MINI Cooper Timing Chain Tensioner

(7 reviews) Write a Review
0.50 LBS
Calculated at Checkout

MINI Cooper Chain Tensioner ONLY. Part #11-31-7-607-551 or #11-31-4-609-482  (which are interchangeable). We highly recommend installing the whole timing chain kit. This is the newest and up to date tensioner. This tensioner will will work on all the Gen 2 cars with an N12 or N16 Cooper engine, or the N14 & N18 Cooper S engine. This tensioner is 82mm, which is longer than the older standard size 78mm tensioner. This part is also bilaterally exchangeable with part number 11-31-4-609-482 and we stock and have both part numbers because MINI will send us both depending on what they have in stock no matter which part number we order. Both tensioners are the same size and length with the same spring. We can't explain why MINI has two part numbers, but they do.

MINI Timing Chain Tensioner. If you start up your car in the morning and you hear a rattling at start up or when it's cold out, then you are having a problem. Once it starts to rattle, it can jump teeth and cause the car to run poorly. It can even get so bad as to be off several teeth; and get to the point you cannot drive it without any check engine lights. We have seen the tensioners come loose from the block, the tensioners completely fail, the chain stretch (badly), as well as the car skips teeth, causing the timing to be off! If you don't want to do the whole kit you can try just adding this longer tensioner. But we still highly recommend installing the full kit. N14 kit or N12/16/18 kit

As an added benefit, we are cryogenically treating the tensioner. The cryogenic “heat treating” process is where the material is cooled to approximately −185°C (−301°F) with the use of liquid nitrogen. This increases the amount of martensite in the steel's crystal structure, increasing its strength and hardness. This in turn will not allow the chain to stretch or the tensioner to fail as quickly, if ever. This keeps your motor in time better as well as run more quietly and last longer with the proper maintenance. Note: Customer must keep oil in the car.

Note: Torque to 48 ft lbs. (65Nm).

7 Reviews

  • 5

    Posted by Samuel Evans on 25th Aug 2022

    Works great! old one was failing and weak. This solved all issues. Fast shipping and great customer service as always

  • 5
    Works great

    Posted by Zach on 7th Jun 2022

    Was a quick straight forward install and has way more tension then the old one I took out. And quieted cold starts right down as I hoped.

  • 5
    great product and support

    Posted by gjm on 25th Jan 2021

    excellent customer service makes this an easy purchase. the install was a bit challenging, but they provided the help we needed.

  • 5
    Did the trick

    Posted by Chris M on 15th Dec 2020

    Bought this updated tensioner when my R60 started making a bit of noise on cold starts. Installation was a breeze and the new part solved my noisy cold start issue. Fast shipping from Detroit tuned is very much appreciated!

  • 5
    Fit like a glove

    Posted by Generro on 7th Nov 2020

    Went in easy, didn't leak and have peace of mind that the chain won't explore

  • 5
    Worked well

    Posted by Jean Fearnow on 9th Sep 2020

    What I ordered, came on time, worked great.

  • 4
    Chain Tensioner

    Posted by Vic Jocson on 28th Jul 2020

    Great product! Took the slack out of the worn out tensioner. I replace mine every 30k miles with regular oil changes and my R56 doesn’t have the issues most have