Gates 38508 Accessory Drive Belt Tensioner Assembly

Brand Gates 38508
Position Air Conditioning, Fan, Fan To Air Conditioning, and Fan and Alternator
Material Steel
Pulley 1 Flanged No
Bearing Bore Inside Diameter 1.18
Bearing Bore Inside Diameter 30
Width 1.57
Width 40
Outside Diameter 2.95
Outside Diameter 75
Mounting Hole Quantity 1
Belt Type V-ribbed
Pulley Quantity 1
Bearing Bore Inside Diameter 1 (in) 1.18
Bearing Bore Inside Diameter 1 (mm) 30
Belt Type V-ribbed
Contact Surface Smooth/backside
Contents Tensioner assy., bolt
Outside Diameter (in) 2.95
Outside Diameter (mm) 75
Pulley 1 Flanged No
Width (in) 1.57
Width (mm) 40
Fits —

OE direct replacement. Built to meet demanding OEM requirements.

Steel construction. Delivers durable support in a heavy-duty tensioner assembly.

Smooth backside contact. Helps the belt run consistently and quietly.

Cross-references Dayco 89485, Gates 38508 and Litens 910017A for the same application. See all 15.

$171.10Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing β€” free returns if it doesn't
Step 2 — Quantity
Order total $171.10
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Gates DriveAlign Premium OE Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner, part number 38508, is built for accessory drive belt systems that need consistent belt control and stable pulley tracking. It uses a steel housing with a smooth/backside contact surface and a V-ribbed belt profile to support reliable operation in demanding engine bays.

Gates 38508 is part of the DriveAlign Premium OE line, which focuses on OE-style fit and function for accessory drive belt system components. This tensioner assembly is engineered for applications where belt tension stability matters, including many Honda Civic and Toyota Corolla service needs when the listed vehicle fitment matches the application.

Key Features

  • Accessory drive belt tensioner assembly for V-ribbed belt systems
  • Steel construction for durable service in engine compartment conditions
  • Smooth/backside pulley contact surface
  • Single-pulley design with 75 mm outside diameter
  • 30 mm bearing bore inside diameter
  • 40 mm pulley width
  • Includes tensioner assembly and bolt
  • Cross-reference example: Dayco 89485

Detailed Description

This Gates automatic belt tensioner is designed to maintain proper belt tension across the accessory drive system, helping the belt stay aligned as engine speed and load change. The 38508 part number is commonly searched by buyers looking for an OE-style replacement tensioner for Honda Civic and Toyota Corolla applications, especially when matching the original accessory drive belt system layout is important. The DriveAlign Premium OE line is positioned for vehicles that require consistent belt tracking and dependable pulley operation.

With a steel body, one mounting hole, and a smooth pulley contact surface, this tensioner assembly is built around the specifications needed for a direct-fit accessory drive belt system component. Gates 38508 is also referenced by several interchange numbers, making it easier to verify the correct replacement during parts lookup.

What It Helps Fix

  • Belt squeal caused by weak or inconsistent tension
  • Accessory belt flutter or vibration at idle and under load
  • Uneven belt tracking across the pulley path
  • Noise from a worn tensioner pulley or bearing
  • Loss of belt tension that can affect alternator, power steering, or A/C operation

Installation Notes and Tips

Confirm the belt type, pulley dimensions, and mounting layout before installation. Compare the original tensioner to the Gates 38508 part number and verify the vehicle application against the listed fitment data for Honda Civic or Toyota Corolla service. Inspect the accessory belt, idler pulleys, and belt routing at the same time so the new tensioner is installed into a clean, properly aligned system.

Quality Assurance

Gates states that its FleetRunner heavy-duty automatic belt tensioners are engineered to exceed demanding OEM requirements and have shown extended service life in laboratory vibration and contamination testing. That product-line background supports the DriveAlign OE approach to durable accessory drive belt system performance.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 15 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dayco — 89485Gates — 38508Litens — 910017AStant — 495024P29328941091001713521501371788138251419006423600531000DC090727000GT38508VKM910017