Chrome Moly Steel retainers 1.080" OD, .735" ID (.060" Higher than 507-ST) ISK50 Product:For 5005, 6005, 6105, 6205, 8005-A, 8305, 9005, 9105, 9265 Valve Spri not plastic like stock or

not plastic like stock or starters sold at a local parts store

625 in (41 mm) Outside Length 9

7/8" Thread Length

Compression Ratio with 64cc chamber volume: 11

2016 BMW Z4 sDrive 35i 3

Chrome Moly Steel retainers 1.080" OD, .735" ID (.060" Higher than 507-ST) ISK50 Product:For 5005, 6005, 6105, 6205, 8005-A, 8305, 9005, 9105, 9265 Valve Spri not plastic like stock orChrome Moly Steel retainers 1. 080" OD, . 735" ID (. 060" Higher than 507 ST)For 5005, 6005, 6105, 6205, 8005 A, 8305, 9005, 9105, 9265 Valve Springs ISK507 STA K507 STA Isky 4130 Chrome Moly Light Weight Steel Valve Spring Retainers are ideal for street and highly stressed competition applications. They are specially heat treated and black oxide finished to protect against corrosion. Set of 16 4130 Chromemoly steel retainers.