Yamaha Piston Kit – Fits Yamaha 150HP 4-Stroke Outboards (Replaces 64D-11642-00-90/01-90/02-90)
Yamaha Piston Kit – Fits Yamaha 150HP 4-Stroke Outboards (Replaces 64D-11642-00-90/01-90/02-90) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Product Details
This Yamaha Piston Kit is designed for select Yamaha 150HP 4-Stroke outboard engines manufactured between 1996 and 2007, including 150F/FETO, 150TXR/TR, and 150AET models. The kit provides a reliable, high-quality replacement to restore engine compression and performance.
It serves as a direct interchange for Yamaha part numbers 64D-11642-00-90, 64D-11642-01-90, 64D-11642-02-90, and 64D-11642-00-93.
- Installation: This component is engine-specific and requires adherence to manufacturer service guidelines.
- Direct Fit: Engineered to match OEM dimensions for a hassle-free installation.
- Included Essentials: The kit contains one piston, one wrist pin, and two circlips.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By | Notes |
|---|---|---|---|
| Yamaha | 64D-11642-00-90 | 64D-11642-01-90 | |
| Yamaha | 64D-11642-01-90 | 64D-11642-02-90 | |
| Yamaha | 64D-11642-02-90 | Current Part | |
| Yamaha | 64D-11642-00-93 | Alternative OEM Part |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 150F/FETO | 150 | 4-Stroke | 1996–2007 | 64D-11642-02-90 | Supersedes 64D-11642-00-90, 64D-11642-01-90 |
| Yamaha | 150TXR/TR | 150 | 4-Stroke | 2002–2005 | 64D-11642-02-90 | Supersedes 64D-11642-00-90, 64D-11642-01-90 |
| Yamaha | 150AET | 150 | 4-Stroke | 2001–2002 | 64D-11642-02-90 | Supersedes 64D-11642-00-90, 64D-11642-01-90 |
Technical Specs
- Product Type
- Piston Kit
- Standard Bore Size
- 94 mm
- Dimensions
- 95 × 95 × 95 mm (3.74 × 3.74 × 3.74 in)
- Weight
- 0.7 kg (1.54 lb)
- Included Components
- Piston, wrist pin and circlips
What’s in the Box
- 1 × Piston Kit (Replaces 64D-11642-02-90)
Installation Notes
- Disconnect the battery and follow all standard safety precautions before starting work.
- Disassemble the engine according to the official service manual to access the cylinder and piston assembly.
- Inspect the cylinder wall for any scoring, wear, or damage. Confirm it is within designated specifications for a standard bore piston.
- Carefully install the new piston with the wrist pin and circlips, ensuring correct orientation as per the service manual.
- Reassemble the engine using new gaskets and seals as required, and torque all fasteners to the manufacturer-specified values.
- Perform a proper engine break-in procedure to allow the new components to seat correctly.
Troubleshooting & FAQ
How do I confirm this kit fits my specific engine?
This kit is for Yamaha 150HP 4-stroke models made between 1996 and 2007. Check your exact engine model and year against the compatibility chart. The surest way is to match the OEM part number (64D-11642-02-90) with the one listed in your engine's service manual.
Are piston rings included in this kit?
This kit contains the piston, wrist pin, and circlips only. Piston rings are sold separately, as ring size can depend on cylinder wear and servicing requirements. Please verify and order the correct rings for your engine.
What are the signs of a failing piston?
Common symptoms include a noticeable loss of engine power, increased oil consumption, blue-tinted smoke from the exhaust, or a persistent knocking or piston slap sound from the engine block.
How does this part compare to the original OEM version?
This is a premium aftermarket part engineered to meet or exceed original equipment manufacturer (OEM) specifications for quality, fit, and performance, offering a durable and cost-effective alternative.
What's the difference between OEM and Aftermarket parts?
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.
How much is shipping and how fast will it arrive?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
What is the warranty and return policy?
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.
Payment & Security
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