Dayco Automatic Belt Tensioner Chrysler 300 Jeep Cherokee Mercedes C320 CDI C350

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:

Chrysler > 300 > Jun 2006 - Jan 2012, 3.0L, V6, 24V, DOHC, CRD, Turbo, Diesel, 160kW, EngCode: EXF

Jeep > Commander > May 2006 - Mar 2010, 3.0L, V6, 24V, DOHC, CRD, Turbo, Diesel, XH, 160kW, EngCode: EXL

Jeep > Grand Cherokee > Jun 2005 - Jan 2011, 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, WH, 160kW, EngCode: EXL

Mercedes Benz > C320 CDI > 2005 - 2007, 3.0L, V6, 24V, DOHC VVT, CRD Turbo, Diesel, W203, EngCode: OM642.910

Mercedes Benz > C320 CDI > Nov 2007 - Feb 2010, 3.0L, V6, 24V, DOHC, DTFI, Diesel, W204, 165kW, EngCode: OM642.960

Mercedes Benz > C350 CDI > Mar 2010 - , 3.0L, V6, 24V, DOHC, DTFI, Diesel, W204, 165kW, EngCode: OM642.960

Mercedes Benz > C350 CDI > Jun 2011 - , 3.0L, V6, 24V, DOHC, CRD, Turbo, Diesel, W204, 195kW, EngCode: OM642.834

Mercedes Benz > CLS320 CDI > 2005 - 2009, 3.0L, V6, 24V, DOHC, CRD, Diesel, C219, 165kW, EngCode: OM642.920

Mercedes Benz > CLS350 CDI > Jul 2011 - , 3.0L, V6, 24V, DOHC, CRD, Turbo, Diesel, C218, 195kW, EngCode: OM642.853

Mercedes Benz > E280 CDI > Sep 2005 - Sep 2009, 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, W211, EngCode: OM642.920

Mercedes Benz > E350 CDI > Oct 2009 - Jan 2011, 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, W212, 170kW, EngCode: OM642.850

Mercedes Benz > E350 CDI > 2011 - , 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, W207, 195kW, EngCode: OM642.836

Mercedes Benz > E350 CDI > 2011 - 2013, 3.0L, V6, 24V, DOHC VVT, DTFI, Turbo, Diesel, A207, 195kW, EngCode: OM642.838

Mercedes Benz > E350 CDI > 2011 - 2013, 3.0L, V6, 24V, DOHC VVT, DTFI, Turbo, Diesel, C207, 195kW, EngCode: OM642.838

Mercedes Benz > E350 CDI > Jun 2011 - , 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, W212, 195kW, EngCode: OM642.852

Mercedes Benz > GL320 CDI > Nov 2006 - Jan 2010, 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, X164, EngCode: OM642.940

Mercedes Benz > GL350 CDI > Jan 2010 - , 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, X164, EngCode: OM642.940

Mercedes Benz > GL350 > Apr 2013 - Apr 2016, 3.0L, V6, 24V, DOHC, CRD, Turbo, Diesel, X166, EngCode: OM642.826

Mercedes Benz > GLC350D > Jun 2017 - Aug 2019, 3.0L, V6, 24V, DOHC, CRD, Turbo, Diesel, X253, 190kW, EngCode: OM642.826

Mercedes Benz > GLC350D > Jun 2017 - Aug 2019, 3.0L, V6, 24V, DOHC, CRD, Turbo, Diesel, C253, 190kW, EngCode: OM642.826

Mercedes Benz > GLE350d > Oct 2015 - , 3.0L, V6, 24V, DOHC VVT, CRD, Turbo, Diesel, C292, 190kW, EngCode: OM642.826

Mercedes Benz > GLE350d > Oct 2015 - , 3.0L, V6, 24V, DOHC VVT, CRD, Turbo, Diesel, W166, 190kW, EngCode: OM642.826

Mercedes Benz > GLS350d > Apr 2016 - , 3.0L, V6, 24V, DOHC, CRD, Turbo, Diesel, X166, 166.824, 190kW, EngCode: OM642.826

Mercedes Benz > ML280 CDI > Oct 2006 - Apr 2008, 3.0L, 5 cyl, 20V, DOHC, TCDI, Turbo, Diesel, W164, EngCode: M642.920

Mercedes Benz > ML280 CDI > Oct 2006 - Nov 2009, 3.0L, V6, 24V, DOHC VVT, CRD Turbo, Diesel, W164, 140kW, EngCode: OM642.940

Mercedes Benz > ML280 CDI > May 2008 - Nov 2009, 3.0L, 5 cyl, 20V, DOHC, TCDI, Turbo, Diesel, W164, EngCode: M642.920

Mercedes Benz > ML300 CDI > Dec 2009 - Jan 2011, 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, W164, EngCode: M642.940

Mercedes Benz > ML300 CDI > Feb 2011 - Mar 2012, 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, W164, EngCode: M642.820

Mercedes Benz > ML320 CDI > Sep 2005 - Nov 2009, 3.0L, V6, 24V, DOHC VVT, CRD Turbo, Diesel, W164, 165kW, EngCode: OM642.940

Mercedes Benz > ML350 CDI > Dec 2009 - Jan 2011, 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, W164, 165kW, EngCode: M642.940

Mercedes Benz > ML350 CDI > Feb 2011 - Mar 2012, 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, W164, 165kW, EngCode: M642.820

Mercedes Benz > ML350 CDI > Apr 2012 - , 3.0L, 4 cyl, 16V, DOHC, DTFI, Turbo, Diesel, W166, 190kW, EngCode: M642.826

Mercedes Benz > R300 CDI > Jan 2010 - , 3.0L, V6, 24V, DOHC, DTFI, Diesel, W251, EngCode: OM642.950

Mercedes Benz > R320 CDI > Apr 2006 - Feb 2008, 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W251, EngCode: OM642.950

Mercedes Benz > R350 CDI > Jan 2010 - , 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W251, EngCode: OM642.950

Mercedes Benz > S320 CDI > May 2008 - Sep 2009, 3.0L, V6, 24V, DOHC, DTFI, Turbo, Diesel, W221, 173kW, EngCode: OM642.930

Mercedes Benz > S350 CDI > Oct 2009 - Jan 2011, 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W221, 173kW, EngCode: OM642.930

Mercedes Benz > S350 CDI > Feb 2011 - Oct 2013, 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W221, 190kW, EngCode: OM642.862

Mercedes Benz > S350 CDI > Nov 2013 - , 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W222, 190kW, EngCode: OM642.861

Mercedes Benz > S350d > Sep 2015 - , 3.0L, V6, 24V, DOHC, CRD, Turbo, Diesel, W222, 190kW, EngCode: OM642.861

Mercedes Benz > Sprinter > Oct 2006 - Jan 2010, 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W906 318CDI, 135kW, EngCode: OM642.992

Mercedes Benz > Sprinter > Oct 2006 - Jan 2010, 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W906 518CDI, EngCode: OM642.992

Mercedes Benz > Sprinter > Feb 2008 - Jan 2010, 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W906 418CDI, EngCode: OM642.992

Mercedes Benz > Sprinter > Feb 2010 - Sep 2018, 3.0L, V6, 24V, DOHC VVT, TCDI, Turbo, Diesel, W906 319CDI, 140kW, EngCode: OM642.896

Mercedes Benz > Sprinter > Feb 2010 - Sep 2018, 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W906 419CDI, 140kW, EngCode: OM642.896

Mercedes Benz > Sprinter > Feb 2010 - Sep 2018, 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W906 519CDI, 140kW, EngCode: OM642.896

Mercedes Benz > Viano > 2005 - 2006, 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W639, 150kW, EngCode: OM642.990

Mercedes Benz > Viano > Feb 2011 - , 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, W639, 165kW, EngCode: OM646.890

Mercedes Benz > Vito > Feb 2006 - Jan 2011, 3.0L, V6, 24V, DOHC, TCDI, Turbo, Diesel, 120CDI, 150kW, EngCode: OM642.990