Dayco Automatic Belt Tensioner for BMW 316i 318i 318is 318Ti Z3

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:

BMW > 316i > Mar 1991 - Feb 1994, 1.6L, 4 cyl, 8V, SOHC, MPFI, E36, 73kW, EngCode: M40B16, NZ

BMW > 316i > Feb 1992 - Nov 1998, 1.8L, 4 cyl, 8V, SOHC, MPFI, E36, 85kW, EngCode: M43B18

BMW > 316i > Mar 1995 - Sep 1995, 1.6L, 4 cyl, SOHC, MPFI, E36, 75kW, EngCode: M43B16

BMW > 316i > Oct 1995 - Apr 1999, 1.6L, 4 cyl, SOHC, MPFI, E36, 75kW, EngCode: M43B16

BMW > 318i > Nov 1993 - Feb 1994, 1.8L, 4 cyl, 8V, SOHC, MPFI, E36, 85kW, EngCode: M43B18

BMW > 318i > Mar 1994 - Sep 1999, 1.8L, 4 cyl, 8V, SOHC, MPFI, E36, 85kW, EngCode: M43B18

BMW > 318i > Mar 1996 - Mar 2001, 1.9L, 4 cyl, 16V, DOHC, MPFI, E36, EngCode: M44B19

BMW > 318i > Sep 1998 - Dec 2001, 1.9L, 4 cyl, 8V, SOHC, MPFI, E46, 87kW, EngCode: M43TUB19

BMW > 318is > Jun 1996 - Oct 1999, 1.9L, 4 cyl, 16V, DOHC, EFI, E36, 103kW, EngCode: M44B19

BMW > 318Ti > May 1996 - Aug 2000, 1.9L, 4 cyl, 16V, DOHC, MPFI, E36, 103kW, EngCode: M44B19

BMW > Z3 > Jan 1997 - Jun 1999, 1.9L, 4 cyl, 16V, DOHC, MPFI, E36, EngCode: M44B19