• Billet 6061 aluminum with blue printed and matched oil passages to the engine case passages
• Kidney shapes are designed to maximize flow
• Optimized oil flow to and from the oil pump
• Reduced oil and engine temps
• Tighter cam journal bore tolerance for improved cam fitment
• Added Cam journal oil groove for cold start up protection and increased cam journal lubrication
• Added oil pressure feed holes to front and back of cam journal to prevent excessive thrusting wear
• For use only with factory oil pumps
• Replaces OEM 25400133
Note: Use of gear drive camshafts require block off plate 8016.









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