ECOGARD XF65618 Engine Fuel Filter - Premium Replacement Fits Cadillac CTS, SRX, STS COMPATIBILITY with 2004-2009 Cadillac CTS, 2004-2009 Cadillac SRX, 2005-2011 Cadillac STS. PROTECT YOUR ENGINE against damage by preventing foreign particles from reaching the fuel injector or carburetor. Constructed with a multi-layered material that has optimum filtering efficiency. IMPROVE ENGINE PERFORMANCE with ECOGARD Fuel Filters. A clogged or dirty gas filter can result in difficulty starting, hesitation upon accelerating, decreased fuel economy, and rough idling. PRECISE INLET/OUTLET CONNECTIONS for trouble-free installation. SPECIFICALLY ENGINEERED AND TESTED for original equipment fuel filters fit, form, and function. Meets the requirements for maintaining new vehicle warranties. Replaces: Purolator F65618 WIX 33889 OE 25763176.