ENGINE SECTION RED PART NUMBERS INDICATE NEW PARTS 6-120 1 2 3 4 5 6 7 8 9 10 11 CONTENTS REFERENCE GENERAL EXHAUST FUEL DRIVE TRAIN ENGINE WHEEL CONTROL FRONT END FRAME ELECTRICAL Rocker Arm Cover & Base Gaskets EST ROCKER ARM COVER GASKETS FOR ALL EVOLUTION MODELS • Extreme Sealing Technology (EST) gaskets are Nitrile Bunadine Rubber (NBR) coated embossed steel and will not extrude out like the OEM paper gaskets. • Available in the .010” thick OEM size or .020” thick size for those difficult sealing jobs. The .010” gaskets have a .001” coating of NBR on each side and the .020” gaskets have a .005” coating of NBR on each side. One Piece Thickness Left Right Sold as Set .010” 60442C 60439C –– .020” 60443C 60440C 62629 (Rpls. HD 16779-84A left & 16778-84A right) Fits Big Twin Evolution 1984/1999 & Sportster Evolution 1986/Later Left Right One Piece EST ROCKER ARM COVER GASKET & SEAL SETS FOR BIG TWIN EVOLUTION • Features one piece Lower Rocker Cover Gaskets made from stainless spring steel with a nitrile bunadine rubber coating on both sides. • Includes rubber middle & upper gaskets. • See page 6-127 for Pushrod Seals. 64027 Fits Panhead 1948/1965, Shovelhead 1966/1984 BIG BORE BASE GASKETS FOR PANHEAD & SHOVELHEAD CYLINDERS Part 60488 • .020” thick. • Embossed for extreme sealing. • 3 5/8” (3.625) bore size. • Sold in pairs. Model & Year Rpls. HD Part # Big Twin Evolution 1984/1991 –– 64028 Big Twin Evolution 1992/1999 17042-92A 64027
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