Enginetech ER1807 Rocker Arms for Ford/Mazda 4.0L 1990-2000The Enginetech ER1807 Rocker Arms are high-quality replacement parts designed for precise fit and reliable performance in Ford and Mazda...
Single Exhaust Valve
Compatible with: Ford 2.9L 177 (Enginetech V2285)
Nominal Stem Diameter: 8.00 mm
ET Stem Diameter: 0.3153 inches
Standard Head Diameter: 1.417 inches
ET Head Diameter: 1.417...