Part Number M911JF Brake Backing Plate Key benefits Restores proper brake component alignment to maintain reliable brake operation. Fits multiple ring gear sizes for flexible use: 9.5 inch, 10.5 inch, or 11.5 inch. 100 percent in original factory packaging, never used or installed, for predictable fit and performance. What it does Serves as the mounting and support surface for brake shoes, springs, wheel cylinder, and related hardware. Provides correct geometry for brake components so they operate as intended and wear evenly. Important attributes Part number: M911JF. Product type: Brake backing plate. Ring gear compatibility: 9.5 in., 10.5 in., or 11.5 in. ring gear. Condition: 100 percent in original factory packaging, unused. Installation: Designed to accept standard brake hardware and to position components accurately for service or replacement. Fitment and compatibility Please check the fitment filter and product description to confirm this item will work on your vehicle before . Verify backing plate bolt pattern and ring gear size against the vehicle axle to ensure proper fit. Typical applications Replacement of a worn or damaged backing plate during a brake service or axle rebuild. Restoring braking components during a vehicle maintenance project or axle swap that requires one of the listed ring gear sizes. Keeping a correct spare part on hand for roadside or fleet maintenance to reduce vehicle downtime. Why choose this part Exact part number identification and condition reduce uncertainty during repairs. Clear ring gear size options make it straightforward to match to the axle specification. Simple, direct replacement designed to accept original style brake components for a straightforward installation. Installation tip Inspect mating surfaces and fasteners, confirm bolt pattern and ring gear diameter, and worn hardware as needed for a complete service.