Upper Main Bearing Compatible With Mercury 30 40 50 55 60 Hp 2-Cyl 3-Cyl Outboard Motor Jet 30 40 45

PART NUMBERS:
• 31-818889A1 31818889A1

ITEM SPECIFICATIONS:
• Component: Upper Main Bearing
• Engine: 2-Cyl / 3-Cyl / 4-Cyl
• Horsepower: 30-60 HP
• Brand: Mercury / Mariner

COMPATIBLE MODELS:
• 2-Cyl 2.992 Bore: 30/40 HP (1994-2007)
• 3-Cyl 2.992 Bore: 50/55/60 HP (1998-2014)
• 3-Cyl: 40 HP (1998-2005), Bigfoot 60 (1997-2004)
• 3-Cyl Jet: 30/40/45 HP (1997-2005)
• 4-Cyl 4-Stroke: 60 HP (2014)
• Applicable Mariner models by part number

PRODUCT DETAILS:
Direct replacement upper main bearing for Mercury and Mariner outboard engines covering 30 through 60 HP models in 2-cylinder, 3-cylinder, and 4-cylinder configurations produced between 1994 and 2014. This bearing fits a wide range of Mercury outboard models including the popular 50 HP 3-cylinder which had the longest production run in this family from 1998 through 2014. Compatible with both conventional and Bigfoot lower unit configurations as well as jet drive variants of the 30, 40, and 45 HP models for shallow water applications. The Mercury 2.992 bore engine platform was used across multiple horsepower ratings in both 2-cylinder and 3-cylinder configurations, with this bearing common to all variants. The upper main bearing supports the crankshaft at the top of the powerhead and proper bearing condition is essential for maintaining crankshaft alignment and engine reliability. Manufactured to match specifications for reliable performance in Mercury and Mariner outboard powerhead applications. Always confirm your model and part number before purchasing to verify proper fitment for your outboard motor.

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov