Crower 66263-12 Features:

Severe-duty mechanical roller lifters for Holden inline 6-cylinder engines with a .842 in. lifter diameter. One-piece CNC-machined billet alloy bodies are heat-treated for wear resistance and reduced valvetrain weight. Designed for high-cylinder-pressure, high-rpm racing applications with 750 to 900 lb valve spring capacity. EDM oiling meters lubrication from the oil band to the needle bearings and pin for improved cycle life.

Roller Lifters Holden Inl .842 In. Severe-duty Mechanical Cutaway Features:

• Severe-duty cutaway mechanical lifters for Holden inline 6-cylinder racing engines, built for high-cylinder-pressure stability
• 0.842 in. diameter, one-piece CNC-machined billet alloy bodies, heat-treated for wear resistance and reduced valvetrain weight
• Control-contoured tapered needle bearings with EDM-metered oiling to the bearings and pin for improved high-load cycle life
• Raised heavy-duty blades with premium stainless steel captive blade construction and orbit-formed locks, no snap rings
• Handles 750 to 900 lb valve spring pressure for high-rpm performance, axle trueness, tappet alignment, and valvetrain control