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Porsche Piston Ring Set (STD) 99310392506

GENUINE PORSCHE
Availability:
Out of stock
SKU 99310392506
Sold out
$151.23 - $151.23
$151.23
$151.23 - $151.23
$151.23
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 99310392506) is a high-quality replacement part that is designed to provide exceptional performance for your Porsche. The product is constructed using premium materials that are built to last and withstand the rigors of daily use.

This piston ring has been engineered to deliver superior sealing capabilities, which ensures that your engine operates efficiently and smoothly. It is designed to work seamlessly with your Porsche’s engine, allowing you to experience an unmatched level of power and performance.

The Genuine Porsche Engine Piston Ring is manufactured to strict quality standards, ensuring that it meets or exceeds the original equipment specifications. This guarantees that you will get a reliable and long-lasting part that will keep your Porsche running smoothly for years to come.

With its precision fit and exceptional durability, the Genuine Porsche Engine Piston Ring is the ideal replacement part for your Porsche. Whether you are repairing your engine or performing routine maintenance, this part is an essential component that will ensure your Porsche is running at its best.

In summary, the Genuine Porsche Engine Piston Ring (Part Number 99310392506) is a top-quality replacement part that delivers exceptional performance and durability. Its precision fit, superior sealing capabilities, and strict quality standards make it an ideal choice for any Porsche owner looking to maintain the performance and longevity of their vehicle.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 7 applications
Porsche
Make Model Engine Years
Porsche 911Carrera 3.6H6 1995–1998
Porsche 911Carrera 4 3.6H6 1995–1998
Porsche 911Carrera S 3.6H6 1998–1998
Porsche 911Carrera 4S 3.6H6 1996–1998
Porsche 911Targa 3.6H6 1996–1998
Porsche 911Turbo 3.6H6 1996–1997
Porsche 911Turbo S 3.6H6 1997–1997

Fitment data last updated: 2026-10-02

Fits 7 vehicle applications Check vehicle fitment before ordering View fitment

About these Piston Rings

The GENUINE PORSCHE 99310392506 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.