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Porsche Piston Ring Set (STD) 99310392551

GENUINE PORSCHE
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SKU 99310392551
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$151.23 - $151.23
$151.23
$151.23 - $151.23
$151.23
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CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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The Genuine Porsche Engine Piston Ring part number 99310392551 is a must-have component for your Porsche engine. Crafted from premium quality materials, this piston ring is engineered to deliver exceptional performance for your car’s engine.

This piston ring boasts several features that set it apart from other piston rings in the market. Firstly, it is designed to perfectly fit your Porsche engine, ensuring that it operates optimally. Additionally, it is made from high-quality materials that are durable and long-lasting, making it a cost-effective choice for your engine’s maintenance needs.

One of the most significant benefits of the Genuine Porsche Engine Piston Ring part number 99310392551 is that it helps to improve the engine’s performance. The piston ring creates a tight seal between the piston and the cylinder wall, thereby preventing leakage of combustion gases. Improved sealing results in increased compression, which translates to better fuel efficiency and engine power.

Another benefit is that this piston ring reduces engine oil consumption. By creating an airtight seal, it minimizes the amount of oil that enters the cylinder, thereby reducing oil consumption. This translates into fewer oil changes and lower maintenance costs in the long run.

The Genuine Porsche Engine Piston Ring part number 99310392551 is suitable for various applications, including Porsche 911, 964, and 993 models. It is an essential component for engine maintenance and ensures that your engine operates at its best performance. If you want to improve your Porsche’s engine performance and longevity, this piston ring is a valuable investment.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 2 applications
Porsche
Make Model Engine Years
Porsche 911Turbo 3.6H6 1996–1997
Porsche 911Turbo S 3.6H6 1997–1997

Fitment data last updated: 2026-10-02

Fits 2 vehicle applications Check vehicle fitment before ordering View fitment

About these Piston Rings

The GENUINE PORSCHE 99310392551 piston rings seal the gap between the piston and the cylinder wall, holding combustion pressure and controlling oil. Worn rings lead to low compression, oil consumption and blow-by.

Frequently asked questions

What do piston rings do?

The top rings seal combustion pressure, and the oil control ring scrapes excess oil from the cylinder wall back into the crankcase. Together they keep compression up and oil out of the combustion chamber.

What are the signs of worn piston rings?

High oil consumption, blue smoke especially under acceleration, low compression or failed leak-down test, loss of power, and excessive crankcase pressure.

What should I check before fitting new rings?

Measure the cylinder bore for wear and taper, and hone or machine it as required so the new rings can seat. Check the ring end gap in the bore and the fit in the piston grooves against specification.

Can I install piston rings myself?

It is a precision job that requires engine disassembly, careful measurement, correct ring orientation and a ring compressor for installation. It is best done by an experienced engine builder.

How do I make sure this piston ring set fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

Euromotiv is an independent retailer of OEM, Genuine, and aftermarket automotive parts. We are not affiliated with, endorsed by, or authorized by Audi AG, Volkswagen AG, BMW AG, Mercedes-Benz Group AG, Dr. Ing. h.c. F. Porsche AG, MINI, or any other vehicle manufacturer. All trademarks, logos, and brand names are the property of their respective owners and are used solely for identification and compatibility purposes.