Dayco Automatic Belt Tensioner for Audi A4 A5 A6 A8 Q5 Porsche Cayenne Panamera

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:

Audi > A4 > Mar 2005 - Aug 2009, 3.2L, V6, 24V, DOHC, MPFI, B7, 188kW, EngCode: AUK

Audi > A4 > Apr 2008 - Jun 2012, 3.2L, V6, 24V, DOHC, MPFI, B8, 195kW, EngCode: CALA

Audi > A4 > Jul 2012 - Aug 2014, 3.0L, V6, 24V, DOHC VVT, Direct Inj, B8 QUATTRO, 200kW, EngCode: CMUA, Supercharged

Audi > A5 > Oct 2007 - Feb 2012, 3.2L, V6, 24V, DOHC, MPFI, 8T, 195kW, EngCode: CALA

Audi > A5 > Mar 2012 - Oct 2015, 3.0L, V6, 24V, DOHC VVT, Direct Inj, 8T, 200kW, EngCode: CMUA, Supercharged

Audi > A6 > Oct 2004 - Oct 2007, 2.4L, V6, 24V, DOHC, MPFI, C6, 130kW, EngCode: BDW

Audi > A6 > Jun 2005 - Feb 2009, 3.2L, V6, 24V, DOHC, MPFI, C6, 188kW, EngCode: AUK

Audi > A6 > Jun 2005 - Feb 2009, 3.2L, V6, 24V, DOHC, MPFI, C6, 188kW, EngCode: BKH

Audi > A6 > Nov 2007 - Feb 2009, 2.8L, V6, 24V, DOHC, MPFI, C6, 154kW, EngCode: BDX

Audi > A6 > Mar 2009 - Jun 2011, 3.0L, V6, 24V, DOHC VVT, Direct Inj, C6, 213kW, EngCode: CAJA, Supercharged

Audi > A6 > Jul 2011 - Jan 2013, 3.0L, V6, 24V, DOHC VVT, Direct Inj, C7, 228kW, EngCode: CGWD, Supercharged

Audi > A6 > Jul 2011 - Jan 2013, 3.0L, V6, 24V, DOHC VVT, Direct Inj, C7, 220kW, EngCode: CGWB, Supercharged

Audi > A6 > Jan 2013 - Feb 2015, 3.0L, V6, 24V, DOHC VVT, FSI, C7, 228kW, EngCode: CGWA, Supercharged

Audi > A8 > Nov 2006 - Aug 2010, 3.2L, V6, 24V, DOHC, MPFI, D3, 191kW, EngCode: BPK

Audi > Q5 > Mar 2009 - , 3.2L, V6, 24V, DOHC, FSI, Turbo, 8R, 199kW, EngCode: CALB

Porsche > Cayenne > Jul 2010 - Sep 2014, 3.0L, V6, 24V, DOHC VVT, Direct Inj, 92A, 245kW, EngCode: M06/EC, Supercharged

Porsche > Panamera > Aug 2011 - , 3.0L, V6, 24V, DOHC VVT, SCMPFI, 970, 245kW, EngCode: CGE, Supercharged