Passenger Side Billet secondary Tensioner 4V DOHC Cobra / GT500

MMR Billet Passenger side DOHC Secondary Tensioner (96-2014 DOHC)

It has been long known that the factory passenger side secondary tensioners on ALL DOHC's tension the chain on the wrong side, this creates cam timing errors as great as 7 degrees (regardless of how the cams are degreed!) This kit from MMR brings the margin of error down to a mere 1 degree. Properly tensioning the chain allows you to degree the cams perfect every time and testing has showed 4-5 MPH gains in the 1/4 mile! Get your timing under control with the MMR tensioner today- a must for any High HP application!! A must for all applications with aftermarket cams or springs. Also fits all 5.4 DOHC including 2007-2014 Shelby GT500. Anodized for Corrosion and wear resistance.

ARP hardware included.

Proudly Made in Camarillo, CA USA


Unlike other brands on the market, the MMR tensioner features a lifetime warranty and is 100% rebuildable and has been tested on the Worlds Fastest and ONLY 5 second 5.4 Ford Modular Engine.

Fits ALL 4.6, 5.4 and 5.8 DOHC applications.

Select Complete tensioner in options below (as shown), or DIY kit that requires your original tensioner parts and assembly.
  • Model: 444036
  • Manufactured by: MMR

Starting at: $189.99

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