Universal Pinion for Tohatsu M9.9, M15, M18 and MX15/MX18E2 2-Stroke Outboards – Replaces 350-63064-0

Product Details

This Universal Pinion is an aftermarket replacement component for the bracket assembly on selected Tohatsu 2-stroke outboard engines. Catalog applications identify this pinion for Tohatsu M9.9, M15, M18, MX15, and MX18E2 model families across model years 2013 through 2020, subject to the exact engine model and parts diagram.

The pinion replaces Tohatsu reference number 350-63064-0. Confirm the model designation, engine year, existing part number, and bracket configuration before ordering.

• Replacement universal pinion for the bracket assembly
• Designed for selected Tohatsu 2-stroke outboard applications
• Supports repair of worn or damaged pinion teeth and related mechanism components
• Sold as one individual pinion

Part Number Information

Use the verified manufacturer reference below when comparing your original part.

Engine & Model Compatibility

The catalog occurrences below identify the part in Tohatsu bracket diagrams for the listed 2-stroke model families and years. Compatibility depends on the exact model designation and engine configuration.

Technical Specifications

Part Type

Universal pinion

Manufacturer Part Number

350-63064-0

Application

Bracket assembly

Compatible Brand

Tohatsu

Compatible Horsepower Ratings

9.9 HP, 15 HP, and 18 HP

Engine Type

Selected 2-stroke outboards

Model Years Shown in Catalogs

2013 through 2020

What's in the Box

• 1 × Universal Pinion

This listing is for the individual pinion only. Other bracket, gear, linkage, fastener, or assembly components are not included unless specifically shown or stated in the product package.

Installation Notes

1. Disconnect the battery and secure the outboard before servicing the bracket or related mechanism.
2. Access the bracket assembly according to the service procedure for your exact engine model.
3. Before removing the original pinion, record its orientation and position relative to the mating components.
4. Remove the worn or damaged pinion carefully without damaging the surrounding bracket, gears, shafts, or linkage.
5. Clean the mating surfaces and inspect the adjacent components for excessive wear, corrosion, or binding.
6. Install the replacement pinion in the same orientation as the original component.
7. Confirm proper engagement with the mating gear or mechanism and verify smooth movement by hand.
8. Reassemble the bracket, tighten fasteners according to the engine manufacturer's service information, and test the mechanism through its full range before operating the outboard.

Troubleshooting & FAQ

How do I know if the pinion needs replacement?

Common symptoms of a worn pinion may include rough or inconsistent mechanism operation, clicking or grinding noises, excessive play, or visible damage to the teeth. Inspect the mating components as well, since replacing only the pinion may not correct a problem caused by a worn gear, shaft, or linkage.

Which engines are listed for this pinion?

Catalog applications identify part number 350-63064-0 in selected Tohatsu 2-stroke M9.9D2, M15D2, M18E2, MX15E2, and MX18E2 model families from the listed model years 2013 through 2020. Verify your exact model and parts diagram before ordering.

Does this listing include the complete bracket assembly?

No. This listing is for one individual universal pinion. The bracket, mating gears, linkage, and other related components are not included unless separately stated.

Can I install this part myself?

Installation should be performed only by someone familiar with outboard service and the correct procedure for the specific engine. If you are unsure about disassembly, alignment, or adjustment, have the work completed by a qualified marine technician.

Is lubrication required?

Follow the lubrication instructions in the service information for your exact Tohatsu engine. Use only a lubricant compatible with the original mechanism and avoid applying excessive grease, which may collect dirt or interfere with operation.

What if the mechanism remains rough after installation?

Recheck pinion orientation and engagement, then inspect the mating gear, shaft, bracket, linkage, and controls for wear, corrosion, misalignment, or binding. Do not operate the outboard until the mechanism moves correctly and safely.

Is this an OEM part?

This is an aftermarket replacement pinion. Tohatsu part number 350-63064-0 is provided as the manufacturer reference for comparison and fitment checking; the replacement itself is not represented as a genuine Tohatsu part.

Safety & Important Information

• Verify the exact engine model, year, stroke, parts diagram, and original part number before ordering.
• Do not rely on horsepower alone to establish compatibility.
• Inspect mating components and the complete mechanism before returning the outboard to service.
• Professional installation is recommended when the correct service procedure or adjustment is uncertain.
• Stop use immediately if the control or related mechanism binds, slips, or fails to move smoothly.

About Sea Sierra

• Marine replacement parts selected for practical repair and maintenance applications.
• Product information organized around part-number and engine-application verification.
• Support available to help compare the replacement with your original component before purchase.