Fits 2017+ R1200GS/GSA Liquid cooled with 40mm opening  MEASURE BEFORE YOU ORDER
Also fits BMW RT/R/S/1000/S1000XR and new keyless 40mm nozzle

Filter does not have an upper flange, instead it fits into the tapered neck of your fuel nozzle.
Neck diameter 41mm
Filter bag size 8×8″
Filter bag is centered on the nozzle

(Photo below may not represent your filler nozzle)

The special fuel neck prefilter is designed to be mounted inside the original fuel cap. To install simply open the lid, insert the filter in the hole, and you’re done!  Installation instructions here:  R12GS 17 +

It’s easy to insert and extract, no further modifications or mountings.

The HDM3D media filters down to 10 Microns, which will allow a very good protection of the fuel pump and main filter. WATER and other contaminants (liquid and solid) will be separated during refueling.

Some models may have a plastic adapter, simply pull it our of the neck and insert the filter.

Expedition media, XXL+ 1200 square cm of filtering surface, simply mounting and fast refueling, washable and long lasting.

The original BMW fuel filter system has a strainer working between 40 and 60 microns, made from nylon mesh, which is totally inadequate to protect the fuel pump.

This filtration level will both preserve the fuel pump and prolong fuel original filter life, thereby avoiding nasty surprises and high repair costs.

Double-check your bike’s make, model, year, gas tank design, filler nozzle, etc. before ordering. 
Take careful measurements of your filler nozzle and confirm for proper fitment. (see measurements of filter above).
If you order the wrong filter you’re responsible for any shipping fees needed to replace it with the proper filter, plus any price differences.
Filters that have been immersed in gas (or are not in like-new condition) are NOT eligible for return or refund.