Ferrea 136.48mm / 25 Deg Flo / Trpl Groove +2mm Comp Plus Exhaust Valve | 2001-2004 Volkswagen Jetta / 2002-2004 Volkswagen Golf (F2137P)

Competition Plus Exhaust Valves by Ferrea

To manufacture the valves special aerospace quality alloys were used, 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. The goal was to achieve an optimum balance of flow, velocity and efficiency in the design of these valves. As a result, these valves incorporate smoother radiuses and unique undercuts. These exclusive features are what make the Ferrea Competition Plus Valves excel in performance and reliability!

The evolution in volumetric efficiency of today‚¬™s competition engines has increased the average engine EGT. These higher Exhaust Gas Temperatures decrease the longevity of the valves as well as creating higher levels of metallurgical fatigue. These increased stress loads create an environment in the engine conducive to valve failure.

The exhaust valves in the Competition Plus series are manufactured from Ultra High Strength, High Temp Nickel Stainless Steel Alloys. Ferrea first used this material with great success during the development of a very high stress, high temp endurance racing program.

Please Note: 6 long EXH valves, 6 short EXH valves

Features

• 2.8L - DOHC 24 Valve (BDF)
• Head Diameter: 29.00 mm
• Stem Diameter: 5.94 mm
• Overall Length: 136.48 mm
• Tip Length: 4.6 mm
• Reference: 25 Degree Flo. Triple Gro. Special Alloy. - 2 mm oversize
• Special aerospace quality alloys, including the EV8-Z18

Benefits

• Tensile strength increased by 20% at high temperature
• Fatigue resistance increased by 20%
• Valve seat life increased by 25%

Applications

• 2001-2004 Volkswagen Jetta
• 2002-2004 Volkswagen Golf

What's In The Box?

• 1 - Exhaust Valve

Warranty

• No Warranty