Piston Kit (Without Rings) – Fits Suzuki DT35/DT40 (Replaces 12110-94350K)

$99.99

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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).

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Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This is a complete Piston Kit (Without Rings) for Suzuki 35–40 HP 2-stroke outboard motors (1980–1982), including the DT35 and DT40 models. It provides a reliable, direct-fit replacement for worn or damaged original pistons to restore engine compression and performance.

This kit is a direct replacement for Suzuki OEM part numbers 12110-94350 and 12110-94350K.

Engineered as a direct OEM-equivalent replacement for straightforward installation.
Constructed from a durable aluminum alloy with high silicon content for heat resistance.
Note: Piston rings are not included with this kit and must be purchased separately.

Part Number Matrix

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

Brand	Part Number	Notes
Suzuki	12110-94350K	Current part number
Suzuki	12110-94350	Superseded by 12110-94350K

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This piston kit is designed for specific Suzuki DT series outboards.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
Suzuki	DT35	35	2-Stroke	1980–1982	12110-94350K	Superseded 12110-94350
Suzuki	DT40	40	2-Stroke	1980–1982	12110-94350K	Superseded 12110-94350

Technical Specs

Product Type: Piston Kit (Without Rings)
Installation: OEM Direct Replacement
Fuel Type: Gasoline (Petrol)
Housing Material: Aluminum Alloy with High Silicon Content
Product Weight: 0.38 kg (0.84 lb)
Product Dimensions: 8.5" x 8.5" x 8.5"
Other Technical Attributes: Requires separate purchase of piston rings

What’s in the Box

1 x Piston Kit Without Rings (12110-94350K)

Installation Notes

Disconnect the battery and fuel lines before starting work.
Carefully remove the cylinder head and engine block components to access the piston.
Inspect the cylinder wall for scratches or scoring and clean it thoroughly.
Install the new piston onto the connecting rod, ensuring the correct orientation as per your service manual.
Use a piston ring compressor (not included) if installing new rings, and gently guide the assembly into the cylinder.
Reassemble all components using the torque specifications recommended by the manufacturer.
Reconnect the fuel system and battery, then check for proper operation.
Always refer to your engine’s official service manual for detailed, model-specific instructions.

Troubleshooting & FAQ

Will this piston fit engines outside the 1980–1982 year range?

This kit is specifically manufactured for Suzuki DT35 and DT40 models produced between 1980 and 1982. We do not guarantee fitment on other years or models, and using it on an incompatible engine could cause damage.

Does this kit include piston rings?

No, this is a Piston Kit Without Rings. Piston rings must be purchased separately to match your cylinder's specifications.

What are the signs of a failing piston?

Common indicators of a worn or damaged piston include a noticeable loss of engine compression, increased oil consumption, blue-tinted smoke from the exhaust, or a persistent knocking/ticking sound from the engine internals.

How can I confirm this part is correct for my outboard?

Please check that your engine is a Suzuki DT35 or DT40 from the years 1980–1982. The most reliable method is to cross-reference the part number stamped on your old piston with the numbers provided in our Part Number Matrix.

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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