Irmscher pedal sets are manufactured to the exact size and shape of the original pedals for the specific vehicles in the Vauxhall / Opel range such as Astra, Corsa and Zafira. For a secure fit, the original pedals need to be drilled. Irmscher part# i9517642 for Vectra-B, this was one of the first mods done to my Vectra.
The Irmscher pedal set is supplied with nuts, bolts, washers. The original rubber pedal covers are left on, the alloy pedal fitted over them. Offer up the Irmscher pedal cover and mark the bolt holes, then drill these out with a nice sharp 4mm bit.
Tip
Cover the full footwell carpet with something before drilling, the metal filings can be a little stubborn to vacuum up. Once drilled, the holes at the back of the pedal can be very sharp … be careful.
With all the holes drilled each cover is fitted using the nuts, bolts and washers.