Yamaha Piston Ring Kit 0.25mm – Fits Yamaha 60HP & 70HP Outboards (Replaces 6K5-11601-12)
Yamaha Piston Ring Kit 0.25mm – Fits Yamaha 60HP & 70HP Outboards (Replaces 6K5-11601-12) 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 Ring Kit 0.25mm is a high-quality replacement component designed for Yamaha 50HP, 60HP, and 70HP 2-stroke outboard engines manufactured between 1997–2013. It serves as an essential internal part for engine rebuilds or repairs where the cylinder has been bored to an oversize dimension.
It directly replaces OEM part numbers 6K5-11601-12 and 6K5-11601-12-00, along with other aftermarket equivalents, ensuring a precise fit for a reliable engine refresh.
- Compatible with cylinders bored to a 72.25mm diameter (0.25mm oversize).
- Engineered for use in marine gasoline engines.
- Designed for professional installation as an internal engine component.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 6K5-11601-12 | OEM Reference |
| Yamaha | 6K5-11601-12-00 | OEM Supersession |
| Aftermarket | REC6K5-11601-12 | Direct Replacement |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This kit is confirmed to fit a range of Yamaha 2-stroke outboards. Please verify your specific model is listed.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | E60HE | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | E60HM | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | E60H | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | E60MHZ | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | E60MLHA | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | E60LHB | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | E60HMD | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | 70B | 70 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | 70BEHDO | 70 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | 70BEMO | 70 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | 70BEO | 70 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | 70BETO | 70 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | 70TDR | 70 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | 70TR | 70 | 2-Stroke | 1997–2013 | 6K5-11601-12 | |
| Yamaha | 50G | 50 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 50GEO | 50 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 50GETO | 50 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 60F | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 60FEDO | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 60FEHT | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 60FEO | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 60FET | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 60FETO | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 60TDR | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 60TLR-B | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
| Yamaha | 60TR-Z | 60 | 2-Stroke | 1997–2013 | 6K5-11601-12 | Additional compatibility from source 2 |
Technical Specs
- Product Type
- Piston Ring Kit
- Size
- 0.25mm Oversize (for 72.25mm bore)
- Installation
- Engine Internal Component
- Fuel Type
- Gasoline
- Dimensions
- 7.5 × 7.5 × 1.5 cm
- Weight
- 0.03 kg (0.07 lb)
What’s in the Box
- 1 x Piston Ring Kit (0.25mm Oversize)
Installation Notes
- Ensure the engine is off and the battery is disconnected before starting work.
- Disassemble the powerhead to access the engine block, pistons, and cylinders.
- Carefully remove the cylinder head and extract the piston requiring the new rings.
- Using a ring expansion tool, remove the old rings from the piston.
- Thoroughly clean the piston's ring grooves, removing all carbon buildup and debris.
- Install the new piston rings into the correct grooves, ensuring they are oriented properly (check for markings).
- Verify the ring end gaps are within specification and are staggered correctly around the piston.
- Generously lubricate the new rings, piston skirt, and cylinder wall with 2-stroke engine oil.
- Use a ring compressor to carefully guide the piston back into the cylinder bore.
- Reassemble the engine components, torquing all fasteners to the manufacturer's specifications.
- After reassembly, it is advisable to perform a compression test.
Troubleshooting & FAQ
How do I know if I need 0.25mm oversize rings?
Oversize rings are required when a cylinder has been machined (bored) to correct for wear, scoring, or damage. Measure your cylinder bore diameter—if it is 72.25mm, this is the correct kit. A standard bore would use standard-size rings.
What are the signs of failing piston rings?
Common symptoms include excessive blue or white exhaust smoke, a noticeable loss of engine power, increased oil consumption, poor compression test results, and excessive "blow-by" (crankcase pressure).
Will this kit fit an engine model not on the list?
We can only guarantee fitment for the models listed in the compatibility table. Using this part on other models is not recommended, as even small differences can lead to engine damage.
How many pistons does this kit service?
This kit contains the rings for a single piston. If you are rebuilding multiple cylinders, you will need to purchase one kit per piston.
Is a special tool required for installation?
Yes, professional installation requires specialized tools such as a piston ring expander, a piston ring compressor, and a torque wrench to ensure the rings are not damaged and everything is reassembled to factory specifications.
Can I reuse my old piston rings?
No. Piston rings are a wear item and should always be replaced during an engine rebuild or when a piston is removed from the bore. Reusing old rings will result in poor sealing, low compression, and potential engine failure.
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.
Payment & Security
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