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 thematerial 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.
 
 This is a complete kit of 24 valves total
 
3.0L I/L 6 Cyl - DOHC 24 Valve (B58 - Turbo)
Intake
Head Diameter: 30.60 mm
Stem Diameter: 4.97 mm
Overall Length: 99.15 mm
Tip Length: 4.50 mm
Reference: 19 Degree Super Flo. +.5 mm oversize. Triple Radial Groove
 
3.0L I/L 6 Cyl - DOHC 24 Valve (B58 - Turbo)
Intake
Head Diameter: 30.10 mm
Stem Diameter: 4.97 mm
Overall Length: 99.15 mm
Tip Length: 4.50 mm
Reference: 19 Degree Super Flo. Stock size. Triple Radial Groove
 
3.0L I/L 6 Cyl - DOHC 24 Valve (B58 - Turbo)
Exhaust
Head Diameter: 29.50 mm
Stem Diameter: 5.96 mm
Overall Length: 99.80 mm
Tip Length: 4.98 mm
Reference: 21 Taper Flo. +1 mm oversize. Triple Radial Groove. Super Alloy
 
3.0L I/L 6 Cyl - DOHC 24 Valve (B58 - Turbo)
Exhaust
Head Diameter: 28.50 mm
Stem Diameter: 5.96 mm
Overall Length: 99.80 mm
Tip Length: 4.98 mm
Reference: 21 Taper Flo. Stock size. Triple Radial Groove. Super Alloy