0354731 Evinrude Johnson O-Ring | Genuine OEM BRP Outboard Part

🔧 Product Description

Genuine BRP Evinrude Johnson Driveshaft Bearing Housing O-Ring - Part Number: 0354731

A genuine BRP large gearcase O-ring used to seal the driveshaft bearing housing in selected Evinrude and Johnson lower units.

The O-ring prevents gear lubricant from escaping around the bearing housing and helps stop water from entering the gearcase.

⚙️ Key Features

• Genuine BRP OEM bearing-housing O-ring

• Correct OEM part number 0354731

• Common unprefixed number 354731

• Large-section gearcase sealing ring

• Used around the driveshaft bearing housing

• Suitable for selected twin-cylinder, three-cylinder, V4 and V6 lower units

• Sierra, EMP and Recmar alternatives available

🔄 Supersession & Cross Reference

OEM Supersession / Related Chain:

• 0314728

• 314728

• 0354731

• 354731

Aftermarket / Verified Equivalents:

• Sierra: 18-7130

• EMP: 25-00263-1

• Recmar: REC314728

• Generic gearcase O-ring replacing 0314728 / 0354731

Approximate aftermarket catalogue dimensions:

• Inside diameter: approximately 2-1/8 inches

• Outside diameter: approximately 2-5/16 inches

• Section thickness: approximately 3/32 inch

Dimension note:

• Dimensions are provided only as a cross-check.

• Select the seal by OEM number and bearing-housing application rather than by measurement alone.

🚤 Compatibility

Commonly used on selected:

• 40HP-60HP twin-cylinder and three-cylinder gearcases

• V4 outboard lower units

• V6 outboard lower units

• Standard-rotation gearcases

• Counter-rotation gearcases

• Selected 40HP-235HP two-stroke applications

• OMC Cobra, Stringer and King Cobra assemblies where the corresponding bearing-housing O-ring is specified

Important fitment note:

• Confirm the bearing-housing number and gearcase diagram.

• Do not confuse this O-ring with the propeller-shaft carrier O-ring or water-pump seals.

• Repeated O-ring failure may indicate bearing-housing corrosion or damage.

🔌 Function

The O-ring seals the outside diameter of the driveshaft bearing housing against the gearcase bore.

Common signs of failure:

• Gear lubricant leaks

• Gear oil becomes milky

• Water enters the lower unit

• Pressure or vacuum test fails

• O-ring is flattened

• Rubber becomes brittle

• Bearing-housing bore is corroded

• Internal gears and bearings show water damage

Installation considerations:

• Remove the bearing housing with the proper puller

• Inspect the housing and gearcase bore

• Clean the O-ring groove

• Lubricate the new O-ring with approved gearcase lubricant

• Do not twist or stretch it excessively

• Protect the O-ring from sharp housing edges

• Seat the bearing housing squarely

• Pressure- and vacuum-test the gearcase

• Refill with the specified gear lubricant

📦 Condition

• Genuine BRP Evinrude Johnson OEM part

• Brand new

• Supplied in genuine or equivalent protective packaging