Crankshaft Upper Main Bearing Compatible With Mercury Racing 2.5L V6 2-Stroke Outboard 280 Efi 280

REPLACES PART NUMBERS:
• 30-849819 (30849819)
• 848280
• 849819

ITEM SPECIFICATIONS:
• Component: Crankshaft Upper Main Ball Bearing
• Position: Upper Crankshaft
• Engine: 2.5L V6 2-Stroke
• Brand: Mercury Racing

COMPATIBLE MODELS:
• Mercury Racing 280 EFI
• Mercury Racing 280 ROS
• Mercury Racing 300 Drag
• Mercury Racing S3000

PRODUCT DETAILS:
Direct replacement upper main crankshaft bearing for Mercury Racing 2.5L V6 2-stroke outboard engines used in competitive racing and high-performance marine applications. This precision ball bearing fits the upper crankshaft position on the 280 EFI, 280 ROS, 300 Drag, and S3000 Mercury Racing powerheads where it provides critical support for the crankshaft assembly. Mercury Racing 2-stroke V6 engines are purpose-built for maximum performance and operate at extreme RPM levels that place tremendous stress on the crankshaft bearing surfaces. The upper main bearing is one of the most critical components in the powerhead assembly, as crankshaft alignment and bearing condition directly affect engine reliability and power output. Replacing crankshaft bearings during powerhead rebuilds is essential to maintain the tight tolerances required for these high-performance racing engines to operate at peak efficiency. Manufactured to match specifications using high-quality bearing materials designed to withstand the extreme loads and RPM levels of Mercury Racing competition outboard engines. Always confirm your model and part number before purchasing to verify proper fitment for your Mercury Racing powerhead.

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