Ford Performance M-4216-A200 Differential Ring Gear Bolt Kit

7/16-20 - Sold In Packs Of 100 Most Popular 9 in. Ring Gear Bolt For Use on Detroit Lockers Spools/Open Differentials Bolt Threads Are Coated w/Threadlocker Sold In Pkg. Of 100 Made in the USA Ford Performance Parts - Differential Ring Gear Bolt Kit P/N M-4216-A200: These Ford Racing ring gear bolts are just what you need when replacing or upgrading your ring gears. Don't use that old, unreliable hardware when you can replace it with new. These bolts can also be used for automatic transmission flywheels.