Omix proudly offers replacement brake components for your Jeep that meet or exceed OE standards for quality so maintaining optimum braking performance has never been so easy This Brake Master Cylinder Repair Kit fits 41 - 45 MB GPW, 45 - 49 CJ2A, 48 - 53 CJ3A, 53 - 67 CJ3B, 50 - 52 M38, 52 - 71 M38A1, 55 - 66 CJ5 and 55 - 71 CJ6 models. The kit includes piston, spring, boot, locking wire, cup and seat. Replaces OE number 8126746