Dayco Automatic Belt Tensioner for BMW 135i 1M 335i

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 > 135i > May 2008 - Aug 2013, 3.0L, 6 cyl, 24V, V-DOHC, TTMPFI, Twin Turbo, E82, 225kW, EngCode: N54B30A

BMW > 135i > May 2008 - Oct 2010, 3.0L, 6 cyl, 24V, V-DOHC, TTMPFI, Twin Turbo, E88, 225kW, EngCode: N54B30A

BMW > 1M > Jun 2011 - , 3.0L, T6, 24V, V-DOHC, TMPFI, Twin Turbo, E82, 250kW, EngCode: N54B30

BMW > 335i > Oct 2006 - Mar 2010, 3.0L, 6 cyl, 24V, DOHC, TMPFI, Turbo, E93, 225kW, EngCode: N54B30A

BMW > 335i > Oct 2006 - Mar 2010, 3.0L, 6 cyl, 24V, DOHC, TMPFI, Turbo, E92, 225kW, EngCode: N54B30A

BMW > 335i > Dec 2006 - Mar 2010, 3.0L, 6 cyl, 24V, DOHC, TMPFI, Turbo, E90, 225kW, EngCode: N54B30A

BMW > 335i > Jun 2007 - Mar 2010, 3.0L, 6 cyl, 24V, DOHC, TMPFI, Turbo, E91, 225kW, EngCode: N54B30A

BMW > 335i > Oct 2009 - Sep 2012, 3.0L, 6 cyl, 24V, DOHC, TMPFI, Turbo, E91, 225kW, EngCode: N55B30A

BMW > 335i > Apr 2010 - Jan 2012, 3.0L, 6 cyl, 24V, DOHC, TMPFI, Turbo, E90, 225kW, EngCode: N55B30A

BMW > 335i > Apr 2010 - Jan 2014, 3.0L, 6 cyl, 24V, DOHC, TMPFI, Turbo, E92, 225kW, EngCode: N55B30A

BMW > 335i > Apr 2010 - Jan 2014, 3.0L, 6 cyl, 24V, DOHC, TMPFI, Turbo, E93, 225kW, EngCode: N55B30A