The Standard Motor Products RY 517 SI Ignition Relay is engineered to meet the specific electrical demands of various Cadillac and Buick models including the 2003 2007 Cadillac CTS 2005 2007 Cadillac STS 2004 2007 Cadillac SRX and 2008 2011 Buick Lucerne This relay ensures the reliable operation of critical ignitiond fuel systems contributing to optimal engine performance and vehicle reliability Constructed with high quality composite housings the RY 517 SI relay is designed to withstand harsh temperatures and demanding under hood conditions ensuring lasting durability Manufactured in facilities certified to TS16949 and ISO9001 standards this relay meets stringent industry requirements reflecting Standard Motor Products commitment to quality The relay features brass or copper contacts where specified enhancing wear resistance and ensuring consistent performance even in high stress applications As a global manufacturer of original equipment ignition products Standard Motor Products maintains complete quality control throughout the manufacturing process from componentry to finished product ensuring that each relay meets the highest standards of reliability and performance By integrating the RY 517 SI Ignition Relay into your vehicle s electrical system you can expect improved operational efficiency and reduced downtime leading to enhanced overall vehicle performance and reliability