from

$79.99

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

from

$324.99

Dayco believes in a systems approach to maintenance and has a full line of serpentine belt kits that have been designed for the most popular applications, ensuring that whomever is completing the repair has all the parts needed. Dayco’s kit offers everything to service your front-end accessory drive with OE or equivalent components. This can include a premium tensioner with flat spring technology, durable pulley(s) with permanently lubricated bearings, a Dayco ela (stretch) serpentine belt, and the Dayco serpentine belt that provides extensive flexibility and longer service life, while handling higher workloads & temperatures.

Product Features:

Engineered to match OE specifications with unique features that enhance vehicle performance and safety.
For vehicles that need a highly engineered drive belt and multiple parts for a thorough and proper repair
For vehicles that need a highly engineered drive belt and multiple parts for a thorough and proper repair

from

$102.99

Gates Fleet Runner Micro-V Belts are designed for the toughest applications. Fleet Runner 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. Fleet Runner does this all while providing the lowest cost per mile for fleets, including 3/4 and 1 ton pickups.

Product Features:

The patented material offers optimal performance at prolonged extreme operating temperatures.
Heavy-duty construction resists cracking and wear, even at extreme temperatures
A special compound offers unparalleled flexibility, stability, load capacity, and belt lifespan.
A problem-solving tool designed for the most challenging applications
It consistently outperforms other heavy-duty serpentine belts on the market
Designed to save your fleet money and reduce downtime
Replacing the tensioner is recommended (if the vehicle is equipped with one).

from

$105.99

Gates Fleet Runner Micro-V Belts are designed for the toughest applications. Fleet Runner 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. Fleet Runner does this all while providing the lowest cost per mile for fleets, including 3/4 and 1 ton pickups.

Product Features:

The patented material offers optimal performance at prolonged extreme operating temperatures.
The construction resists cracking and wear, even at extreme temperatures.
Special compound provides unmatched flexibility, stability, load carrying capacity and belt life
Troubleshooting designed for the most challenging applications
Consistently outperforms other heavy-duty serpentine belts on the market
Designed to save your fleet money and reduce downtime
Replacing the tensioner is recommended (if the vehicle is equipped with one).

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

$57.99

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

Product Features:

The special construction of the belt 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 original equipment manufacturer specifications
Replacing the tensioner is recommended (if the vehicle is equipped with one).

from

$56.99

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

$95.99

Gates Fleet Runner Micro-V Belts are designed for the toughest applications. Fleet Runner 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. Fleet Runner 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
Designed to save your fleet money and reduce downtime
Tensioner Replacement is Recommended (if equipped)

from

$102.99

Gates Fleet Runner Micro-V Belts are designed for the toughest applications. Fleet Runner 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. Fleet Runner 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
The 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
Designed to save your fleet money and reduce downtime
It is recommended to replace the tensioner (if equipped).

from

$56.99

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

Product Features:

The special belt construction eliminates noise, reduces tension loss, and solves transmission problems.
EPDM rubber constructions resist cracking on the surface of the ribs.
Meets or exceeds all specifications from the Original Equipment Manufacturer
Replacing the tensioner is recommended (if the vehicle is equipped with one).

from

$103.99

The Dayco HD double sided poly-V belt HD is the perfect solution for heavy-duty applications requiring the transmission of power from both sides of the belt. It features an EPDM rubber compound construction, plus aramid fiber cords to provide longer service life and reduced noise issues. Each belt is engineered with specially treated cords that help provide length and tension stability for long lasting durability and its solid rib design allows for additional belt strength and pulling power.

Product Features:

Withstands high under-hood temperatures and ozone contamination
Lessens pulley misalignment noise
Helps provide length and tension stability
Made in the USA

from

$57.99

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 surface of the ribs.
Meets or exceeds all original equipment manufacturer specifications
Replacing the tensioner is recommended (if the vehicle is equipped with one).
Unique form grinding of each individual belt assures precise dimensional control.
Meets or exceeds SAE J1459, SAE J2432, and SAE J1596 specifications.

from

$78.99

Gates Fleet Runner Micro-V Belts are designed for the toughest applications. Fleet Runner 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. Fleet Runner does this all while providing the lowest cost per mile for fleets, including 3/4 and 1 ton pickups.

Product Features:

The patented material offers optimal performance at prolonged extreme operating temperatures.
The construction resists cracking and wear, even at extreme temperatures.
Special compound provides unmatched flexibility, stability, load carrying capacity and belt life
A problem-solving tool designed for the most challenging applications
Consistently outperforms other heavy-duty serpentine belts on the market
Engineered to save your fleet money and reduce downtime
It is recommended to replace the tensioner (if equipped).

from

$66.99

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 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

$103.99

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:

Micro V-shaped ribs on both sides of the strap
Specially designed to resist wear and cracking due to overall reduced thickness in construction
Custom configuration for Gates’ specialized solution kits for serpentine transmissions that cause OEM problems.
Extensive application-specific coverage
Replacing the tensioner is recommended (if equipped).

from

$79.99

Gates Fleet Runner Micro-V Belts are designed for the toughest applications. Fleet Runner 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. Fleet Runner 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
Construction resistant to cracking and wear, even at extreme temperatures
A special compound offers unparalleled flexibility, stability, load capacity, and belt lifespan.
Troubleshooting designed for the most challenging applications
Consistently outperforms other heavy-duty serpentine belts on the market
Designed to save your fleet money and reduce downtime
Replacing the tensioner is recommended (if the vehicle is equipped with one).

from

$60.99

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

$93.99

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

$54.99

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

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 original equipment manufacturer specifications
Tensioner Replacement is Recommended (if equipped)

from

$96.99

Gates Fleet Runner Micro-V Belts are designed for the toughest applications. Fleet Runner 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. Fleet Runner does this all while providing the lowest cost per mile for fleets, including 3/4 and 1 ton pickups.

Product Features:

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

from

$102.99

Gates Fleet Runner Micro-V Belts are designed for the toughest applications. Fleet Runner 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. Fleet Runner does this all while providing the lowest cost per mile for fleets, including 3/4 and 1 ton pickups.

Product Features:

The patented material provides maximum performance at extreme and prolonged operating temperatures.
Heavy-duty construction resists cracking and wear, even at extreme temperatures
The special compound provides unprecedented flexibility, stability, load-carrying capacity, and belt life.
A problem-solving tool designed for the most challenging applications
It consistently outperforms other heavy-duty serpentine belts on the market
Designed to save your fleet money and reduce downtime
Replacing the tensioner is recommended (if the vehicle is equipped with one).

from

$69.99

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

$105.99

Gates Fleet Runner Micro-V Belts are designed for the toughest applications. Fleet Runner 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. Fleet Runner does this all while providing the lowest cost per mile for fleets, including 3/4 and 1 ton pickups.

Product Features:

The patented material provides maximum performance at extreme and prolonged 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
Troubleshooting designed for the most challenging applications
It consistently outperforms other heavy-duty serpentine belts on the market
Designed to save your fleet money and reduce downtime
Replacing the tensioner is recommended (if the vehicle is equipped with one).

from

$68.99

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

$96.99

Gates Fleet Runner Micro-V Belts are designed for the toughest applications. Fleet Runner 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. Fleet Runner does this all while providing the lowest cost per mile for fleets, including 3/4 and 1 ton pickups.

Product Features:

The patented material provides maximum performance at extreme and prolonged operating temperatures.
Heavy-duty construction resists cracking and wear, even at extreme temperatures
The special compound provides unprecedented flexibility, stability, load-carrying capacity, and belt life.
Troubleshooting designed for the most challenging applications
Consistently outperforms other heavy-duty serpentine belts on the market
Designed to save your fleet money and reduce downtime
It is recommended to replace the tensioner (if equipped).

Mack GU7 Serpentine and V Belts

Your One-Stop Shop For Trusted Mack GU7 Serpentine and V Belts

Essential Mack GU7 Serpentine and V Belts

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

Dayco – Serpentine Belt Kit With Belt, Tensioner, 2-Piece Set (Part No.5080630HDK1)

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K080615HD)

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K100739HD)

Dayco – Poly Rib Belt, Premium, Dayco (Part No.5080630)

Gates – Micro-V Serpentine Drive Belt (Part No.K080590)

Dayco – Poly Rib Belt HD Serpentine Belt; 58.5 Long, 8 Rib Count, Heavy Duty (Part No.5080585)

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K080630HD)

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K120786HD)

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

Dayco – Double Sided Poly Rib Belt HD Serpentine Belt; 74.13 Long, 10 Rib Count (Part No.6100741)

Gates – Micro-V Serpentine Drive Belt (Part No.K080585)

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K100764HD)

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

Gates – Micro-V Dual-Sided Serpentine Drive Belt (Part No.DK100672)

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K100745HD)

Dayco – Poly Rib Belt HD Serpentine Belt; 59.06 Long, 8 Rib Count, Heavy Duty (Part No.5080590)

Dayco – Poly Rib Belt HD Serpentine Belt; 74 Long, 10 Rib Count, Heavy Duty (Part No.5100740)

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

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K120784HD)

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K080590HD)

Dayco – Poly Rib Belt, Premium, Dayco (Part No.5120788)

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

Dayco – Poly Rib Belt, Premium, Dayco (Part No.5120783)

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

Mack GU7 Serpentine and V Belts List

Serpentine and V Belts Brands You Can Trust For Your Mack GU7

Most Purchased Mack GU7 Serpentine and V Belts from Dayco

FAQs for Mack GU7 Serpentine and V Belts

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