New power brake booster in 8.5" diameter. This booster is a stock replacement for late 1973-78 Datsun 240Z, 260Z and 280Z. Includes clevis and aluminum adaptor plate. The early 70-72 240Z used a 7" booster with a different bolt pattern, so this is not a direct replacement for the 240Z. If your brake pedal requires lots of leg pressure to stop the car, you might need a new power booster. No core required.
*Early 240Z uses a different bolt pattern to mount the booster, so this booster will only work on 1973-78.