Dayco Automatic belt tensioner for Ford Bronco F100 F150 F250 F350

Dayco No Slack Automatic Belt Tensioner

Designed to maintain constant tension on serpentine belt drives
Serpentine belt drives consist of a single belt that powers most, if not all, of the engine’s accessories.

To maintain the proper tension throughout the drive, an automatic, spring-loaded tensioner is incorporated into the drive system geometry.

Dayco’s Automatic Belt Tensioner features a patented “flat spring” design that’s engineered to provide less operating range variations in tension.

This reduces the risk of premature accessory bearing failure due to high tension when a new belt is installed.

It also lessens the risk of belt squeal and slippage, or poor accessory performance caused by low tension after the belt begins to stretch and wear. A Teflon strip wound within the spring resists abrasion.

The flat spring itself is coated to resist rust.

Other superior design features include a steel locator pin (where the application demands).

A heavy-duty cast aluminium spring case resists cracking and fatigue. The heavy-duty cast aluminium arm offers additional strength and less distortion.

An aluminium retainer ring locks the spring case and arm together, and seals against corrosion.

A steel pivot tube (where the application demands) provides additional strength for critical torque requirements.

A thermoplastic rubber “spring slot plug” keeps out harmful contaminants. The lubricated nylon “pivot tube bushing” and “spring bushing” promote quieter performance.

A rubber “O” ring seals against dust and grime.

The zinc coated mounting bolt resists rust, and is concentric for a more even degree of constant tension.

In order to meet OEM performance standards, Dayco Automatic Tensioners come with either a glass-filled polymer (plastic) or steel pulley, that features a dust cover to protect against contaminants.

Fits the following Make, Model, Series:

Ford > Bronco > Sep 1985 - Jul 1987, 4.9L, V8, 16V, OHV, FI, EngCode: Windsor

Ford > F100 > May 1987 - Mar 1988, 4.9L, V8, 16V, OHV, EFI, EngCode: C

Ford > F150 > May 1985 - Mar 1996, 4.9L, V8, 16V, OHV, EFI, 126kW, EngCode: 302 Windsor

Ford > F150 > Jan 1988 - Jan 1996, 5.8L, V8, 16V, OHV, EFI, 144kW, EngCode: 351 Windsor

Ford > F150 > Mar 1988 - Jan 1989, 4.9L, V8, 16V, OHV, EFI, 126kW, EngCode: 302 Windsor

Ford > F150 > Jan 1989 - Jan 1990, 4.9L, V8, 16V, OHV, EFI, 126kW, EngCode: 302 Windsor

Ford > F250 > 1987 - 1992, 5.8L, V8, 16V, OHV, EFI, Ambulance, EngCode: C

Ford > F250 > Sep 1988 - Dec 1989, 4.9L, V8, 16V, OHV, EFI, EngCode: 302 Windsor

Ford > F250 > Jan 1989 - Dec 1989, 4.9L, V8, 16V, OHV, EFI, EngCode: C

Ford > F250 > Jan 1990 - Dec 1990, 5.8L, V8, 16V, OHV, EFI, EngCode: C

Ford > F350 > May 1987 - Mar 1988, 4.9L, V8, 16V, OHV, EFI, EngCode: C

Ford > F350 > Mar 1988 - Jan 1989, 4.9L, V8, 16V, OHV, EFI, EngCode: C

Ford > F350 > Apr 1991 - Dec 1992, 5.8L, V8, 16V, OHV, EFI, EngCode: C