Part Number: 08673-67012 (Preamplifier assy)Part Number: 108242-0001 (Preamplifier assy)Part Number: 13220380 (Preamplifier assy)Part Number: 66107B (Preamplifier assy)Part Number: 87849-301 (Preamplifier assy)Part Number: 8803A (Preamplifier assy)