YB Valve spring isky - Ford Cosworth YB (each)
 
Race duplex spring. For retainers use standard SC350 or VRT02 titanium.
Ford Cosworth YB 16v Turbo
Application:
Ford Sierra RS Cosworth 3 door 1986-1987
Ford Sierra Cosworth RS500 1987
Ford Sierra Sapphire RS Cosworth 2wd 1988-1989
Ford Sierra Sapphire RS Cosworth 4wd 1990-1992
Ford Escort RS Cosworth 4wd T34 1992-06/1994
Ford Escort RS Cosworth 4wd T25 06/1994-1996
 
YBVSISKY