Feeler gauge kit All Four Valve Twins

Feeler gauge kit All Four Valve Twins

Part No. 21540-000
5 / 5
5 5< 8
Price: €9.90
Incl. 19% VAT, Excl. shipping

Any additional products shown in this image are not included in the scope of delivery.

In our view, these feeler gauges are the best and most accurate for adjusting the valves on your four valve boxer. When adjusting the valves, it’s very important to use two feeler gauges.

If you were to adjust one valve at a time, the small amount of play that exists in the rocker arm bearings will make it nearly impossible to get an accurate and consistent adjustment on both valves. The trick is to have two feeler gauges, one for each valve. You’ll be able to evenly match the drag that you feel on each set of valves.

These feeler gauges are the perfect length and each one features a grippy plastic handle that provides the feedback needed for an accurate valve adjustment, even with oily hands. We supply a kit consisting of two 0.15mm gauges for the intake valves and two 0.30mm gauges for the exhaust valves. They are color coded for easy identification.

Professional quality tools, made in Germany, that will last a lifetime.


Fantastic Tool
By Jimbob, posted on 9 June 2019
So light and easy to carry around, great finish quality and perfect to use. Would highly recommend to anyone
Great Product
By Eddie Schulz, posted on 29 March 2013
on my second GS and wanting to rotate between myself and the dealer doing the repairs.. this is a must have product that is very well made..
feeler gauges
By macadamia, posted on 13 March 2012
These made quick work of my valve adjustment. I recommend buying them if you do not already have a set of feeler gauges
By Matt, posted on 19 October 2011
Just did my first adjustment with these and worked like a charm! Used a friend's set, but also have set of my own now. He tied his to a 4' length of string in pairs (1 intake & 1 exhaust per string). That lets you drape the string over the bars so if you get one loose and the gauge falls, it doesn't hit the floor...also keeps them from getting lost!
BMW Feeler Gauges - excellent
By Nick B., posted on 27 June 2011
While on face value they seem a little pricey, they are worth their weight in gold when it actually comes to adjusting your valve clearances. Each rocker arm operates two valves and so has two adjusters, it is much easier to set accurately with these gauges, (two of each size). The gauges, because of the molded handle, will sit in the clearance for both valves while you adjust each in turn.I've adjusted a lot of valve clearances over the years on many different vehicles, but had read this was a tricky procedure on the BMW's with the gap on one valve altering as you adjust the other etc. With these feeler gauges I found the job as straightforward as any other valve adjustment I'd done.Wunderlich's shipping was ultra fast too - very impressed
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