1. Pistons, Rings & Piston Kits Products
  2. sku: 11796944321603861
  3. YAMAHA 166-11601-30

YAMAHA 166-11601-30 Yl Oversized Piston Ring Set L5 L2 L3 0.75MM 3RD

fits make: Yamaha. year: 1966–1973.

166-11601-30 Yamaha 1966-1973 Yl L5 L2 L3 Oem 0.75mm 3rd Oversized Piston Ring Set 166-11601

( Manufacturer Part Number: 166-11601-30 ), ( Part Type: Ring Piston ), ( Country Of Origin: United States ), ( Manufacturer Warranty: Unspecified Length ), ( Storage Location: K7 Mot-n Buk 49 Bin 2 )

Review YAMAHA Yl L5 L2 L3 Oem 0.75mm 3rd Oversized Piston Ring Set 166-11601 fits 1966–1973

Introducing the Yamaha 166-11601-30 0.75mm 3rd oversized piston ring set, specifically designed for Yamaha outboard engines from the years 1966 to 1973. These piston rings belong to the L5, L2, and L3 series and are an essential upgrade for any engine owner seeking superior performance, durability, and efficiency.

This piston ring set is oversized, which means the rings have a larger outside diameter compared to the standard ones. The oversizing allows for a tighter piston-to-cylinder fit, minimizing the compression leakage and reducing the blowby gases. As a result, the engine can operate more efficiently, delivering more power and torque, while also reducing fuel consumption and exhaust emissions.

The rings are manufactured using high-quality materials, ensuring they can withstand the rigors of continuous use in marine environments. The 0.75mm thickness provides an optimal balance between ring strength and flexibility, allowing them to adapt to the cylinder wall's shape and expand evenly during the combustion process.

The set includes three rings: the compression ring, the oil control ring, and the top oil ring. The compression ring is responsible for sealing the combustion chamber, allowing the fuel-air mixture to compress and ignite efficiently. The oil control ring ensures that the engine's oil film is maintained, preventing the piston from coming into direct contact with the cylinder wall and reducing friction. The top oil ring helps maintain the proper lubrication of the piston and reduces the loss of engine oil.

By installing these oversized piston rings, you can expect your Yamaha outboard engine to exhibit improved power output, enhanced fuel efficiency, and extended engine life. These benefits make the Yamaha 166-11601-30 0.75mm 3rd oversized piston ring set an excellent investment for any serious engine enthusiast or commercial marine operator.

Buying a Yamaha 166-11601-30 0.75mm 3rd Oversized Piston Ring Set for a Yamaha L5, L2, or L3 Engine: Pros, Cons, and Conclusion

Introduction:

The Yamaha 166-11601-30 0.75mm 3rd oversized piston ring set is a replacement part designed for Yamaha L5, L2, and L3 engines. This article will discuss the potential advantages and disadvantages of purchasing this piston ring set, ending with a conclusion and a recommendation.

Pros:

1. Improved Engine Performance: Oversized piston rings are known to provide better engine sealing, reducing oil consumption and improving combustion efficiency. This can ultimately lead to improved engine performance.

2. Extended Engine Life: By reducing oil consumption and preventing piston-to-cylinder contact, oversized piston rings can help extend the life of the engine.

3. Better Durability: The 0.75mm thickness of these piston rings ensures that they are more durable than standard rings, allowing for better resistance to wear and tear.

Cons:

1. Higher Cost: Oversized piston rings, like the Yamaha 166-11601-30, tend to be more expensive than their standard counterparts. This may deter some buyers.

2. Installation Complexity: Installing oversized piston rings can be a more complicated process than installing standard rings. This may require additional labor costs and specialized tools.

3. Potential for Engine Damage: If not installed correctly, oversized piston rings can cause engine damage. Proper installation and maintenance are crucial.

Conclusion:

The Yamaha 166-11601-30 0.75mm 3rd oversized piston ring set offers several advantages, including improved engine performance, extended engine life, and better durability. However, it comes with some drawbacks, such as a higher cost, installation complexity, and potential for engine damage.

Recommendation:

If you are experiencing recurring engine issues, such as excessive oil consumption or poor performance, and you own a Yamaha L5, L2, or L3 engine, the Yamaha 166-11601-30 0.75mm 3rd oversized piston ring set may be a worthwhile investment. However, it is essential to ensure that you have the necessary skills, tools, and expertise to install these rings correctly to avoid potential engine damage. If you are unsure, it may be best to consult a professional mechanic for assistance.

Details:

4.8 out of 5 stars across 322 reviews. Do you accept offers?, Some listings offers. To Watch. We started with a single motorcycle dismantled in home garage.

We review all reasonable offers promptly. Please verify the part number and compatible model's before purchasing.: Are these genuine OEM parts?, Yes. This genuine Yamaha OEM 3rd oversized 0.75mm piston ring set is designed for vintage YL, L5, L2, and L3 model's.

Look for the Make Offer button on listing page. It is essential for engine rebuilds where cylinders have been bored to accommodate oversized pistons, restoring compression and performance. Residential delivery with lift gate is available. Every part is one-of-a-kind.

Item must be in original, uninstalled condition with no modifications. Spotlight: A Day Inside . FREE shipping on every order to the lower 48 states. Do you combine shipping?, Yes.

Larger items from $46.99.

part #: 1661160130 prices

  • $11.49-$24.99

specifications pistondon:

  • for makes: Yamaha
  • for years: 1966-1973
  • mpn: 166-11601-30
  • part type: Ring Piston
  • country of origin: United States
  • manufacturer warranty: Unspecified Length
  • storage location: K7 Mot-n Buk 49 Bin 2

shipping pistondon:

  • service: USPS Ground Advantage, USPS Priority Mail, FedEx 2Day, Overnight
  • carrier: USPS, FedEx
  • cost: $0.00
  • type: Fixed
  • class: Standard, Expedited, One-day
  • transit: 3-8 Days

general pistondon:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
  • condition: New other see details

offer pistondon:

  • availability: In Stock
  • options: Ship-to-home
  • quantity: 8
  • sold: 0
  • started: April 13, 2026

seller pistondon:

  • rating: 99.4%
  • city: Odessa, Florida
  • # reviews: 221876

returns pistondon:

  • time: 30 Days
  • policy: Returns Accepted
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for makes: yamaha, for years: 1966-1973, part type: ring piston, country of origin: united states, manufacturer warranty: unspecified length, storage location: k7 mot-n buk 49 bin 2,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 11796944321603861,

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5 offers $11.49–$24.99 USD
  • Offer #1: $24.99 price + $0.00 shipping estimate = $24.99* total. It is essential for engine rebuilds where cylinders have been bored to accommodate oversized pistons, restoring compression and performance.FREE SHIPPING
  • Offer #2: $22.49 price + $0.00 shipping estimate = $22.49* total. This item is in EXCELLENT condition.FREE SHIPPING
  • Offer #3: $11.49 price + $5.62 shipping estimate = $17.11* total. Model lists are for reference only and may not be complete. The item is designed to fit perfectly and function seamlessly with your bike.+$5.62 shipping
  • Offer #4: $10.00 price + $5.00 shipping estimate = $15.00* total.+$5.00 shipping
  • Offer #5: $8.45 price + $0.00 shipping estimate = $8.45* total.FREE SHIPPING

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