Jenvey Vauxhall 2.0XE 93x51mm Machined 50DP Carbon Airbox BackplateJenvey Dynamics 50 mm Deep Carbon Fibre Airbox Back Plate Machined with 93mm Centres x 51mm Bore for Vauxhall 2 Litre Engine. This Airbox Backplate creates more room for Fuel Rail and Throttle Linkages. This also can use a slimmer Air Filter. With this Airbox using 90 mm Air Horns we use a 90 mm Deep Filter which in most applications is much easier removed and fitted when in place. Specifications Engine Vauxhall 2. 0XE Bore Diameter 51 mm Centres 93