0307551 Evinrude Johnson Drain fill Plug | Genuine OEM BRP Outboard Part

🔧 Product Description

Genuine BRP Lower-Unit Drain and Fill Plug - Part Number: 0307551

A genuine BRP threaded drain and fill plug used in selected Evinrude, Johnson and OMC lower gearcases.

The plug is removed when draining or refilling the lower-unit gear lubricant. A new sealing washer should be installed whenever the plug is removed to help prevent lubricant loss and water entry.

⚙️ Key Features

• Genuine BRP OEM gearcase drain and fill plug

• Correct OMC part number 0307551

• Used for lower-unit lubricant draining and filling

• Cross-references with later OMC and BRP plug numbers

• Compatible with Sierra, Mallory, GLM and SEI replacements

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 0982851 later OMC / BRP drain-plug service reference

• 0912625 later OMC drain-plug reference

• 0307551 original OMC drain and fill plug reference

OEM / Related Numbers:

• 0307551

• 307551

• 0912625

• 912625

• 0982851

• 982851

• Drain-plug washer: 0311598

• Drain-plug washer: 311598

• BRP service reference: 0777602

• 777602

Aftermarket / Verified Equivalents:

• Sierra: 18-2387

• Sierra: 18-2387-9

• Sierra: 18-4255

• Mallory: 9-72655

• GLM: 22420

• SEI Marine: 98-360-35K

🚤 Compatibility

Commonly used on:

• Evinrude and Johnson lower gearcases

• OMC outboard and V6 lower-unit lubricant housings

• Gearcases using drain plug 0307551, 0912625 or 0982851

Typically suits:

• Engine models:

• Evinrude / Johnson 8HP outboards

• Evinrude / Johnson 9.9HP outboards

• Evinrude / Johnson 10HP outboards

• Evinrude / Johnson 15HP outboards

• Evinrude / Johnson 20HP through 70HP gearcases using the same threaded plug

• Evinrude / Johnson 75HP through 115HP gearcases using 0307551

• Selected OMC V6 outboard gearcases specifying 0307551, 0912625 or 0982851

• HP Range: Documented 8HP - 115HP, plus selected V6 gearcases

• Engine Type: Evinrude / Johnson / OMC outboard lower unit

• Year Range: Model and gearcase controlled

🔌 Function

The plug closes the lower-unit lubricant drain or fill passage. Together with its sealing washer, it keeps gear lubricant inside the housing and prevents water entering through the threaded opening.

Common signs of failure:

• Gear lubricant leaking around the plug

• Milky or water-contaminated lubricant

• Damaged screwdriver slot or rounded plug head

• Stripped, corroded or damaged threads

• Missing or flattened sealing washer

• Gearcase fails pressure or vacuum testing at the plug

📦 Condition

• Genuine BRP part

• Brand new

• Supplied in original or equivalent packaging