Racing Head Service (RHS) 1631-16 Features: Cast 8650 Chromemoly Steel Body Arched Web-Like Design Increase Strength And Rigidity CAD/FEA Design Black Oxide Exterior Helps Prevent Corrosion Increased Retainer/Spring Clearance Lifetime Guarantee On The Rocker Body Height: 13.00 Width: 4.00 Length: 3.75 Weight: 8.86 lbs Vehicle Type: Racing Head Service (RHS) 1631-16 Ultra Pro Magnum Rocker Arms Fitment: 2001/Mercury/Mountaineer/Base Sport Utility 4-Door/5.0L 302Cu. In. V8 GAS OHV Naturally Aspirated::N/ A^^2001/Ford/Explorer/XLT Sport Utility 4-Door/5.0L 302Cu. In. V8 GAS OHV Naturally Aspirated::N/ A^^2001/Ford/Explorer/XLS Sport Utility 4-Door/5.0L 302Cu. In. V8 GAS OHV Naturally Aspirated::N/ A^^2001/Ford/Explorer/Limited Sport Utility 4-Door/5.0L 302Cu. In. V8 GAS OHV Naturally Aspirated::N/ A^^2001/Ford/Explorer/Eddie Bauer Spor...