Dayco Automatic Belt Tensioner for Ford Focus Mazda 3

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 > Focus > May 2005 - Jun 2009, 2.0L, 4 cyl, 16V, DOHC, MPFI, LS, EngCode: DURATEC

Ford > Focus > Jul 2007 - Mar 2009, 2.0L, 4 cyl, 16V, DOHC, MPFI, LT, EngCode: DURATEC

Ford > Focus > Jun 2008 - 2009, 2.0L, 4 cyl, 16V, DOHC, MPFI, LV (SPAIN), 107kW, EngCode: DURATEC (AODB, AODE)

Ford > Focus > May 2015 - Jan 2019, 2.0L, 4 cyl, 16V, DOHC, CRD, Turbo, Diesel, LW/LZ, 110kW, EngCode: T7DB, NZ

Mazda > 3 > Oct 2003 - May 2006, 2.0L, 4 cyl, 16V, DOHC, MPFI, BK, 104kW, EngCode: LFDE

Mazda > 3 > Jan 2004 - Mar 2009, 2.3L, 4 cyl, 16V, DOHC, MPFI, BK SP23, 115kW, EngCode: L3

Mazda > 3 > Mar 2006 - May 2009, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, BK, 108kW, EngCode: LFDE

Mazda > 3 > Apr 2009 - Jan 2014, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, BL, 108kW/113kW, EngCode: LFDE