Crower 66915J-12 Features:

Complete set of 12 mechanical flat-tappet solid lifters for Ford 240-300 inline 6-cylinder engines Manufactured by Hylift/Johnson in the USA for Crower, part number 66915J-12 Precision-ground radius faces and specialized finishes support fast break-in and reliable operation Designed for solid flat-tappet camshaft applications and capable of 7,000+ rpm use

Solid Lifters Johnson For Ford 240-300 Inline 6, Mechanical Features:

• Complete 12-piece solid lifter set for Ford 240-300 inline 6-cylinder engines, mechanical flat tappet valvetrain design
• Precision-ground radius faces for fast break-in performance and consistent cam-to-lifter contact under sustained load
• Solid flat tappet valvetrain control for high-rpm operation up to 7,000+ RPM in demanding performance applications
• Specialized surface finish helps reduce premature lobe wear and supports reliable, trouble-free valvetrain operation
• Required with new flat tappet camshaft installs; recommended for use with zinc and phosphorus oil additive