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Piston Ring Set (STD) – Fits Yamaha 75-115HP 4-Stroke Outboards (Replaces 6D8-11603-10-00)

Sale price $62.33 Regular price $99.00
Shipping calculated at checkout.

Piston Ring Set (STD) – Fits Yamaha 75-115HP 4-Stroke Outboards (Replaces 6D8-11603-10-00) is backordered and will ship as soon as it is back in stock.


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

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 aftermarket Piston Ring Set (STD) provides a reliable, direct-fit solution for Yamaha 75-115HP 4-Stroke outboards manufactured between 2004 and 2012. It is engineered to restore performance in F75, F80, F90, F100, and F115 series engines, ensuring proper compression and oil control.

This set serves as a direct interchange for Yamaha OEM part numbers 6D8-11603-10-00, 6D8-11603-11-00, 6D8-11603-01-00, 6D8-11603-00-00, 67F-11603-01-00, and 67F-11603-00-00.

  • Standard size (STD) for straightforward installation in non-bored cylinders.
  • Precision-machined for a 79mm cylinder bore diameter.
  • Includes one complete ring set for servicing a single piston.

Part Number Matrix

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

Brand Part Number Superseded By Notes
Yamaha 6D8-11603-11-00 6D8-11603-10-00
Yamaha 6D8-11603-01-00 6D8-11603-10-00
Yamaha 6D8-11603-00-00 6D8-11603-10-00
Yamaha 67F-11603-01-00 6D8-11603-10-00
Yamaha 67F-11603-00-00 6D8-11603-10-00

Engine & Model Compatibility

Confirm your engine model and year in the tables below. This part is designed for specific Yamaha outboard models.

Yamaha Outboard Models

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha F75TLR 75 4-Stroke 2004–2012 6D8-11603-10-00 Also F75TLRD
Yamaha F80TLR 80 4-Stroke 1999–2001 6D8-11603-10-00 Also F80TLRX, F80TLRY, F80TLRZ
Yamaha F90TJR 90 4-Stroke 2004–2012 6D8-11603-10-00 Includes TJRD, TLR, TLRD, TXR, TXRD variants
Yamaha F90JA 90 4-Stroke 2012 6D8-11603-10-00 Also F90LA, F90XA
Yamaha F100TLR 100 4-Stroke 1999–2002 6D8-11603-10-00 Includes TLRX, TLRY, TLRZ, TLRA, TLRB variants
Yamaha F100TXR 100 4-Stroke 1999–2002 6D8-11603-10-00 Includes TXRX, TXRY, TXRZ, TXRA, TXRB variants
Yamaha F115TLR 115 4-Stroke 2000–2012 6D8-11603-10-00 Includes TJR, TJRC, TLRC, TXRC variants
Yamaha F115JA 115 4-Stroke 2011–2012 6D8-11603-10-00 Also F115LA, F115XA

Yamaha International Model Codes

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha F75BET/BETL 75 4-Stroke 2004–2012 6D8-11603-10-00 Models 6D61-6D69
Yamaha F80AET/AETL 80 4-Stroke 1999–2005 6D8-11603-10-00 Models 67G-67G5
Yamaha F80BET/BETL 80 4-Stroke 2005–2012 6D8-11603-10-00 Models 6D71-6D79
Yamaha F90BET/BETL 90 4-Stroke 2004–2012 6D8-11603-10-00 Models 6D81-6D89
Yamaha F100AET/AETL 100 4-Stroke 1999–2004 6D8-11603-10-00 Models 67F-67F5
Yamaha F100DET/DETL 100 4-Stroke 2004–2012 6D8-11603-10-00 Models 6D91-6D99
Yamaha F115AET/AETL 115 4-Stroke 2000–2012 6D8-11603-10-00 Models 68V-68VA
Yamaha FL115AET/AETX 115 4-Stroke 2000–2012 6D8-11603-10-00 Models 68W-68WA (Counter-rotation)

Technical Specs

Product Type
Piston Ring Set
Installation
Standard Size (STD)
Ring Diameter
79mm
Product Dimensions
8.0" L x 8.0" W x 0.4" H

What’s in the Box

  • 1 x Piston Ring Set (STD) for one piston (Replaces 6D8-11603-10-00)

Installation Notes

  1. Disconnect the battery and fuel supply as a safety precaution.
  2. Drain engine oil and coolant before accessing internal components.
  3. Remove the cylinder head and other necessary parts to access the piston.
  4. Carefully extract the piston from the cylinder bore.
  5. Using a ring expander tool, remove the old piston rings.
  6. Thoroughly clean the piston ring grooves, removing all carbon buildup.
  7. Install the new rings onto the piston, ensuring they are in the correct order and orientation.
  8. Lubricate the piston, rings, and cylinder wall with fresh engine oil.
  9. Use a piston ring compressor to carefully guide the piston back into the cylinder.
  10. Reassemble all components in reverse order of removal, torquing bolts to manufacturer specifications.
  11. Refill engine oil and coolant. Reconnect the battery and test the engine.

Troubleshooting & FAQ

How do I know if these piston rings will fit my engine?

Verify your engine model and year against the compatibility tables on this page. It is crucial to match your complete engine model number (e.g., F75TLR) to ensure a proper fit. If you are unsure, please contact us with your engine details before purchasing.

What are the signs of a failing piston ring?

Common symptoms of worn or damaged piston rings include excessive oil consumption, blue or grey exhaust smoke, noticeable loss of engine power, and poor results from a cylinder compression test.

Is this a complete set for one piston?

Yes, this package contains one complete ring set required to service a single piston. If you are rebuilding multiple cylinders, you will need to purchase one set for each piston.

Does the 79mm diameter refer to the piston or the cylinder bore?

The 79mm dimension refers to the standard cylinder bore diameter for which these rings are designed. This ensures a tight seal for optimal compression.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility and batch-inspected for consistency.

Shipping speed & cost?

We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options will appear at checkout where available.

Warranty & returns?

This product is 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 and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
  • This is an aftermarket replacement part, not an OEM component.
  • Professional installation is highly recommended for safety and optimal performance.

About Sea Sierra

  • Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world durability.
  • Fast Global Fulfillment — Free standard delivery to most regions, typically arriving in 5–15 days.
  • Manufacturer-Direct Value — Fair pricing on reliable parts without compromising on materials or quality control.

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