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Dayco 17635 Accessory Drive Belt
| Brand | Dayco 17635 |
|---|---|
| Position | Power Steering and Air Conditioning |
| Angle | 36 |
| Belt Construction | Top Cog |
| Color | Black |
| Effective Length | 63.50 |
| Effective Length | 1612.90 |
| Material | Synthetic Rubber Compound |
| Maximum Operating Temperature | 79.4 |
| Maximum Operating Temperature | 175 |
| Minimum Operating Temperature | -37.2 |
| Minimum Operating Temperature | -35 |
| Outside Circumference | 63.77 |
| Outside Circumference | 1619.76 |
| Standards | SAE J636, SAE J637 |
| Top Width | .53 |
| Fits | American Motors, Ford, and Mercury · 22 vehicles |
Top-cog construction. Helps the belt flex smoothly for consistent accessory drive performance.
Synthetic rubber compound. Built for dependable strength and long service in demanding conditions.
SAE J636, J637. Meets recognized industry standards for accessory drive belts.
Cross-references ACDelco 9635HD, ACDelco 17635 and AMC 3215365 for the same application. See all 77.
Dayco 17635 Accessory Drive Belt Overview
The Dayco 17635 accessory drive belt is built for accessory drive applications that demand stable belt tracking and consistent power transfer. It is a top cog belt made from a synthetic rubber compound, with a black finish and a 36-degree angle profile for the listed fitments.
Compatible With 1969-1971 Ford E-100 Econoline, Air Conditioning; 1969-1971 Ford F-100, Air Conditioning; 1969-1971 Ford F-250, Air Conditioning; 1969-1971 Ford F-350, Air Conditioning; and 1968 Mercury Marquis, Air Conditioning and Air Pump.
Key Features
- Dayco accessory drive belt, part number 17635
- Synthetic rubber compound construction for everyday belt service
- Top cog design for flexibility and pulley engagement
- Black belt finish with a .53 top width
- Effective length: 63.50 in. / 1612.90 mm
- Outside circumference: 63.77 in. / 1619.76 mm
- Operating temperature range: -35 to 175 degrees
- Built to SAE J636 and SAE J637 standards
Detailed Description
Dayco 17635 is an accessory drive belt specified for classic Ford and Mercury applications, including air conditioning and air pump drive setups. The belt’s top cog construction improves flexibility around pulleys, while the synthetic rubber compound supports dependable operation across a wide temperature range. If you are replacing a worn belt on a 1969-1971 Ford F-100, F-250, or F-350 with air conditioning, or servicing a 1968 Mercury Marquis with air conditioning and air pump equipment, this belt matches the listed dimensions and application data. This part cross-references Gates 9635 and ACDelco 9635HD for the same application.
Common Problems This Belt Can Address
- Squealing or slipping accessory drive belt noise
- Cracking, glazing, or visible wear on the existing belt
- Poor accessory drive performance from a stretched belt
- Loss of belt tension on air conditioning drive systems
- Inconsistent operation of belt-driven accessories
Installation Notes and Tips
Verify pulley alignment, belt routing, and tensioner condition before installation. Compare the existing belt length and profile to the Dayco 17635 specifications, especially on 1969-1971 Ford E-100 Econoline and F-Series air conditioning applications. Inspect related pulleys and accessory brackets for wear that could shorten belt life.
Quality Assurance
This Dayco belt is manufactured to SAE J636 and SAE J637 standards for accessory drive belt applications. Its temperature range and top cog construction reflect the requirements of classic vehicle accessory drive service.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1971 | Ford | E-100 Econoline | 3.9L | L6 | Air Conditioning | — |
| 1971 | Ford | F-100 | 3.9L | L6 | Air Conditioning | — |
| 1971 | Ford | F-100 | 4.9L | L6 | Air Conditioning | — |
| 1971 | Ford | F-250 | 3.9L | L6 | Air Conditioning | — |
| 1971 | Ford | F-250 | 4.9L | L6 | Air Conditioning | — |
| 1971 | Ford | F-350 | 3.9L | L6 | Air Conditioning | — |
| 1971 | Ford | F-350 | 4.9L | L6 | Air Conditioning | — |
| 1970 | Ford | E-100 Econoline | 3.9L | L6 | Air Conditioning | — |
| 1970 | Ford | F-100 | 3.9L | L6 | Air Conditioning | — |
| 1970 | Ford | F-100 | 4.9L | L6 | Air Conditioning | — |
| 1970 | Ford | F-250 | 3.9L | L6 | Air Conditioning | — |
| 1970 | Ford | F-250 | 4.9L | L6 | Air Conditioning | — |
| 1970 | Ford | F-350 | 3.9L | L6 | Air Conditioning | — |
| 1970 | Ford | F-350 | 4.9L | L6 | Air Conditioning | — |
| 1969 | Ford | E-100 Econoline | 3.9L | L6 | Air Conditioning | — |
| 1969 | Ford | F-100 | 3.9L | L6 | Air Conditioning | — |
| 1969 | Ford | F-100 | 4.9L | L6 | Air Conditioning | — |
| 1969 | Ford | F-250 | 3.9L | L6 | Air Conditioning | — |
| 1969 | Ford | F-250 | 4.9L | L6 | Air Conditioning | — |
| 1969 | Ford | F-350 | 3.9L | L6 | Air Conditioning | — |
| 1969 | Ford | F-350 | 4.9L | L6 | Air Conditioning | — |
| 1968 | Mercury | Marquis | 7.0L | V8 | Air Conditioning and Air Pump | — |
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