2021 Freightliner B2 Belts and Hoses
Find Your Specific 2021 Freightliner B2 Belts and Hoses
Below you will find various in-demand Freightliner Belts and Hoses, components and accessories for your 2021 B2. Advance Auto Parts has popular B2 parts like Engine Cooling Hoses, Serpentine and V Belts, Radiator Hoses and more. You’ll also find aftermarket and OEM Belts and Hoses for other B2 model years including
2010,
2011,
2012,
2013,
2014,
2015,
2016,
2017,
2018 and more. Select a category of 2021 Freightliner B2 Belts and Hoses below and start saving instantly.
Popular 2021 Freightliner B2 Belts and Hoses Categories
Essential Belts and Hoses for 2021 Freightliner B2s
Gates – Automotive XL High Capacity V-Belt (Part No.9447)
from
$32.49
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:
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Product Features:
- Fiber-loaded rubber mount adds flexibility along the belt and provides greater lateral stability on the pulley
- Ground to ensure precise dimensional control of the top width and sidewall for proper adjustment to the pulley.
- Thermally-active tensile cords for maintenance-free performance when properly installed and tensioned
- Resistant to oil, heat, ozone, weathering, and aging for better belt life.
- Meets or exceeds SAE J636C specifications
Dayco – Bottom Cog V-Belt; 43.5 Inch Long, Exact Fit Premium Quality (Part No.17435)
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:
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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
Dayco – Poly Rib Belt HD Serpentine Belt; 80.51 Long, 8 Rib Count, Heavy Duty (Part No.5080805)
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:
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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
Gates – FleetRunner Heavy-Duty V-Belt (Part No.9435HD)
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:
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Product Features:
- Patented material provides peak performance at extremely prolonged operating temperatures
- Crack, wear, oil, and heat resistant construction
- The special compound provides unprecedented flexibility, stability, load-bearing capacity and belt life.
- Unique notch pattern offers greater flexibility for smaller diameter pulleys
- Problem solver for failed disks
- Engineered to save your fleet money and reduce downtime
- Meets RMA standards for oil and heat resistance and static conductivity requirements
Gates – Automotive XL High Capacity V-Belt (Part No.9451)
from
$24.29
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:
See More
Product Features:
- The fiber-filled rubber adds flexibility along the entire 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 pull cords for maintenance-free operation when the strap is properly installed and tensioned
- Resists oil, heat, ozone, weather, and decay to improve belt life
- Meets or exceeds SAE J636C specifications
Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89475)
from
$91.99
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:
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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
Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910552A)
from
$124.99
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:
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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.
Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910538A)
from
$187.99
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:
See More
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.
Gates – FleetRunner Heavy-Duty Automatic Belt Drive Tensioner (Part No.38702)
from
$166.99
Product Features:
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- Optimized components engineered for maximum strength and durability
- Patented design provides superior belt alignment and tension for improved drive efficiency and life
- The patented labyrinth seal prevents contamination of internal parts for maximum durability and life.
- Long-life steel pulleys with dust cover to protect internal bearings from contamination
- Double-row bearings carry more load and last up to 3 times longer than two individual bearings
- Round chrome-silicone torsion spring for less fatigue than coil spring designs.
- Patented damping mechanism provides maximum stability, reducing vibration and increasing the life of the belt, tensioner and other accessory drive components
Gates – FleetRunner Heavy-Duty Automatic Belt Drive Tensioner (Part No.38631)
from
$126.99
Gates is a global leader in Original Equipment (OE) System Design. With a full line of tensioners globally, you can count on Gates to supply premium quality DriveAlign Automatic Belt Tensioners you can depend on.
Product Features:
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Product Features:
- Optimized components engineered for maximum strength and durability
- Patented design ensures superior belt alignment and tension, improving transmission cost-effectiveness and service life
- The patented labyrinth seal prevents contamination of internal parts for maximum durability and life.
- Long-life steel pulleys with dust cover to protect internal bearings from contamination
- Double row bearings carry more load and last up to 3X longer than two individual bearings
- Round chrome-silicone torsion spring for less fatigue than coil spring designs.
- The patented damping mechanism ensures maximum stability, reduces vibration and extends the life of the belt, idler and other auxiliary transmission components
Gates – Micro-V Serpentine Drive Belt (Part No.K080806)
from
$49.99
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:
See More
Product Features:
- The special belt construction eliminates noise, reduces tension loss and solves transmission problems.
- EPDM rubber constructions resist cracking on the rib surface
- Meets or exceeds all OEM specifications
- It is recommended to replace the tensioner (if equipped)
- Unique form grinding of each individual belt assures precise dimensional control.
- Meets or exceeds SAE J1459, SAE J2432, and SAE J1596 specifications.
Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K080790HD)
from
$79.99
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:
See More
Product Features:
- Patented material provides peak performance at prolonged extreme operating temperatures
- Construction resists cracking and wear, even at extreme temperatures
- Special compound provides unmatched flexibility, stability, load carrying capacity and belt life
- A problem-solving tool designed for the toughest applications
- Consistently outperforms other heavy-duty serpentine belts on the market
- Engineered to save your fleet money and reduce downtime
- Replacement of the tensioner is recommended (if equipped)
Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K080680HD)
from
$97.99
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:
See More
Product Features:
- Patented material provides peak performance at prolonged extreme 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.
- 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
- Replacement of the tensioner is recommended (if equipped)
Carquest Standard – Serpentine Belt: 80.5" Long, 8 Rib Count (Part No.805K8)
from
$24.29
Carquest Standard serpentine belts are constructed from quality materials to ensure durability and a long lifespan. We design and manufacture each Carquest Standard belt to enhance belt-to-pulley contact, maximizing load-carrying capacity and extending belt life. Our serpentine belts are built with EPDM rubber and treated polyester cord to improve durability and belt life. Carquest Standard belts are the right choice when looking for OE fit, form, and function at a great price.
Product Features:
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Product Features:
- Constructed with heat and ozone resistant EPDM rubber
- Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
- Made with treated polyester cord to reduce belt stretch
- Meets OE fit, form, and function
Gates – Micro-V« Serpentine Drive Belt (Part No.K080605)
from
$60.99
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:
See More
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.
Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K080962HD)
from
$107.99
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:
See More
Product Features:
- Patented material provides peak performance at prolonged extreme 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.
- 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
- Replacement of the tensioner is recommended (if equipped)
Dayco – Poly Rib Belt HD Serpentine Belt; 76.11 Long, 8 Rib Count, Heavy Duty (Part No.5080760)
from
$50.99
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:
See More
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
Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K080806HD)
from
$72.99
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:
See More
Product Features:
- The patented material provides optimal performance at prolonged extreme operating temperatures.
- 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 toughest applications
- Consistently outperforms other heavy-duty serpentine belts on the market
- Designed to save your fleet’s money and reduce downtime
- Replacement of the tensioner is recommended (if equipped)
Gates – Micro-V Serpentine Drive Belt (Part No.K080680)
from
$74.99
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:
See More
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 specifications from the Original Equipment Manufacturer
- It is recommended to replace the tensioner (if equipped)
- Unique form grinding of each individual belt assures precise dimensional control.
- Meets or exceeds SAE J1459, SAE J2432, and SAE J1596 specifications.
Gates – Molded Coolant Hose (Part No.20206)
from
$29.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.
Product Features:
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Product Features:
- Materials specially designed to resist collapse in a vacuum
- Designed to withstand electrochemical degradation, the leading cause of hose failure
- Pre-shaped to fit and to ensure perfectly sealed conditions
- EPDM Tube; synthetic fiber knit reinforcement; EPDM cover resistant to heat, ozone and chemical refrigerants
- Meets requirements of SAE 20R4, class D2 and DIN 73411, class A (except for tolerances)
- Temperature range -40 degrees F to +257 degrees F (-40 degrees C to +125 degrees C)
- Note: Gates recommends replacing hose clamps each time a new coolant hose is installed
- Caution: Do not use for fuel or oil transportation applications.
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13.75" Long, 2" Diameter (Part No.E70739)
from
$42.99
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:
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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
Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 23" Long, 2" Diameter (Part No.E72324)
from
$75.99
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:
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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
Dayco – Straight Coolant Hose, Heavy-Duty 2-Ply, 2" (sold by inch) (Part No.77200GL)
from
$1.99
Designed for a wide range of light and heavy duty truck applications where the radiator hose routing is relatively straight, Dayco Heavy Duty Straight Radiator Hose is made with the highest quality woven mesh fabric reinforcement, neoprene cover, and nitrile tube compounds to withstand the most corrosive elements in diesel engines: oil, coolants, coolant additives, and temperature ranges of -40 Degree F (-40 Degree C) to +212 Degree F (+100 Degree C). This hose meets SAE requirements J20R1, Class B Tube, Class C Cover, standard wall construction. Note: This hose is NOT suitable for fuel or oil transfer.
Product Features:
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Product Features:
- Meets SAE requirements J20R1, Class B Tube, Class C Cover, standard wall construction
- Made with the highest quality woven mesh fabric reinforcement, neoprene cover, and nitrile tube compounds
- Withstands the most corrosive elements in diesel engines: oil, coolants, and coolant additives
- Performs well in temperature ranges of -40 Degree F (-40 Degree C) to +212 Degree F (+100 Degree C)
- PLEASE NOTE: Priced and sold by inch. See store for details.
Upgrade your 2021 Freightliner B2 with Top-Quality Belts and Hoses
When it comes to maintaining or upgrading your 2021 Freightliner B2, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Freightliner or enhancing its overall performance, Belts and Hoses are key to keeping your B2 functioning at its best. At Advance Auto Parts, we offer a wide selection of 11 Belts and Hoses for the 2021 Freightliner B2, designed to meet your needs without breaking the bank.
From
Engine Cooling Hose
replacements to
Serpentine and V Belts
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 2021 Freightliner B2 at great prices.
Our Belts and Hoses inventory for this model
ranges from just $4.79 to $229.99, with
an average price of $68.98.
Our 11 Belts and Hoses in stock come from 2 trusted brands, so you’re sure to find the right part for your 2021 Freightliner B2 without overspending.
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 2021 Freightliner B2 is always ready to roll. We’re committed to providing you with everything you need to keep your B2 in top shape, all in one place.
Start shopping confidently below for your 2021 Freightliner B2!
Best-Selling Engine Cooling Hoses for 2021 Freightliner B2s
Enhance the driving experience in your Freightliner with 1 quality Engine Cooling Hose components, starting at $29.99.
Gates – Molded Coolant Hose (Part No.20206)
from
$29.99
Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications.
Product Features:
See More
Product Features:
- Materials specially designed to resist collapse in a vacuum
- Designed to withstand electrochemical degradation, the leading cause of hose failure
- Pre-shaped to fit and to ensure perfectly sealed conditions
- EPDM Tube; synthetic fiber knit reinforcement; EPDM cover resistant to heat, ozone and chemical refrigerants
- Meets requirements of SAE 20R4, class D2 and DIN 73411, class A (except for tolerances)
- Temperature range -40 degrees F to +257 degrees F (-40 degrees C to +125 degrees C)
- Note: Gates recommends replacing hose clamps each time a new coolant hose is installed
- Caution: Do not use for fuel or oil transportation applications.
Most Popular 2021 Freightliner B2 Serpentine and V Belts
Customize your Freightliner with 7 Serpentine and V Belts products
like Serpentine Belts and
V-Belts, all
priced under $118.99.
Dayco – Bottom Cog V-Belt; 43.5 Inch Long, Exact Fit Premium Quality (Part No.17435)
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:
See More
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
Dayco – Poly Rib Belt HD Serpentine Belt; 71.06 Long, 8 Rib Count, Heavy Duty (Part No.5080710)
from
$62.99
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:
See More
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
Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K080964HD)
from
$118.99
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:
See More
Product Features:
- The patented material provides optimal performance at prolonged extreme operating temperatures.
- 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 toughest 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)
Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K080708HD)
from
$109.99
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:
See More
Product Features:
- Patented material provides peak performance at prolonged extreme operating temperatures
- Crack and wear resistant construction, even in extreme temperatures
- The special compound provides unprecedented flexibility, stability, load-carrying capacity and belt life.
- Troubleshooting designed for the toughest applications
- Consistently outperforms other heavy-duty serpentine belts on the market
- Engineered to save your fleet money and reduce downtime
- Replacement of the tensioner is recommended (if equipped)
Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K081074HD)
from
$70.99
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:
See More
Product Features:
- The patented material provides optimal performance at prolonged extreme 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 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)
Gates – FleetRunner Heavy-Duty V-Belt (Part No.9435HD)
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:
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Product Features:
- Patented material provides peak performance at extremely prolonged operating temperatures
- Crack, wear, oil, and heat resistant construction
- The special compound provides unprecedented flexibility, stability, load-bearing capacity and belt life.
- Unique notch pattern offers greater flexibility for smaller diameter pulleys
- Problem solver for failed disks
- Engineered to save your fleet money and reduce downtime
- Meets RMA standards for oil and heat resistance and static conductivity requirements
Gates – Automotive XL High Capacity V-Belt (Part No.9435)
from
$23.79
Product Features:
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- Fiber-loaded rubber mount adds flexibility along the belt and provides greater lateral stability on 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
Top Picks for 2021 Freightliner B2 Radiator Hoses
Upgrade Freightliner B2s with top-quality Radiator Hoses parts, including 1 OEM and aftermarket selections for your 2021 model.
Gates – Green Stripe Heavy-Duty Straight Heater Hose (Sold by foot) (Part No.28441)
from
$4.79
Heavy-duty construction assures dependable operation in truck, bus and off-road equipment heater systems. For a maintenance free connection, install with Power-Grip SB clamps. Approved for marine applications.
Product Features:
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Product Features:
- Green strip construction offers the best cost per mile
- Abrasion resistant cover
- Engineered with materials to resist electrochemical degradation
- Reduces water loss from water permeating the hose wall and cover
- Exceeds SAE 20R1 Type EC (Class D-1 tube and cover Standard Wall)
- Temperature Range: -40 Deg. F to +275 Deg. F (-40 Deg. C to +135 Deg. C)
- Note: For a maintenance-free connection, use PowerGrip SB clamps
- Caution: Do not use for fuel or oil transportation applications.
- PLEASE NOTE: Item is priced and sold by the foot. See store for details.
In-Demand Belt Tensioners for 2021 Freightliner B2s
Select from 2 premium Belt Tensioners parts for your 2021 Freightliner B2, with prices ranging from $91.99 to $229.99.
Gates – FleetRunner Heavy-Duty Automatic Belt Drive Tensioner (Part No.38766)
from
$229.99
Product Features:
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- Optimized components engineered for maximum strength and durability
- Patented design provides superior belt alignment and tension for improved drive efficiency and 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 flex-fatigue than flat-spring designs
Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89475)
from
$91.99
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:
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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
FAQs for 2021 Freightliner B2 Belts and Hoses
Which Belts and Hoses are best-sellers for 2021 Freightliner B2s?
Out of 11 Belts and Hoses that fit 2021 Freightliner B2s, the following parts are the top sellers:
- Bottom Cog V-Belt; 43.5 Inch Long, Exact Fit Premium Quality (19270482) – $21.29
- Molded Coolant Hose (10511320) – $29.99
- Poly Rib Belt HD Serpentine Belt; 71.06 Long, 8 Rib Count, Heavy Duty (19270399) – $62.99
What’s the price range for 2021 Freightliner B2 Belts and Hoses?
Belts and Hose prices for the 2021 Freightliner B2 start at $4.79 and go up to $229.99 for the most premium parts.
What’s the average price of a Belts and Hose for a 2021 Freightliner B2?
The average price for Belts and Hoses for the 2021 Freightliner B2 is $68.98. 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 Freightliner B2 model years?
What are the cheapest Belts and Hoses for my 2021 Freightliner B2?
The cheapest 2021 Freightliner B2 Belts and Hoses we carry in stock are:
- Green Stripe Heavy-Duty Straight Heater Hose (Sold by foot) (10504904) – $4.79
- Bottom Cog V-Belt; 43.5 Inch Long, Exact Fit Premium Quality (19270482) – $21.29
- Automotive XL High Capacity V-Belt (12144018) – $23.79
- Molded Coolant Hose (10511320) – $29.99
- FleetRunner Heavy-Duty V-Belt (10913204) – $32.99
What types of Belts and Hoses do you sell for my 2021 Freightliner B2?
As of 11/2/25, these are some of the most in-demand types of Belts and Hoses for a 2021 Freightliner B2:
Can I get help with 2021 Freightliner B2 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 Freightliner Belts and Hoses and more.
What is your return policy for Freightliner B2 Belts and Hoses?
Advance Auto Parts keeps returns simple. For new Freightliner B2 Belts and Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
