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 sensor throttle position reference xpot408 citroen xantia 2 0 i 1998 2003 121hp 1998cc citroen xantia estate 2 0 i 1995 1998 121hp 1998cc c