged steel pulley. Specifically designed for a wide variety of Mack Trucks and Buses with E6/E7 (12.0L) engines. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
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Dayco – Flex Radiator Hoses; Neoprene, Heavy Duty, 24 Inch Long, 2 Inch Inner Diameter (Part No.82111GL)

Flex Radiator Hoses; Neoprene, Heavy Duty, 24 Inch Long, 2 Inch Inner Diameter

from

$58.99
The Dayco flex radiator hose replaces straight or molded radiator hoses on a wide range of engine applications. Precision molded in standard lengths, it features a knitted reinforcement and synthetic EPDM construction. This hose is designed to prevent splitting, ballooning and elongation as well as resist ozone and other detrimental environmental elements, coolants and temperature variations of -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). With corrugations that provide excellent hose flexibility without flattening or collapsing, the Dayco flex radiator hose also features a helical steel coil spring for increased flexibility.

Product Features:
  • Designed to meet OE specifications
  • Not suitable for oil or heat transfer
  • Meets SAE J20R4, Class D-2 requirements for improved service hoses
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Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter (Part No.E70739)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter

from

$20.99
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
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Gates – V-Ribbed (Heavy Duty) Serpentine Belt: 66" Long, 10 Rib Count, Exact Fit (Part No.K100655HD)

V-Ribbed (Heavy Duty) Serpentine Belt: 66" Long, 10 Rib Count, Exact Fit

from

$71.99
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)
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Dayco – Poly Rib Belt HD Serpentine Belt; 65.55 Long, 10 Rib Count, Heavy Duty (Part No.5100655)

Poly Rib Belt HD Serpentine Belt; 65.55 Long, 10 Rib Count, Heavy Duty

from

$48.49
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
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Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 46.27mm Width, Smooth (Part No.89102)

Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 46.27mm Width, Smooth

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 ha

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
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Gates – Straight Silicone Coolant Hose (Part No.24840)

Straight Silicone Coolant Hose

from

$4.99
Extra long-lasting hose constructed with silicone rubber. Ideal for extremely high temperature service in radiator, heater and other coolant transfer hose applications. Excellent for extreme ambient and radiant temperature conditions.

Product Features:
  • Distinct blue cover
  • Resists weathering, ozone, heat and coolant deterioration
  • Exceeds SAE 20R1 (Class A Standard Wall)
  • Temperature Range: -70 Deg. F to +350 Deg. F (-56 Deg. C to +177 Deg. C)
  • Note: For a maintenance free connection, use PowerGrip SB clamps
  • Caution: Do not use for fuel or oil transfer applications
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Gates – Premium Molded Coolant Hose (Part No.21379)

Premium Molded Coolant Hose

from

$27.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.

Product Features:
  • Specifically-engineered materials resist collapse under vacuum
  • Engineered to resist electrochemical degradation, the leading cause of hose failure
  • Pre-shaped to fit and to ensure perfectly sealed conditions
  • EPDM tube: synthetic fiber knit reinforcement: heat-, ozone- and chemical coolant-resistant EPDM cover
  • Meets requirements of SAE 20R4, class D2 and DIN 73411, class A (except for tolerances)
  • Temperature Range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
  • Note: Gates recommends replacing hose clamps each time a new coolant hose is installed
  • Caution: Do not use for fuel or oil transfer applications
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Gates – Premium Molded Coolant Hose (Part No.21892)

Premium Molded Coolant Hose

from

$74.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.

Product Features:
  • Specifically-engineered materials resist collapse under vacuum
  • Engineered to resist electrochemical degradation, the leading cause of hose failure
  • Pre-shaped to fit and to ensure perfectly sealed conditions
  • EPDM tube: synthetic fiber knit reinforcement: heat-, ozone- and chemical coolant-resistant EPDM cover
  • Meets requirements of SAE 20R4, class D2 and DIN 73411, class A (except for tolerances)
  • Temperature Range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
  • Note: Gates recommends replacing hose clamps each time a new coolant hose is installed
  • Caution: Do not use for fuel or oil transfer applications
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Dayco – Flex Radiator Hoses; Neoprene, Heavy Duty, 16.81 Inch Long, 2 Inch Inner Dia. (Part No.82091GL)

Flex Radiator Hoses; Neoprene, Heavy Duty, 16.81 Inch Long, 2 Inch Inner Dia.

from

$27.49
The Dayco flex radiator hose replaces straight or molded radiator hoses on a wide range of engine applications. Precision molded in standard lengths, it features a knitted reinforcement and synthetic EPDM construction. This hose is designed to prevent splitting, ballooning and elongation as well as resist ozone and other detrimental environmental elements, coolants and temperature variations of -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). With corrugations that provide excellent hose flexibility without flattening or collapsing, the Dayco flex radiator hose also features a helical steel coil spring for increased flexibility.

Product Features:
  • Designed to meet OE specifications
  • Not suitable for oil or heat transfer
  • Meets SAE J20R4, Class D-2 requirements for improved service hoses
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Litens – O.E Quality Idler/Tensioner Pulley: Direct Fit, Steel, 74 mm Diameter (Part No.900121A)

O.E Quality Idler/Tensioner Pulley: Direct Fit, Steel, 74 mm Diameter

from

$54.99
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.
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Gates – Green Stripe« 2-Ply Straight Coolant Hose (Part No.24232)

Green Stripe« 2-Ply Straight Coolant Hose

from

$2.99
Stick hose designed for demanding heavy-duty coolant/air applications. Approved for marine applications.

Product Features:
  • Cover marked in 1 in. increments to facilitate approximate cut lengths, allows ┐custom-fit” installations
  • Engineered 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 transfer applications
  • PLEASE NOTE: Item is priced and sold by the inch. See store for details.
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Gates – FleetRunner« Heavy-Duty V-Belt (Part No.9435HD)

FleetRunner« Heavy-Duty V-Belt

from

$32.99
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
  • Special compound provides unmatched stability, load carrying capacity and belt life
  • Unique undercord notch pattern offers increased 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
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Gates – FleetRunner« Heavy-Duty V-Belt (Part No.9640HD)

FleetRunner« Heavy-Duty V-Belt

from

$46.99
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
  • Special compound provides unmatched stability, load carrying capacity and belt life
  • Unique undercord notch pattern offers increased 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
See More

Dayco – Bottom Cog V-Belt; 43.5 Inch Long, Exact Fit Premium Quality (Part No.17435)

Bottom Cog V-Belt; 43.5 Inch Long, Exact Fit Premium Quality

from

$21.29
Dayco’s high performance HD V-belt is one of the most innovative, top performing belts for its application. By combining raw-edge construction with a specially formulated polyester cord treatment, it offers excellent resistance to repeated flexing and protection against heat, oil and grease as well as the strength, stability and reliability required for vehicles that still need a heavy-duty V-belt.

Product Features:
  •  Designed for efficient power transmission to vehicle accessories in today’s trucks and buses
  •  Provides greater durability and flexibility – 35% stronger than all previous versions
  •  Features specially treated cords for added strength, stability and reliability
  • 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
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Gates – Automotive XL« High Capacity V-Belt (Part No.9500)

Automotive XL« High Capacity V-Belt

from

$29.49
Replacement belt for the most demanding engine drives. Due to thermal forces, this variable notched belt actually tightens on the drive as it gets hot. This results in improved belt performance by reducing tension decay and noise.

Product Features:
  • Fiber-loaded rubber stock adds flexibility along the length of the belt and provides greater lateral stability in the pulley
  • Form-ground to ensure precise top width and sidewall dimensional control for proper fit to the pulley
  • Thermally-active tensile cords for maintenance-free performance when properly installed and tensioned
  • Resists oil, heat, ozone, weather and aging for improved belt life
  • Meets or exceeds SAE J636C specifications
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Dayco – Bottom Cog V-Belt; 67 Inch Long, Exact Fit Premium Quality (Part No.17670)

Bottom Cog V-Belt; 67 Inch Long, Exact Fit Premium Quality

from

$25.49
Dayco’s high performance HD V-belt is one of the most innovative, top performing belts for its application. By combining raw-edge construction with a specially formulated polyester cord treatment, it offers excellent resistance to repeated flexing and protection against heat, oil and grease as well as the strength, stability and reliability required for vehicles that still need a heavy-duty V-belt.

Product Features:
  •  Designed for efficient power transmission to vehicle accessories in today’s trucks and buses
  •  Provides greater durability and flexibility – 35% stronger than all previous versions
  •  Features specially treated cords for added strength, stability and reliability
  • 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
See More

Dayco – Bottom Cog V-Belt; 64 Inch Long, Exact Fit Premium Quality (Part No.17640)

Bottom Cog V-Belt; 64 Inch Long, Exact Fit Premium Quality

from

$23.99
Dayco’s high performance HD V-belt is one of the most innovative, top performing belts for its application. By combining raw-edge construction with a specially formulated polyester cord treatment, it offers excellent resistance to repeated flexing and protection against heat, oil and grease as well as the strength, stability and reliability required for vehicles that still need a heavy-duty V-belt.

Product Features:
  •  Designed for efficient power transmission to vehicle accessories in today’s trucks and buses
  •  Provides greater durability and flexibility – 35% stronger than all previous versions
  •  Features specially treated cords for added strength, stability and reliability
  • 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
See More

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

Green Stripe« 2-Ply Straight Coolant Hose

from

$1.49
Stick hose designed for demanding heavy-duty coolant/air applications. Approved for marine applications.

Product Features:
  • Cover marked in 1 in. increments to facilitate approximate cut lengths, allows ┐custom-fit” installations
  • Engineered 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 transfer applications
  • PLEASE NOTE: Item is priced and sold by the inch. See store for details.
See More

Helping You Find the Right Belts and Hoses for Your Mack DM

You love your DM. So we’ve made it easier than ever to help you find Mack DM Belts and Hoses in our online catalog. Our inventory holds 42 aftermarket and OEM Belts and Hoses for your Mack DM, ranging from $1.49 to $143.99.

We offer parts from 4 brands trusted to make quality Belts and Hoses for your Mack DM.

Find your DM Belts and Hoses here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your Mack DM part to confirm it’s just right? You can find your nearest Advance Auto Parts store and confirm they have the part in stock before heading over.

Top Belts and Hoses Brands for Your Mack DM

Our inventory holds Belts and Hoses for your Mack DM from 4 trusted brands. You’ll find OEM and aftermarket parts from brands like Dayco, Gates, and Litens, all of which can keep that Mack happy.

FAQs for Mack DM Belts and Hoses

What are the most purchased Belts and Hoses for the Mack DM?

Out of 42 Belts and Hoses for the Mack DM, the most popular in our inventory are:
Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter
from $20.99
This product is not rated
Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter
Upper Radiator Hoses
Bottom Cog V-Belt; 43.5 Inch Long, Exact Fit Premium Quality
from $21.29
This product is not rated
Bottom Cog V-Belt; 43.5 Inch Long, Exact Fit Premium Quality
V-Belts
Bottom Cog V-Belt; 43 Inch Long, Exact Fit Premium Quality
from $21.29
This product is not rated
Bottom Cog V-Belt; 43 Inch Long, Exact Fit Premium Quality
V-Belts