Ignition Power Pack CDI Unit Module Compatible with Yamaha 40HP 50HP 3-Cyl 2-Stroke Outboard 1984-1988 40ETLN 50ETLG 40EL 40ES 50ES 6H4 Prefix 6H4-85540-20-00 6H4-85540-21-00

YAMAHA 50HP 3-CYL 2-STROKE - 50ET 2.638 Bore (1986-1988): · 50ETLJ (1986) / 50ETLH (1987) / 50ETLG (1988) · All 50ET and 50ES tiller remote electric start variants YAMAHA 40HP 3-CYL 2-STROKE - 40ET/40EL 2.638 Bore (1984-1988): · 40ELN / 40ETN / 40ENN 3-Cyl 2-Stroke (1984) · 40ETLK (1985) / 40ETLJ (1986) / 40ETLH (1987) / 40ETLG (1988) · All 40EL 40ET 40ES tiller remote electric start variants OEM PART NUMBERS: · Yamaha: 6H4-85540-20-00 / 6H48554020-00 (original) · Yamaha: 6H4-85540-21-00 / 6H48554021-00 (supersedes -20) Ignition Power Pack - Yamaha 3-Cylinder 40HP 50HP 2-Stroke CDI Module: Complete 3-cylinder CDI ignition pack for 1984-1988 Yamaha 40HP and 1986-1988 Yamaha 50HP 2-stroke outboard engines with 2.638 bore and 6H4 model prefix. Capacitor discharge ignition module with sealed housing for dependable spark delivery and consistent engine performance in marine environments. ⚠️ IMPORTANT: Verify OEM part number on your existing CDI unit before ordering to ensure proper fitment. Does NOT fit 1989+ models using 6H5-85540-XX.