[Vehicle Fitment]: Compatible with Pontiac Grand Prix GXP 2005 2006 2007 2008 5.3L Rear Driver and Passenger Side [OEM Part Number]: 18-B4954 89060369 18-B4955 89060370 [Stopping Power and Security]: Crafted with cutting-edge materials and technology, this brake caliper offers superior braking power and rapid response. It ensures swift and reliable deceleration under all driving conditions, substantially improving safety on the road. [Seamless Compatibility]: These brake calipers are meticulously designed using exact replicas of the original manufacturer molds tailored to various vehicle models, guaranteeing a precise fit. They can be effortlessly installed for swift replacements and enhancements, markedly boosting the vehicle's performance and the overall driving experience. [Thermal Resistance and Anti-Corrosion]: Constructed from premium aluminum alloy, this brake caliper incorporates a sophisticated cooling mechanism, ensuring consistent braking efficiency in temperatures varying from -40°C to 600°C. The exclusive coating offers outstanding protection against corrosion and oxidation, substantially prolonging the product's lifespan and safeguarding your driving security. The brake calipers have undergone rigorous international accreditations, such as ISO and TUV, and are manufactured to strict quality control standards to guarantee excellence. Brand Anpulsero Fiwriluvx Model Rear Disc Brake Caliper 18-B4954 18-B4955 Exterior Paint spraying process Position Rear Item Weight 12.74 pounds Manufacturer Anpulsero Fiwriluvx OEM Part Number 18-B4954 89060369, 18-B4955 89060370 Item model number 18-B4954 18-B4955 Product Dimensions 14.04 x 8.97 x 5.34 inches Manufacturer Part Number 18B4954 & 18B4955 Caliper-756