Replacement Part Numbers:31400426, 31400429, 1070227, 1070228, Wide Vehicle Compatibility: This is a complete left and right pair set of electronic parking brake (EPB) motors. Fits for 2016-2026 Volvo models including XC60 (2018-2026), XC90 (2016-2026), S60 (2019-2026), V60 (2019-2026), V60 Cross Country (2020-2026), S90 (2017-2026), V90 (2017-2026), V90 Cross Country (2017-2026), C40 (2022-2026), and Polestar 2 (2021-2026). Includes both left and right side motors to service both rear calipers simultaneously.Precision Electric Motor & Restored Functionality: Each motor features a durable electric motor and internal gear mechanism that delivers precise brake application and release. This pair set resolves common failing actuator symptoms including parking brake failure to engage or release, EPB warning light on dashboard, grinding noise from rear caliper area, and "Parking Brake Malfunction" error messages, restoring proper electronic parking brake operation for both rear wheels.Plug-and-Play Installation: Direct bolt-on replacement with factory electrical connectors. Installation requires removal of both rear brake caliper and actuator assemblies. IMPORTANT: Before installation, the parking brake MUST be placed into "Service Mode" or "Pad Replacement Mode" using a compatible diagnostic tool (e.g., VIDA, iCarsoft, or advanced OBD scanner). Failure to retract the EPB motors electronically may damage the new actuators or the caliper pistons.Quality Assured: Built with durable materials and rigorously tested to ensure reliable, long-lasting performance. Each motor weighs approximately 0.5 kg (1.1 lbs). If you encounter any issues during shopping or have questions about compatibility, please contact us promptly through Amazon Buyer-Seller Messaging.