Brand: Allstar Performance Manufacturer's Part Number: ALL90052 Part Type: Camshaft Thrust Buttons Product Line: Allstar Performance Cam Button Spacers Automotive Fittings Part Number: AAF-ALL90052 UPC: 848238042351 Camshaft Button Style: Solid Camshaft Button Length (in.): 0.810 in. Camshaft Button Material: Aluminum Quantity: Sold individually. Notes: Fits later Chevy with indented cover. Description: Engines without a cam thrust plate must have a cam button spacer, and Allstar Performance has just what you need! The cam button spacers are installed to limit the lateral movement of camshafts in engines without the cam thrust plates. The needle bearing buttons are designed to reduce friction for "free" horsepower. Allstar Performance offers solid and roller cam button styles to suit your specific application needs. Either style is extremely useful for maintaining accuracy in any cam installation. In some cases, the machining of the cam sprocket may be required to ensure a proper install.