{"product_id":"acdelco-silver-rear-brake-rotor-for-gm-vehicles-18a2543a-gm-19255508-oem-fit-improved-heat-control","title":"ACDelco Silver Rear Brake Rotor for GM vehicles — 18A2543A \/ GM 19255508, OEM-fit, improved heat control","description":"\u003cp\u003e\u003cstrong\u003eACDelco Silver 18A2543A rear brake rotor is a direct-fit, OEM-backed replacement rotor engineered to improve heat management, reduce noise, and extend pad life for compatible GM vehicles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned and validated for select Buick, Chevrolet, GMC, and Saturn models, this ACDelco Silver rear rotor (GM part 19255508) delivers a combination of multi-alloy construction, targeted vane design, and a non-directional finishing process. It’s sold individually so you can replace one rotor at a time, and it’s intended for drivers who want a dependable, value-focused OEM-quality component to maintain braking performance and reduce service frequency.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this rotor handle heat and reduce brake fade?\u003c\/h3\u003e\n\u003cp\u003eThe rotor uses multi-alloy cast iron and a vane configuration tuned for the rear-axle application to improve airflow through the rotor. Better airflow lowers operating temperatures, which helps maintain consistent braking under repeated stops.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApplication-specific vane layout for improved coolant air circulation\u003c\/li\u003e\n  \u003cli\u003eMulti-alloy construction that balances thermal conductivity and strength\u003c\/li\u003e\n  \u003cli\u003eRounded radius edges to resist stress under high heat\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill the ACDelco Silver rotor help reduce noise and uneven wear?\u003c\/h3\u003e\n\u003cp\u003eYes—this rear rotor is finished non-directionally and balanced at the factory to minimize vibration and uneven pad contact. The smoother surface reduces thickness variation, which in turn helps brake pads wear more evenly and quietly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNon-directional ground finish to reduce NVH (noise, vibration, harshness)\u003c\/li\u003e\n  \u003cli\u003eSmoother contact area that lowers pad taper and uneven wear\u003c\/li\u003e\n  \u003cli\u003eBalanced design to limit rotor-induced vibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and fitment steps should I verify before buying?\u003c\/h3\u003e\n\u003cp\u003eThis rotor fits a range of GM rear-wheel applications across Buick, Chevrolet, GMC, and Saturn models—common fits include Chevrolet Traverse, GMC Acadia, Buick Enclave, and Saturn Outlook. Use your vehicle identification number (VIN) with the Confirmed Fit tool to ensure proper match and hub compatibility before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon models: Chevrolet Traverse, GMC Acadia, Buick Enclave, Saturn Outlook\u003c\/li\u003e\n  \u003cli\u003eSold individually—replace one or both according to inspection\u003c\/li\u003e\n  \u003cli\u003eVerify exact fit by entering your VIN in the Confirmed Fit tool\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance and pairing recommendations maximize rotor life?\u003c\/h3\u003e\n\u003cp\u003eFor the best long-term results, install new pads when replacing rotors, torque wheel fasteners to manufacturer specs, and inspect caliper function. Pairing this rotor with ACDelco rear brake pads creates a value-oriented brake kit with matched friction performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplace pads when rotors show wear or scoring\u003c\/li\u003e\n  \u003cli\u003eFollow OEM torque and bedding procedures after installation\u003c\/li\u003e\n  \u003cli\u003eConsider replacing both rear rotors together for uniform performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Drivers who own compatible GM SUVs and sedans and want an affordable, OEM-backed rear rotor that emphasizes cooling, quieter operation, and extended pad life. It’s a practical choice for routine service, single-side replacements, or when updating rear brake components to restore original braking feel without stepping up to premium or performance rotors.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the ACDelco 18A2543A rear rotor a direct replacement for GM 19255508?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. 18A2543A corresponds to GM 19255508 for compatible rear-axle applications, but verify fit with your VIN first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Should I replace brake pads when installing this rotor?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It’s recommended to replace or inspect pads; new pads help ensure even wear and optimal bedding with the new rotor.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ACDelco","offers":[{"title":"Default Title","offer_id":55171494248791,"sku":"B005QW93P0","price":107.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/acdelco-silver-rear-rotor-front-face.jpg?v=1790446862","url":"https:\/\/britishgarage.co.uk\/products\/acdelco-silver-rear-brake-rotor-for-gm-vehicles-18a2543a-gm-19255508-oem-fit-improved-heat-control","provider":"British Garage","version":"1.0","type":"link"}