ENGINE SECTION RED PART NUMBERS INDICATE NEW PARTS 6-124 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 PERFORMANCE HEAD & BASE GASKET SETS FOR BIG TWIN & SPORTSTER EVOLUTION • Designed to eliminate sealing problems found in high compression engines. • Sets include .010” soft aluminum base gaskets, solid malleable copper head gaskets with thickness as listed and Viton O rings. Big Twin Evolution 1340cc, (3 1/2”) 1984/1999 Sportster Evolution 1200cc, (3 1/2”) 1988/Later Big Twin Evolution 3 5/8” Bore, 1984/1999 Part 60421 Part 60419 Part 60420 Part 60490 Part 60489 .043” Head Gasket .043” Head Gasket .043” Head Gasket .027” Head Gasket .032” Head Gasket Head & Base Gaskets
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