Andrews, Big Twin cam gear. Undersize (black) - 48-65 Panhead; 66-E77 Shovelhead (NU) 3150 Smoked glass lens

Smoked glass lens

875") fits 88" to 95"(1550cc) big bore conversions and is standard size for 103" OEM H-D engines

Features patented Big Sucker™ "hidden breather" technology and a forward facing 65° intake design that produces the highest air flow performance

The trick rear plate allows you to install the cover in horizontal or vertical position

Intermixing different brands may cause premature failure

Andrews, Big Twin cam gear. Undersize (black) - 48-65 Panhead; 66-E77 Shovelhead (NU) 3150 Smoked glass lensBlack, undersize. Crimp on installation on the camshaft. Used to correct backlash (free play) between the cam gear (on the cam) and the pinion gear (the smaller drive gear). Too much backlash will result in clicking, not enough backlash will result in a 'whining' sound. To correct backlash you can either use smaller or larger pinion gears or smaller or larger Andrews cam gears. Note: See 503768 (. 108") and 503769 (. 105") cam gauge pins to measure