The ZERONINE DESIGNfill plug is an easy-to-install billet aluminium option to match our magnetic drain plug for Mk3 Focus RS owners wanting to service the oil of their Rear Drive Unit (RDU).
Another great product every vehicle I’ve owned. I’ve always had the O9 design plugs from the magnetic sump plugs to the magnetic gearbox plugs and I wouldn’t have it any other way to now having the full set in the rs
![09D RDU Fill Plug [Focus RS Mk3]](http://09design.com/cdn/shop/files/FTR014AA-RSDiffFillPlug-Front_2048x.jpg?v=1750697687)
