For enhanced strength and reliability

1998-1999 BMW 323is I6 (2

and S52 Single VANOS engines

The Subaru EJ engine is a series of four-stroke

and a “stopper” fold-over layer to prevent combustion seal failure

GSC Power-Division Valve Spring Kit, BMW S58 MLX For enhanced strength and reliabilityThe GSC Power Division Beehive Valve Spring Kit with Ti Retainer for the BMW S58 includes 24 titanium retainers (12 Intake and 12 Exhaust) and 24 beehive valve springs. The GSC beehive spring utilizes advanced material heat treatment methods for superior load loss capabilities. These springs have the highest level of spring load retention while still maintaining good fatigue throughout the life of the spring. Beehive springs allow for the use of a