Dayco Automatic Belt Tensioner BMW 116i 118i 120i 316ti 318Ci 318i 318Ti 320i

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 > 116i > Feb 2005 - Feb 2008, 1.6L, 4 cyl, 16V, V-DOHC, MPFI, E87, 85kW, EngCode: N45B16

BMW > 116i > Mar 2008 - Sep 2011, 1.6L, 4 cyl, 16V, DOHC VVT, MPFI, E87, 90kW, EngCode: N43B16A

BMW > 118i > Feb 2005 - Feb 2007, 2.0L, 4 cyl, 16V, V-DOHC, MPFI, E87, 95kW, EngCode: N46B20

BMW > 118i > Mar 2007 - Sep 2011, 2.0L, 4 cyl, 16V, V-DOHC, MPFI, E87, 100kW, EngCode: N46B20

BMW > 120i > Oct 2004 - Feb 2007, 2.0L, 4 cyl, 16V, V-DOHC, MPFI, E87, 110kW, EngCode: N46B20

BMW > 120i > Feb 2007 - Sep 2011, 2.0L, 4 cyl, 16V, V-DOHC, MPFI, E87, 115kW, EngCode: N43B20

BMW > 120i > Mar 2007 - Sep 2011, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E87, 115kW, EngCode: N46B20

BMW > 120i > Mar 2008 - Jan 2015, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E88, 115kW, EngCode: N46B20

BMW > 120i > Nov 2008 - Jan 2015, 2.0L, 4 cyl, 16V, V-DOHC, MPFI, E88, 115kW, EngCode: N43B20

BMW > 120i > Apr 2011 - Feb 2014, 2.0L, 4 cyl, 16V, V-DOHC, MPFI, E82, 115kW, EngCode: N43B20

BMW > 120i > Apr 2011 - Feb 2014, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E82, 115kW, EngCode: N46B20

BMW > 316ti > Nov 2001 - Jul 2005, 1.8L, 4 cyl, 16V, DOHC, MPFI, E46, 85kW, EngCode: N42B18A

BMW > 318Ci > Mar 2001 - Mar 2003, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E46, 105kW, EngCode: N42B20

BMW > 318Ci > Mar 2001 - May 2006, 2.0L, 4 cyl, 16V, DOHC, MPFI, E46, 105kW, EngCode: N46B20

BMW > 318i > Mar 2001 - Apr 2005, 2.0L, 4 cyl, 16V, DOHC, MPFI, E46, 105kW, EngCode: N46B20

BMW > 318i > Oct 2001 - Jan 2004, 2.0L, 4 cyl, 16V, DOHC, MPFI, E46, 105kW, EngCode: N42B20

BMW > 318Ti > Apr 2001 - Feb 2004, 2.0L, 4 cyl, 16V, DOHC, MPFI, E46, 105kW, EngCode: N42B20

BMW > 318Ti > Oct 2003 - Dec 2004, 2.0L, 4 cyl, 16V, DOHC, MPFI, E46, 105kW, EngCode: N46B20

BMW > 320i > Mar 2005 - Sep 2012, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E91, 110kW, EngCode: N46B20

BMW > 320i > May 2005 - Jan 2012, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E90, 110kW, EngCode: N46B20

BMW > 320i > Oct 2006 - Jan 2010, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E92, 115kW, EngCode: N46NB20

BMW > 320i > Oct 2006 - Jan 2010, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E93, 115kW, EngCode: N46NB20

BMW > 320i > May 2007 - Feb 2010, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E90, 115kW, EngCode: N46NB20

BMW > 320i > Dec 2012 - , 2.0L, 4 cyl, 16V, DOHC, TMPFI, F31, 135kW, EngCode: N20B20B

BMW > 320i > May 2013 - , 2.0L, 4 cyl, 16V, DOHC, TMPFI, F34, 135kW, EngCode: N20B20B

BMW > 330i > Oct 2015 - , 2.0L, 4 cyl, 16V, DOHC VVT, TMPFI, F30, 185kW, EngCode: N20B20B

BMW > 330i > Oct 2015 - , 2.0L, 4 cyl, 16V, DOHC VVT, TMPFI, F31, 185kW, EngCode: N20B20B

BMW > 420i > May 2016 - , 2.0L, 4 cyl, 16V, DOHC VVT, Direct Inj, Turbo, F32/33/36, 135kW, EngCode: B48B20

BMW > X1 > Apr 2010 - Aug 2012, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E84 18i, 110kW, EngCode: N46B20B

BMW > Z4 > Jun 2004 - Aug 2008, 2.0L, 4 cyl, 16V, DOHC VVT, MPFI, E85, 110kW, EngCode: N46B20