This 12V starter motor is a Recmar aftermarket replacement for MerCruiser/Cummins diesel applications using OEM starter references 3916854 and 3904445 (also listed in some MerCruiser catalogs as 805991 / 50-805991). Designed with a 10-tooth pinion for correct ring gear engagement, it’s intended to restore reliable starting performance when the correct match is confirmed.

Before ordering: confirm the part number on your existing starter and verify fitment by engine model, rotation and tooth count. Fitment can vary by engine version and installation.

• Part: Starter Motor
• Voltage: 12V
• Pinion teeth: 10T
• Rotation: Clockwise (CW) (as listed by common marine catalogs)
• Primary OEM cross-references: Cummins 3916854, 3904445; MerCruiser 805991 / 50-805991
• Typical applications (confirm by engine & existing part number): Cummins B-Series marine diesels including 3.9L (4B/4BT) and 5.9L (6B/6BT/6BTA), plus select MerCruiser diesel packages using these engines
• Aftermarket brand: Recmar (Recambios Marinos)
• SKU: REC3916854

Note: Some catalogs also reference equivalent numbers such as Delco Remy 1113276 / 1113593. Always match by the OEM number on your starter (and your engine serial/model) to ensure correct compatibility.