Lower Unit Gasket Kit – Fits Yamaha F200 & F225 (Replaces 69J-W0001-20-00)

$87.99

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Product Details

This complete Lower Unit Gasket Kit provides all necessary seals and gaskets for servicing the gear housing on Yamaha 4-Stroke F200 and F225 outboard engines from 2002 to present.

It serves as a direct replacement for OEM part 69J-W0001-20-00 and aftermarket equivalents like Mallory Marine 9-74517.

Contains all required gaskets and seals for a complete lower unit service.
Designed as a direct service replacement part for straightforward installation.
Covered by a 2-year manufacturer warranty (Mallory Marine version).

Part Number Matrix

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

Brand	Part Number
Yamaha	69J-W0001-20-00
Mallory Marine	9-74517

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.
Yamaha	F200	200	4-Stroke	2002	69J-W0001-20-00
Yamaha	LF200	200	4-Stroke	2002	69J-W0001-20-00
Yamaha	F225	225	4-Stroke	2002	69J-W0001-20-00
Yamaha	LF225	225	4-Stroke	2002	69J-W0001-20-00

Technical Specs

Product Type: Lower Unit/Gear Housing Gasket Kit
Installation: Service replacement part
Dimensions: 15.5" L x 14.5" W x 5.5" H
Warranty: 2 years (Mallory Marine aftermarket version)
Other Technical Attributes: Contains necessary gaskets and seals for lower unit service

What’s in the Box

1 x Lower Unit Gasket Kit (Replaces 69J-W0001-20-00)

Installation Notes

Disconnect the battery and shift linkage before starting.
Drain the gearcase lubricant completely into an approved container.
Remove all lower unit mounting bolts.
Carefully lower and remove the gearcase from the drive shaft housing.
Disassemble the lower unit as required to access all old gaskets and seals.
Thoroughly clean all mating surfaces to remove old gasket material and sealant residue.
Install the new gaskets, O-rings, and seals from the kit, ensuring correct placement.
Lightly lubricate new seals and O-rings with marine grease before assembly.
Reassemble the lower unit components and reinstall the gearcase, Torquing bolts to manufacturer specs.
Refill the gearcase with the correct type and amount of fresh gear lubricant.
Reconnect the shift linkage and battery.
After launching, check for leaks and test for proper forward, neutral, and reverse gear operation.

Troubleshooting & FAQ

How do I know if this gasket kit fits my Yamaha engine?

This kit is designed for Yamaha 4-Stroke F200 and F225 models (including LF models) from 2002 to present. The compatible OEM part number is 69J-W0001-20-00. Always check your engine's service manual or existing part number to confirm fitment.

What are signs that my lower unit gaskets are failing?

The most common signs are milky or creamy-looking gear lube (indicating water intrusion), visible oil leaks from the seams of the lower unit, or a metallic sheen in the drained oil, which suggests accelerated wear due to water contamination.

Does this kit fit both standard and counter-rotation models?

Yes, this gasket kit is compatible with both standard rotation (e.g., F225) and counter-rotation (e.g., LF225) models, as they share the same lower unit housing seals and gaskets.

How often should I replace my lower unit gaskets?

It's best practice to replace lower unit gaskets and seals whenever the gearcase is removed for other service, such as a water pump impeller change. They should be replaced immediately if you discover water in the gear lube during your annual or 100-hour service checks.

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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