This alternator is an aftermarket replacement for Honda Marine outboard engines and cross-references Honda OEM alternator assembly numbers 31630-ZY3-003 and 31630-ZY3-013. Supplied under Recmar reference REC31630-ZY3-003, it’s intended to restore correct charging performance when the correct match is confirmed.

Before ordering: confirm your engine model code (including suffix) and match the part number on the alternator currently fitted. Fitment can vary by version and serial number.

• Part: Alternator / alternator assembly
• Fits (supplier-listed): Honda BF175A / BF200A / BF250A variants (including suffix codes such as A3, A6, AK1–AK3, etc.)
• Common applications listed for these OEM refs: Honda BF175, BF200, BF225, BF250 outboards
• Cross-reference (OEM): Honda 31630-ZY3-003, 31630-ZY3-013
• Aftermarket reference: Recmar REC31630-ZY3-003
• Pulley: 6-groove
• Typical specification shown for this alternator family: 12V / 90A (verify against your existing unit)
• Related belt reference (supplier): REC31638-ZY3-003 (sold separately)
• Brand: Recmar (aftermarket replacement)

Fitment varies by engine version. Always match your engine model code and the part number stamped on your old alternator before purchase.