DISA Valve Replacement Kit for BMW M54 Engines

DISA Valve Replacement Kit for BMW M54 Engines Specifications The original DISA valve (Differential Intake System Adjuster Valve) of the BMW M54 engine is made of plastic and is a well-known weak point. Over time it can crack or break causing air leaks and loss of performance. The S4RK kit made of CNC-machined forged aluminum is designed to eliminate this issue and provide a durable solution even under intensive use or on turbocharged/supercharged engines. Fully "bolt on" it fits in place of the original part preserving the factory appearance of the engine bay.