JIMS, pinion gear 54-77. Blue - 54-E77 B.T.(NU) (AVERAGE SIZE) 970748 The two-piece backing plate sandwiches

The two-piece backing plate sandwiches a foam filter element

Supplied here with cap in BLACK

590" lift valve spring kit installed

020" paper washer

JIMS, pinion gear 54-77. Blue - 54-E77 B.T.(NU) (AVERAGE SIZE) 970748 The two-piece backing plate sandwichesGear size over . 105" pins: 1. 4475 1. 447". Cam gear over . 105" pins: 2. 768 2. 7685". Made from the finest American aerospace quality tool steel. Precision machined to exact tolerances with no compromises. Note: Cam gear fitment is essential to quiet valve train operation. Too loose of a fit will result in a clicking noise, sometimes confused with lifter noise. A too tight fit will produce a whining sound and premature wear. Sizes are as follows: