BMW M40 / M42 / M43 / M44 Valve Kit by Ferrea

The Ferrea Competition Plus Valves are highly regarded as one of the most reliable extreme duty valve kits in the industry. Specifically designed for the classic BMW M40, M42, M43, and M44 engines, these valves are crafted with performance in mind, using aerospace-grade alloys such as EV8-Z18 for maximum tensile strength.

Ferrea’s unique two-step slow forging process ensures superior grain flow, enhancing the structural integrity of each valve. A 48-hour heat treatment and stress-relieving procedure ensures the molecular integrity of the valves, allowing them to withstand the intense demands of high-performance use. Finished with avionics-quality hard chrome plating and featuring a specially hardened tip, these valves are manufactured to perform under the toughest conditions.

Upgrade your BMW M40, M42, M43, or M44 engine with the Ferrea Valve Kit and experience increased durability, improved heat resistance, and enhanced performance—ideal for everything from high-performance street builds to motorsport use.

Key Benefits:

• Aerospace-grade alloy construction for unmatched strength and reliability.
• Slow forging process for optimized grain flow and durability.
• Avionics-quality hard chrome plating for superior heat resistance.

Factory valve size is 6 mm, with 33 mm intake valves and 30.5 mm exhaust valves. These Ferrea valves feature a triple groove valve design and are compatible with the factory valve locks (AKA valve keepers).

Kit Contents:

• (8) Intake valves
• (8) Exhaust valves

BMW M40 Applications:

3 Series

1987-1994     E30     316i / 318i
1991-1993     E36     316i / 318i / 318is

5 Series

1988-1992     E34     518i

BMW M42 Applications:

3 Series

1989-1991     E30     318i / 318is
1992-1996     E36     318i / 318is

BMW M43 Applications:

3 Series

1993-1998     E36     316i / 318i / 318is
1998-2001     E46     316i / 318i

5 Series

1994-1996     E34     518i
1995-2000     E39     518i

Z Series

1995-1999     E36/7     Z3 1.8i
1999-2000     E36/7     Z3 1.9i

BMW M44 Applications:

3 Series

1996-1999     E36     318i / 318is

Z Series

1996-1999     E36/7     Z3 1.9i