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The Cusco rear differential cover increases fluid capacity and adds protection for Subaru Impreza WRX STI rear differentials with the R180 end, finished in blue. It’s engineered to provide additional oil volume for improved thermal control and durability under demanding driving. The heavier-duty cover also serves as a robust replacement for the factory unit while matching Subaru fitment.
Cusco Rear Differential Cover Blue Increased Capacity Subaru Impreza WRX STi (R180 End)
