What is the compression ratio of these pistons?

These Mahle MS pistons are designed with a 12.0:1 compression ratio. This higher ratio can contribute to improved engine performance when properly tuned.

Are these pistons suitable for all Porsche 997 models?

This specific piston set is designed for Porsche 997 models equipped with the 3.8L engine. It is important to confirm your engine's displacement and model year to ensure compatibility.

What does 'forged' mean for these pistons?

Forged pistons are made by heating and hammering aluminum into shape, creating a very strong and dense material. This makes them highly durable and capable of withstanding the high pressures and temperatures found in performance or rebuilt engines.

Mahle MS Piston Set 3.8L 100mm Bore 197846037

Name: Mahle MS Piston Set Por 997 3.8L 100mm Bore 82.8mm Stk 141.99mm Rod 22mm Pin -13.2cc 12.0CR Set of 6
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-por-997-3-8l-100mm-bore-82-8mm-stk-141-99mm-rod-22mm-p-t14-224470
Price: 1121.22 USD
Availability: BackOrder

Mahle MS Piston Set Por 997 3.8L 100mm Bore 82.8mm Stk 141.99mm Rod 22mm Pin -13.2cc 12.0CR Set of 6

$1121.22

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 3.8L engines. Features a 100mm bore and 12.0:1 compression ratio for improved performance.

Key Features

This set includes six forged pistons for Porsche 997 3.8L engines.
Features a 100mm bore size.
Designed with a 12.0:1 compression ratio for improved performance.
Each piston has a 13.2cc dish volume.
Compatible with an 82.8mm stock stroke crankshaft.
Intended for use with 141.99mm connecting rods.

This piston set is designed for Porsche 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

Secure CheckoutFast Shipping631-982-0042

Product Details

If you're rebuilding the engine in your Porsche 997 with the 3.8L engine, a quality set of pistons is crucial for getting the performance and reliability you expect. This Mahle MS Piston Set is built to precise specifications, ensuring a solid foundation for your engine's top end. These pistons are designed for a 100mm bore and feature a 12.0:1 compression ratio, which can offer an improved power output when paired with the right tuning.

Mahle is a well-known name in engine components, and this set reflects that reputation. The pistons are forged, a process that creates a very strong and durable part capable of handling the stresses of a high-performance engine. The set includes six pistons, each with a 13.2cc dish volume and designed to work with a stock 82.8mm stroke crankshaft and a 141.99mm connecting rod. The wrist pin diameter is 22mm, a common size that simplifies sourcing compatible connecting rods if needed.

When undertaking an engine rebuild of this caliber, attention to detail is key. This set is designed for a direct fit into the specified Porsche 997 3.8L engines. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and any specific requirements for your build.