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Performance Upgrades - Maintenance - Modifications - Problem Solving - Off-Road - Street Trucks. Covering the Explorer, ST, Sport, Lincoln Aviator, Sport Trac, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Aerostar. Featuring H.I. - Human Intelligence.
Sealed power...but typically your stock ones can be cleaned unless they have broken springs they should be fine..its typically the push rods and the rockers that go bad..plus to do lifters the heads have to come off