ZEROSPORT Valve Spring Seat Set for the Nissan Tb48 Y61. Perfect fitment when those need to increase spring pressure over the factory shim. These seats are specially made to fit into the tight Nissan Tb48 Y61 Spring cup and reduce spring install height allowing for increased spring pressure. Please note that these will reduce spring install height and could cause coil bind if used with some high lift profiles.
- Sold as a set of 24.
- OD: 27.56mm / 1.085"
- ID: 18.4mm / 0.725"
- Thickness: 1.5mm / 0.060"