OS Giken 2016+ Mazda Miata MX-5 (ND) Expanded Capacity Rear Differential Cover

Differential covers protect the ring gear, bearing caps, and gear oil inside your axle housing. Upgrading from a factory stamped-steel cover to a cast iron, billet aluminum, or fabricated steel unit adds extra fluid capacity for better cooling and provides significantly more impact protection on trails and tracks.Popular Diff Cover UpgradesTop sellers include Dana 44 and Dana 60 covers from Yukon Gear and ARB, deep-sump covers for GM 8.5-inch and 10.5-inch axles, high-clearance covers for Jeep JL and JK axles, and aFe Power COVER axle covers for Ford F-150, Ram, and GM truck platforms. Many billet covers add fill-plug temperature ports for monitoring fluid temps under tow.Do aftermarket diff covers actually help?A thicker-walled cover increases gear oil capacity by one to two quarts on most axles, reducing operating temperature under sustained load like towing or trail driving. Reinforced covers also resist rock strikes that would crack or bend a stock stamped unit, keeping your dif...

Shop differentials and components at Black Ops Auto Works for premium differentials, differential covers, differential gears, locker differentials, limited-slip differentials, install kits, rebuild kits, bushings, seals, yokes, spider gears, and final drive components for cars, trucks, SUVs, and off-road builds. Whether you are upgrading for better traction, stronger power delivery, improved durability, or drivetrain reliability, this collection includes the parts needed for street, towing, racing, and off-road applications. Shop Differentials & Components by Category Browse drivetrain and axle upgrades across popular product categories, including: Differentials Differential covers Differential cover gaskets Differential rebuild kits Differential install kits Differential overhaul kits Differential seal kits Differential bushings Differential mounts Differential braces Differential housings Differential dropouts Differential spider gears Differential yokes Final drive gears Wh...

Shop drivetrain parts and accessories at Black Ops Auto Works for differentials, axles, driveshafts, clutch kits, flywheels, flexplates, shifters, transmission components, ring and pinion gears, differential braces, differential bushings, wheel hubs, wheel bearings, U-joints, valve bodies, transmission coolers, drivetrain mounts, and performance driveline upgrades. This collection is built for street cars, drag cars, track builds, trucks, Jeeps, SUVs, high-horsepower Mopar builds, imports, European performance vehicles, and off-road applications that need stronger power delivery, durability, and reliability. Use this Drivetrain collection to find the right upgrade by vehicle platform, drivetrain layout, transmission type, power level, and product category. Differentials and ring and pinion gears support traction and gearing changes, axles and driveshafts help transfer power, clutch kits and flywheels improve manual transmission performance, transmission coolers and valve bodies supp...

Welcome to the OS Giken collection, where passion for performance meets unparalleled craftsmanship. Founded by Masaharu Okazaki in the early 1970s, OS Giken has become synonymous with high-performance Japanese race engines, striving to compete with the finest European offerings. Our Journey Starting in the early 1960s, Masaharu Okazaki embarked on a mission driven by his love for motorsports and a deep understanding of mechanical design. His journey began with: Tinkering with motorcycle parts in his garage. Self-education through disassembly and redesign of components. A focus on strength, durability, and high performance.   About OS Giken Officially established in 1973 in Okayama, Japan, OS Giken has earned a reputation as a premier manufacturer of racing drivetrain parts. Our commitment includes: 100% Made in Japan: All OS Giken parts are meticulously manufactured and assembled in Japan. Strict Quality Control: We adhere to rigorous quality-control guidelines throughout the p...