What is the specific ring size for this set?

This set includes a 1.2mm top ring, a 1.2mm second ring, and a 2.0mm oil ring. The set is designed for a standard 99.50mm bore.

Are these rings suitable for all 2004+ Subaru WRX STI models?

Yes, these rings are intended for 2004 and newer Subaru WRX STI models. They are designed to fit a standard 99.50mm bore size commonly found in these vehicles.

Why do these rings have a 'double-tabbed' design?

The double-tabbed design helps ensure the piston rings are correctly oriented and seated in the piston groove. This alignment is important for proper sealing and to prevent issues like blow-by during engine operation.

Specifications

Brand: Manley Performance
Part #: 46995DT-4
UPC: 807298101149

Manley 2004+ Subaru WRX STI 99.50mm STD Bore 1.2mm Double Tabbed Rings - Set of Four

Name: Manley 2004+ Subaru WRX STI 99.50mm STD Bore 1.2mm Double Tabbed Rings - Set of Four
Brand: Manley Performance
SKU: manley-performance-manley-2004-subaru-wrx-sti-99-50mm-std-bore-1-2mm-double-tabb-t14-118299
Price: 184.03 USD
Availability: InStock

$184.03

Only 4 left in stock

Manley 2004+ Subaru WRX STI 99.50mm STD Bore 1.2mm Double Tabbed Rings - Set of Four. Essential for engine rebuilds.

Key Features

Fits 2004 and newer Subaru WRX STI models.
Standard bore size of 99.50mm.
Set includes four complete sets of piston rings.
Features a 1.2mm top ring, 1.2mm second ring, and 2.0mm oil ring.
Double-tabbed design aids in correct ring placement.
Not CARB approved; cannot ship to California.

These piston rings are designed for 2004 and newer Subaru WRX STI models with a standard 99.50mm bore.

⚠️ 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

Manley Performance is well-known for making strong internal engine components. These double-tabbed piston rings are a solid option for your 2004 and up Subaru WRX STI, especially if you're rebuilding the engine. They're designed to fit a standard 99.50mm bore, which is crucial for proper sealing and compression in your boxer engine.

This set includes four rings, each featuring a 1.2mm top ring, a 1.2mm second ring, and a 2.0mm oil ring. The double-tabbed design helps ensure the rings align correctly in the piston groove, which is important for preventing blow-by and maintaining consistent cylinder pressure. Getting the ring gap and orientation right is key during assembly, and these rings make that process more straightforward.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. If you're working on a performance build or a standard engine overhaul for your STI, these Manley rings are a reliable choice to help get your engine back to spec.