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Dayco 28485 Accessory Drive Belt - Fan
| Brand | Dayco 28485 |
|---|---|
| Position | Fan |
| Material | Synthetic rubber compound |
| Top Width | .88 |
| Color | Black |
| Effective Length | 1231.90 |
| Effective Length | 48.50 |
| Outside Circumference | 1248.16 |
| Outside Circumference | 49.14 |
| Angle | 38 |
| Banded Belt | N |
| Belt Construction | Double cog |
| Maximum Operating Temperature | 175 |
| Maximum Operating Temperature | 79.4 |
| Minimum Operating Temperature | -35 |
| Minimum Operating Temperature | -37.2 |
| Standards | Sae j636, sae j637 |
| Fits | — |
Double-cog construction. Helps the belt flex smoothly for reliable accessory drive performance.
Synthetic rubber compound. Built for durable, dependable operation in demanding conditions.
SAE J636, J637 standards. Meets recognized industry specifications for accessory drive belts.
Cross-references ACDelco 2T28483, ACDelco T28483 and CARQUEST 2/TR28483PB for the same application. See all 31.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Dayco 28485 Accessory Drive Belt Overview
The Dayco 28485 accessory drive belt is built from a synthetic rubber compound with a double-cog construction for dependable belt tracking and flexibility. It measures 0.88 in. top width and 48.50 in. effective length, with a 49.14 in. outside circumference for applications that call for this exact size.
Compatible With accessory drive belt system applications that specify Dayco 28485, this black serpentine-style belt is engineered to operate across a wide temperature range and meet SAE J636 and SAE J637 standards. It is a direct-fit option for vehicle service work where accurate belt dimensions matter.
Key Features
- Synthetic rubber compound construction for everyday accessory drive service
- Double-cog profile for improved flexibility around pulleys
- 0.88 in. top width for the specified belt routing
- 48.50 in. effective length and 49.14 in. outside circumference
- Rated for temperatures from -35°F to 175°F
- Built to SAE J636 and SAE J637 standards
- Black finish for a clean OE-style appearance
Detailed Description
Dayco 28485 is an accessory drive belt designed for vehicles that require a 38-degree belt angle and a double-cog profile. The belt’s synthetic rubber compound helps maintain consistent performance in accessory drive systems, while the cogged construction supports flexibility as the belt wraps around pulleys and tensioners. If you are servicing a belt-driven charging, cooling, or accessory system on a Ford F-150, Chevrolet Silverado, or similar truck application that uses this size, verifying the part number and dimensions is the correct way to confirm fitment. This part cross-references Gates 692 for the same application.
What This Belt Helps Address
- Squealing or chirping from a worn accessory drive belt
- Cracking, glazing, or visible wear on the belt surface
- Loss of accessory drive performance from belt stretch or slip
- Incorrect belt length after prior service or replacement
- Noise caused by poor belt tracking across pulleys
Installation Notes and Tips
Before installation, compare the old belt’s routing, width, and length to Dayco 28485 and inspect pulleys, tensioners, and idlers for wear. Confirm the belt angle and outside circumference match the vehicle’s original specification before starting the repair. After installation, verify proper tracking and tension with the engine running.
Quality Assurance
Dayco manufactures accessory drive components to meet SAE J636 and SAE J637 standards, supporting consistent fit and performance in belt-driven systems. Always confirm the part number 28485 against the vehicle’s required belt specification before ordering.
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