Harrop Airbox Infill Panel Suitable for all VF Holden Commodore & HSV. When fitting any OTR you obviously have to remove the factory airbox, however this does leave a rather nasty hole in the engine bay. Besides looking less than factory, it also leaves a big area open in your engine bay above your passenger side front wheel which exposes the bay to rocks and debris that can damage various components, not to mention the aesthetics. Harrop Engineering have solved this issue by manufacturing an OE style Infill Panel constructed from a durable high temperature ABS polymer. Easy to install with simple handtools in 10 minutes you can finish off the look of your engine bay. If you have an OTR intake system fitted to your pride and joy, put the finishing touch on with the OTR Infill Panel. Also available are the Harrop Engineering side Facia Panel kit designed to suit the Harrop OTR intake (see our other listing). Harrop Airbox Infill Panel suitable for all VE Holden Commodore & HSV. Compatible with all brands of OTR intake, including Harrop. No modifications to your car are required. Please note that as there is some minor variation in this engine bay area in VF Holden & HSV, these panels have been made oversized, so that the panel can then be trimmed down to suit each specific model. Panel will need to be trimmed back to suit your specific vehicle. Sit the panel in place, line up the fitting points and then measure out how much needs to be cut. Cutting can be done with a sharp utility knife etc.