Omix proudly offers high-quality replacement brake components for your Willys/Jeep that meet or exceed OE standards so maintaining optimum braking performance has never been so easy! This replacement brake fitting washer serves as an inner crush washer between the brass outlet fitting and the master cylinder on 41-45 MB/GPW, 46-49 CJ2A, 49-53 CJ3A, 53-64 CJ3B,55-66 CJ5, 50-52 M38, 52-66 M38A1, 46-64 Truck, 46-64 Station Wagon and 48-51 Jeepster models. Replaces OE 637604