Center Main Bearing Compatible With 1979-2006 Mercury 2-Cylinder 20 25 Hp 2.562 Bore Mercosil Block

PART NUMBERS:
• 86992A1 / 86992A2
• 86992A3 / 86992A5

SPECIFICATIONS:
• Component: Center Main Bearing
• Engine: 2-Cylinder 2-Stroke 2.562 Bore
• Horsepower: 15/18/20/25 HP
• Brand: Mercury / Mariner

APPLICATIONS:
• 18 HP (1979-1987)
• 2.562 Bore: 20/25 HP (1980-1994)
• 2.562 Bore Mercosil: 15/20/25 HP (1994-2006)
• Applicable Mariner models by part number

PRODUCT DETAILS:
Direct replacement center main bearing for Mercury and Mariner 2-cylinder outboard engines spanning 15 through 25 HP from 1979 through 2006. This bearing has four part numbers (86992A1, A2, A3, and A5) reflecting the multiple revisions during the nearly 30-year production run of these small Mercury 2-stroke outboard engines. Compatible with both the standard 2.562 bore 20 and 25 HP models and the later Mercosil block versions of the 15, 20, and 25 HP models, plus the earlier 18 HP variant. The center main bearing is positioned between the two cylinders and provides the primary support point for the crankshaft in these 2-cylinder powerheads. A failing center main bearing presents as engine noise, vibration, reduced power, or visible crankshaft play during engine inspection. Mercury's 2-cylinder outboard lineup was the backbone of their small engine range, with the 20 and 25 HP models being especially popular for pontoon boats, fishing skiffs, and sailboat auxiliaries. Manufactured to match specifications for reliable performance in Mercury and Mariner 2-cylinder outboard applications. Always confirm your model and part number before purchasing to verify fitment.

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