Ferrea Competition Plus Intake Valve Kit 33.95mm +1mm – BMW / M50 / M51 / M52 / M54 / S50

Actual part may differ from image above. 


M50-M54 & S50 engines contain 24 valves – 12 intake and 12 exhaust this Set contains 12 +1mm oversized intake valves.


Ferrea Competition Plus Valves have built a reputation as the industry’s most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8-Z18, which provides high tensile strength. An exclusive two-step slow forging process ensures proper grain flow and virtually eliminates any damage to the material structure. The valves are then heat-treated and stress-relieved over a 48-hour period, which is the crucial base of our molecular integrity. These valves feature avionics-quality hard chrome along with a specially applied hard tip.


– Valve Tip Length 3.7mm
– Stem Diameter 5.97mm
– Valve Length 106.1mm
– Valve Head Size 0.040″ / 1mm
– Valve Head Diameter 33.95mm
– Valve Type Intake
– Valve Stem Diameter 5.97mm
– Valve Material Stainless Steel, Super Alloy
– Valve Face Dish



Replaces OEM Part #  11-34-1-739-822 / 11 34 1 739 822 / 11341739822