What is the bore size for this piston ring set?

This Manley Sport Compact piston ring set is designed for a standard 99.5mm bore. This is a common size for many Subaru Impreza engines from 2004-2011.

Are these piston rings CARB approved?

No, these piston rings are not CARB approved and cannot be shipped to California. Please check local regulations if you are outside of California.

What does the 1.2mm x 1.2mm x 2.0mm sizing refer to?

This refers to the dimensions of the piston rings themselves. The first two numbers (1.2mm) typically indicate the top and second compression rings, while the third number (2.0mm) is for the oil control ring. These specific dimensions are common for performance applications.

Specifications

Brand: Manley Performance
Part #: 46995-4
UPC: 807298040882

Manley Sport Compact 99.5mm Bore 1.2mm x 1.2mm x 2.0mm Standard Ring Set

Name: Manley Sport Compact 99.5mm Bore 1.2mm x 1.2mm x 2.0mm Standard Ring Set
Brand: Manley Performance
SKU: manley-performance-manley-sport-compact-99-5mm-bore-1-2mm-x-1-2mm-x-2-0mm-standa-t14-19087
Price: 184.03 USD
Availability: InStock

$184.03

Only 1 left in stock

Fits 2004-2011 Subaru Impreza. Manley Sport Compact 99.5mm bore standard piston ring set for engine rebuilds.

Key Features

Fits 2004-2011 Subaru Impreza.
Standard 99.5mm bore size.
Ring dimensions are 1.2mm x 1.2mm x 2.0mm.
Designed for performance engine builds.
Manley Performance is a well-known brand for engine components.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

The 1.2mm x 1.2mm x 2.0mm ring dimensions on this Manley Sport Compact set are a common specification for many performance-oriented Subaru Imprezas from 2004 to 2011. When you're rebuilding the engine in your Impreza, getting the right piston rings is crucial for proper sealing, which directly impacts compression, oil control, and overall engine health. These rings are designed to fit a 99.5mm bore, a standard size for many of these Subaru models.

Manley Performance is known for making well-built engine components, and this ring set is no exception. They are made to handle the demands of a performance engine, ensuring a solid seal between the piston and cylinder wall. This helps keep combustion pressure where it belongs and prevents excess oil from entering the combustion chamber. Installing these rings is a key step in ensuring your engine rebuild performs as expected and lasts.

Remember that these rings are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper seating and break-in procedures to get the best performance and longevity from your engine rebuild.