What is the compression ratio of this piston set?

This Mahle MS Piston Set is designed to achieve a compression ratio of 11.8:1. This is calculated based on the 99mm bore, 82.8mm stroke, and the -13.2cc dish volume of the pistons.

Are these pistons suitable for all 997 models?

These pistons are specifically designed for 997 models equipped with the 3.8L engine. It is important to confirm your engine's displacement and model year to ensure proper fitment.

Can these pistons be shipped to California?

No, these pistons are not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle MS Piston Set 99mm Bore 197837098

Name: Mahle MS Piston Set Por 997 3.8L 99mm Bore 82.8mm Strk 141.99mm Rod 22mm Pin -13.2cc 11.8CR Set of 6
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-por-997-3-8l-99mm-bore-82-8mm-strk-141-99mm-rod-22mm-p-t14-224467
Price: 1147.85 USD
Availability: BackOrder

Mahle MS Piston Set Por 997 3.8L 99mm Bore 82.8mm Strk 141.99mm Rod 22mm Pin -13.2cc 11.8CR Set of 6

$1147.85

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle MS Piston Set for 997 3.8L engines. Features a 99mm bore and 11.8:1 compression ratio for improved performance.

Key Features

Fits 997 models with 3.8L engines.
Set includes six forged pistons.
Features a 99mm bore and 82.8mm stroke.
Pistons have a -13.2cc dish volume.
Calculated compression ratio is 11.8:1.
Connecting rod length is 141.99mm.

This piston set is designed for 997 models with the 3.8L engine. Please verify compatibility with your specific vehicle's engine configuration.

⚠️ 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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Product Details

Mahle is a well-known name in the automotive industry, particularly for their expertise in engine components. They are recognized for producing high-performance parts that meet demanding standards. This Mahle MS Piston Set is a prime example, designed for 997 models with the 3.8L engine.

This set includes six forged pistons, each featuring a 99mm bore and an 82.8mm stroke, contributing to the engine's overall displacement and power potential. The pistons are engineered with a -13.2cc dish volume, resulting in a calculated compression ratio of 11.8:1. This higher compression ratio can lead to improved combustion efficiency and a noticeable increase in power output when paired with appropriate tuning. The connecting rod length is 141.99mm, and the wrist pin diameter is 22mm, ensuring proper fitment and integration within the engine assembly. These pistons are built for durability and performance, suitable for builds where engine power and reliability are key considerations.

When installing this piston set, it's important to note that they are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for specific details regarding assembly and break-in procedures to ensure optimal performance and longevity of your engine build.