Drive Shaft Bushing – Fits Yamaha 5HP 8HP Outboard Motors (Replaces 647-45316-09)

$20.00 $32.00

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Drive Shaft Bushing – Fits Yamaha 5HP 8HP Outboard Motors (Replaces 647-45316-09) is backordered and will ship as soon as it is back in stock.

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Product Details

This aftermarket Drive Shaft Bushing is designed for Yamaha 5 HP and 8 HP outboard motors (2-stroke and 4-stroke models) from 1984 to the present. It serves as a crucial component for supporting the drive shaft, ensuring smooth rotation and reducing friction within the lower unit housing.

It is a direct replacement for Yamaha OEM part numbers 647-45316-09 and 647-45316-00.

Engineered for a secure press-fit installation.
Constructed from corrosion-resistant, marine-grade aluminum alloy.
Features a friction-reducing surface for enhanced durability.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number
Yamaha	647-45316-09
Yamaha	647-45316-00

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This part is designed for select Yamaha outboard engines. Verify your model is listed and that the OEM part number matches.

Brand	Model	Rated HP	Stroke	OEM Part No.
Yamaha	E8D	8	2-Stroke	647-45316-09
Yamaha	E8DMH	8	2-Stroke	647-45316-09
Yamaha	5HP Models	5	2-Stroke & 4-Stroke	647-45316-09
Yamaha	8HP Models	8	2-Stroke & 4-Stroke	647-45316-09

Technical Specs

Product Type: Drive Shaft Bushing
Housing Material: Marine-grade Aluminum Alloy
Installation: Press-fit
Dimensions (H x W x L): 2.0 x 9.5 x 8.5
Weight: 20.5g (0.72 oz)
Fuel Type: Gasoline
Other Attributes: Corrosion-resistant, Friction-reducing surface
Warranty: 1 Year (Aftermarket)

What’s in the Box

1 x Bushing, Drive Shaft (647-45316-09)

Installation Notes

Ensure the engine is off, cool, and disconnected from the power source before starting.
Access the lower unit of the outboard motor. This may require removing the lower casing.
Carefully remove the old, worn drive shaft bushing. As this is a press-fit part, a bushing puller or a press may be necessary.
Thoroughly clean the housing seat to remove any corrosion, salt, or debris.
Align the new bushing and use a press or appropriate tool to press it evenly into place. Ensure it is fully seated.
Reassemble all components in the reverse order of disassembly and torque all fasteners to manufacturer specifications.

Troubleshooting & FAQ

How do I confirm this fits my specific Yamaha engine?

This bushing fits a wide range of Yamaha 5HP and 8HP outboard motors from 1984 to present. Please review the "Engine & Model Compatibility" table and cross-reference your engine's original part number. It must match 647-45316-09 or 647-45316-00.

What are the signs of a failing drive shaft bushing?

Common symptoms include excessive vibration felt through the tiller or hull, unusual grinding or rattling noises from the lower unit, and noticeable play or movement in the drive shaft.

Can I install this bushing myself?

This is a press-fit component requiring specialized tools for both removal and installation to avoid damaging the part or the motor housing. Professional installation by a qualified marine mechanic is strongly recommended.

How does this aftermarket part compare to an OEM one?

Our bushing is manufactured from a high-quality, corrosion-resistant aluminum alloy designed to meet or exceed OEM specifications for fit, durability, and performance, offering a reliable and cost-effective alternative.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns?

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
This is an aftermarket replacement, not an OEM component.
Professional installation is recommended for safety and performance.

About Sea Sierra

Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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