Peterbilt 388 Belts and Hoses

Essential Peterbilt 388 Belts and Hoses

Litens – Idler Pulley: Direct Fit, Steel, 74mm Diameter, w/ Hardware (Part No.900566A)

Idler Pulley: Direct Fit, Steel, 74mm Diameter, w/ Hardware

from

$90.99
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 is made of high strength steel for improved life and durability. This pulley conforms to original equipment material, tolerances, and specifications. This part fits Heavy Duty truck applications including 2000-2008 Kenworth with C13/C15. Comes pre-assembled with a new installation bolt and dust shield. 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 – DRIVEALIGN PULLEY (Part No.36164)

DRIVEALIGN PULLEY

from

$109.99
DRIVEALIGN PULLEY

Gates – Molded 45 Degree Silicone Coolant Hose (Part No.28200)

Molded 45 Degree Silicone Coolant Hose

from

$249.99
Newer heavy-duty engines with advanced emissions systems (from 2007 to current model year) produce higher under-hood temperatures, requiring the use of silicone coolant hose. In these new low engine-air-flow and high-heat conditions, Gates Silicone Coolant Hose is the perfect product.

Product Features:
  • Premium 4-ply construction
  • High-heat resistance material meets or exceeds OE specifications
  • Multiple layers of first grade silicone material
  • Industry standard blue cover and orange tube for easy identification
  • Polyester knit reinforcement, unaffected by permeation of coolants and heat
  • Extra thick and resilient tube prevents cold water leaks and hardening under effect of heat
  • High-grade silicone cover resists coolants, ozone, weathering, sunlight and extreme ambient temperatures
  • Exceeds requirements of SAE J20R1, Class A
  • Temperature Range: -65 Deg. F to +350 Deg. F (-54 Deg. C to +177 Deg. C)
  • Gates also offers application-specific molded silicone coolant hose for exact dimensional specifications
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Dayco No Slack Gold Label – Serpentine Belt Tensioner; 1 Piece, HD, Engineered To Handle Higher Torque (Part No.89440)

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

from

$179.99
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
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Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910586A)

Accessory Drive Belt Tensioner - Original Equipment Quality

from

$135.99
Designed and engineered by one of the world’s largest Original Equipment suppliers of accessory drive tensioners and pulleys. 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:
  • 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.
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Gates – FleetRunner« Heavy-Duty Automatic Belt Drive Tensioner (Part No.38715)

FleetRunner« Heavy-Duty Automatic Belt Drive Tensioner

from

$401.99
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
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Dayco – Straight Radiator Hose, Standard (Sold by inch) (Part No.76250)

Straight Radiator Hose, Standard (Sold by inch)

from

$1.79
Designed for a wide range of light and heavy duty truck applications where the radiator hose routing is relatively straight, Dayco’s Straight Radiator Hose features knitted einforcement and synthetic EPDM rubber construction. It meets SAE J20R4, Class D-2 requirements and provides high strength and resistance to ozone and other detrimental environmental elements, coolants, and temperature variations from -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C). Note: This hose is NOT suitable for fuel or oil transfer.

Product Features:
  • Meets SAE J20R4, Class D-2 requirements
  • Features a high strength knitted reinforcement and synthetic EPDM rubber construction
  • Resistant to standard coolants, ozone and other detrimental environmental elements
  • Works well in temperatures ranging from -40 Degree F (-40 Degree C) to +257 Degree F (+125 Degree C)
  • PLEASE NOTE: Priced and sold by inch. See store for details.
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Gates – Molded 90 Degree Silicone Coolant Hose (Part No.28212)

Molded 90 Degree Silicone Coolant Hose

from

$148.99
Newer heavy-duty engines with advanced emissions systems (from 2007 to current model year) produce higher under-hood temperatures, requiring the use of silicone coolant hose. In these new low engine-air-flow and high-heat conditions, Gates Silicone Coolant Hose is the perfect product.

Product Features:
  • Premium 4-ply construction
  • High-heat resistance material meets or exceeds OE specifications
  • Multiple layers of first grade silicone material
  • Industry standard blue cover and orange tube for easy identification
  • Polyester knit reinforcement, unaffected by permeation of coolants and heat
  • Extra thick and resilient tube prevents cold water leaks and hardening under effect of heat
  • High-grade silicone cover resists coolants, ozone, weathering, sunlight and extreme ambient temperatures
  • Exceeds requirements of SAE J20R1, Class A
  • Temperature Range: -65 Deg. F to +350 Deg. F (-54 Deg. C to +177 Deg. C)
  • Gates also offers application-specific molded silicone coolant hose for exact dimensional specifications
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Gates – Diesel Emissions Fluid (DEF) SCR Hose Assembly (Part No.DEF7043)

Diesel Emissions Fluid (DEF) SCR Hose Assembly

from

$383.99
Product Features:
  • Patented carbon-fiber heating provides design flexibility and allows faster thaw times with reduced power consumption
  • Designed to match OE performance
  • Over-molded ends encapsulate electrical connections and provide weatherproof performance
  • SAE J2044 quick-connect couplings
  • Temperature range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +135 Deg. C)
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Gates – Diesel Emissions Fluid (DEF) SCR Hose Assembly (Part No.DEF7001)

Diesel Emissions Fluid (DEF) SCR Hose Assembly

from

$74.99
Product Features:
  • Patented carbon-fiber heating provides design flexibility and allows faster thaw times with reduced power consumption
  • Designed to match OE performance
  • Over-molded ends encapsulate electrical connections and provide weatherproof performance
  • SAE J2044 quick-connect couplings
  • Temperature range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +135 Deg. C)
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Gates – Diesel Emissions Fluid (DEF) SCR Hose Assembly (Part No.DEF7057)

Diesel Emissions Fluid (DEF) SCR Hose Assembly

from

$58.99
Product Features:
  • Patented carbon-fiber heating provides design flexibility and allows faster thaw times with reduced power consumption
  • Designed to match OE performance
  • Over-molded ends encapsulate electrical connections and provide weatherproof performance
  • SAE J2044 quick-connect couplings
  • Temperature range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +135 Deg. C)
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Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 86.5mm Dia., 39.4mm Width, Smooth (Part No.89106)

Serpentine Idler/Tensioner Pulley; Steel, 86.5mm Dia., 39.4mm Width, Smooth

from

$57.99
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
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Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 57mm Width, Smooth (Part No.89110)

Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 57mm Width, Smooth

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
  • Meets or exceeds OE quality
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Dayco – Serpentine Assy. Idler/Tensioner Pulley; Steel, 77mm Dia., 30mm Width, 6 Grooves (Part No.89171)

Serpentine Assy. Idler/Tensioner Pulley; Steel, 77mm Dia., 30mm Width, 6 Grooves

from

$56.99
Dayco idler/tensioner pulleys are built with smoother surfaces and tighter dimensional tolerances, which translates to less vibration and longer belt life. In addition to stamped, forged steel and powdered metal pulleys, Dayco also designs ultra-strong plastic pulleys with specially formulated glass-filled polymers that resist wear & tear. Premium lubricated ball bearings and double high temperature seals ensure peak bearing performance, the most critical element of a pulley’s service life.

Product Features:
  • Designed for the majority of automotive vehicle applications on the road today.
  • High-quality materials help resist wear and improve belt life
  • Features premium lubricated bearings to extend service life
  • Meets or exceeds OE quality
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Gates – DriveAlign½ Belt Drive Idler/Tensioner Pulley (Part No.36227)

DriveAlign½ Belt Drive Idler/Tensioner Pulley

from

$44.99
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
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Litens – Idler/Tensioner Pulley: Direct Fit, Steel, 76mm Diameter (Part No.900459A)

Idler/Tensioner Pulley: Direct Fit, Steel, 76mm Diameter

from

$58.99
This Litens pulley is supplied by one of the largest original equipment tensioner and pulley suppliers in the world and meets all form, fit, and performance characteristics of the original equipment part . The Litens replacement part is constructed of heavy duty steel for long life and trouble free performance. 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 one of the world’s largest Original Equipment suppliers of accessory drive tensioners and pulleys.
  • Heavy Duty Steel Pulley
  • Precision steel stamping with close tolerance ball bearing pocket.
  • Electro-deposited coating (e-coat) for superior corrosion resistance.
  • Running surface designed and engineered for proper belt tracking.
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Litens – Idler Pulley: Direct Fit, Steel, 83.5mm Diameter (Part No.900376A)

Idler Pulley: Direct Fit, Steel, 83.5mm Diameter

from

$66.99
This pulley is manufactured by Litens Automotive – inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part meets all performance and durability requirements. Fits Heavy Duty truck applications including International 5000 and 9000 series vehicles. Comes complete with new dust shield. 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 one of the world’s largest Original Equipment suppliers of accessory drive tensioners and pulleys.
  • Heavy Duty Steel Pulley
  • Precision steel stamping with close tolerance ball bearing pocket.
  • Electro-deposited coating (e-coat) for superior corrosion resistance.
  • Running surface designed and engineered for proper belt tracking.
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Dayco – Poly Rib Belt Serpentine Belt; 64 Long, 6 Rib Count (Part No.5060640)

Poly Rib Belt Serpentine Belt; 64 Long, 6 Rib Count

from

$33.49
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mile

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
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Dayco – Poly Rib Belt Serpentine Belt; 60.5 Long, 6 Rib Count (Part No.5060605)

Poly Rib Belt Serpentine Belt; 60.5 Long, 6 Rib Count

from

$37.99
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
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Gates – V-Ribbed (Heavy Duty) Serpentine Belt: 91.875" Long, 8 Rib Count, Exact Fit (Part No.K080913HD)

V-Ribbed (Heavy Duty) Serpentine Belt: 91.875" Long, 8 Rib Count, Exact Fit

from

$91.99
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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Gates – V-Ribbed (Heavy Duty) Serpentine Belt: 73.5" Long, 8 Rib Count, Exact Fit (Part No.K080730HD)

V-Ribbed (Heavy Duty) Serpentine Belt: 73.5" Long, 8 Rib Count, Exact Fit

from

$96.99
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 – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5" Long, 2.50" Diameter (Part No.B71812)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5" Long, 2.50" Diameter

from

$21.49
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 – Molded Silicone Coolant Hose (Part No.28359)

Molded Silicone Coolant Hose

from

$97.99
Product Features:
  • Same dimensional specifications of the OEM hose
  • Silicone cover resists high temperature ambient environments
  • 3-ply polyester woven fabric reinforcement guarantees high burst strength & superior service life
  • Tube constructed w/ a thick silicone liner designed to handle coolants, including new extended life coolants
  • Provides long-life service in both low & high temperature environments
  • Temperature range: -65 Deg. F to +350 Deg. F (-54 Deg. C to +149 Deg. C)
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Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 2.50" Diameter (Part No.C71813)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 2.50" Diameter

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
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Helping You Find the Right Belts and Hoses for Your Peterbilt 388

You love your 388. So we’ve made it easier than ever to help you find Peterbilt 388 Belts and Hoses in our online catalog. Our inventory holds 94 aftermarket and OEM Belts and Hoses for your Peterbilt 388, ranging from $1.79 to $401.99.

We offer parts from 4 brands trusted to make quality Belts and Hoses for your Peterbilt 388. Before you buy, take some time to read through customer reviews. We currently have 1,636 reviews of Peterbilt 388 Belts and Hoses from previous customers. Some of the top rated parts include Poly Rib Belt Serpentine Belt; 61.02 Long, 6 Rib Count with 5.0 stars and Serpentine Assy. Idler/Tensioner Pulley; Steel, 77mm Dia., 30mm Width, 6 Grooves with 3.0 stars.

Find your 388 Belts and Hoses here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your Peterbilt 388 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 Peterbilt 388

Our inventory holds Belts and Hoses for your Peterbilt 388 from 4 trusted brands. You’ll find OEM and aftermarket parts from brands like Dayco, Driveworks, and Litens, all of which can keep that Peterbilt happy.

Top-Rated Dayco Belts and Hoses

Leading Dayco Belts and Hoses

We carry Dayco brand parts for your Peterbilt 388 across several catalog categories, including Serpentine and V Belts. Some of our most reviewed Dayco parts include:
Poly Rib Belt Serpentine Belt; 60.5 Long, 6 Rib Count
from $37.99
(268)
Poly Rib Belt Serpentine Belt; 60.5 Long, 6 Rib Count
Serpentine Belts
Poly Rib Belt Serpentine Belt; 76.25 Long, 7 Rib Count
from $44.99
(72)
Poly Rib Belt Serpentine Belt; 76.25 Long, 7 Rib Count
Serpentine Belts
Poly Rib Belt Serpentine Belt; 64 Long, 6 Rib Count
from $33.49
(16)
Poly Rib Belt Serpentine Belt; 64 Long, 6 Rib Count
Serpentine Belts

FAQs for Peterbilt 388 Belts and Hoses

What are the most purchased Belts and Hoses for the Peterbilt 388?

Out of 94 Belts and Hoses for the Peterbilt 388, the most popular in our inventory are:
Poly Rib Belt Serpentine Belt; 60.5 Long, 6 Rib Count
from $23.99
(21)
Poly Rib Belt Serpentine Belt; 60.5 Long, 6 Rib Count
Serpentine Belts
Poly Rib Belt Serpentine Belt; 76.25 Long, 7 Rib Count
from $30.49
(17)
Poly Rib Belt Serpentine Belt; 76.25 Long, 7 Rib Count
Serpentine Belts
Poly Rib Belt Serpentine Belt; 64 Long, 6 Rib Count
from $18.79
(4)
Poly Rib Belt Serpentine Belt; 64 Long, 6 Rib Count
Serpentine Belts

What are the top-rated Peterbilt 388 Belts and Hoses?

Top-rated Belts and Hoses for your Peterbilt 388 based on customer reviews/ratings are:
Idler Pulley: Direct Fit, Steel, 78mm Diameter
from $62.99
(1)
Idler Pulley: Direct Fit, Steel, 78mm Diameter
“What a cheap piece of plastic sheet metal push on washer are you kidding me Junk save your money stick with Dayco”