Quinton hazell qh are the largest aftermarket manufacturer distributor of motor components in the uk with a strong presence in every market sector of the european aftermarket qh are also building an increasingly strong position as an oe component supplier to many of europes leading car manufacturers brand quinton hazell part knock sensor reference xks33 oen part numbers citroenpeugeot 5946 28 citron 5946 28 peugeot 5946 28