How many pistons are included in this set?

This is a single piston set, meaning you will receive one piston. You will need to purchase the correct quantity for your specific engine build, typically one per cylinder.

What material is this piston made from?

This Mahle piston is constructed from 2618 aluminum. This alloy is chosen for its strength and ability to withstand high temperatures and pressures, common in performance engine applications.

Can this piston set be shipped to California?

No, this piston set is not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle S55 Forged Piston Set 197879807-1

Name: Mahle MS Piston Set BMW S55 84mm Bore 89.6mm Stroke 144.35mm Rod 22mm Pin -10.5cc 10.2CR Single
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-bmw-s55-84mm-bore-89-6mm-stroke-144-35mm-rod-22mm-pin--t14-420176
Price: 146.89 USD
Availability: BackOrder

Mahle MS Piston Set BMW S55 84mm Bore 89.6mm Stroke 144.35mm Rod 22mm Pin -10.5cc 10.2CR Single

$146.89

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 BMW S55 3.0L engines. Features 84mm bore and 10.2:1 compression ratio.

Key Features

Fits BMW S55 3.0L engines.
84mm bore size.
10.2:1 compression ratio.
Constructed from 2618 aluminum for strength.
Weighs 325g per piston.
Features a 22mm wrist pin diameter.

This piston set is designed for the BMW S55 3.0L engine. Please verify compatibility with your specific vehicle application.

⚠️ 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

This is a Mahle MS forged piston set designed for the BMW S55 3.0L engine. It features an 84mm bore and a 10.2:1 compression ratio, making it a solid option for engine builds where improved performance is a goal. The piston is constructed from 2618 aluminum, a material known for its strength and ability to handle high temperatures and pressures, which is crucial for boosted or high-performance applications. Each piston weighs 325g, contributing to a balanced rotating assembly. The dimensions include a 32.4mm compression height (CH), a 89.6mm stroke compatibility, a 144.35mm rod length compatibility, and a 22mm wrist pin diameter.

This piston set is sold individually, meaning you'll need to purchase the correct quantity for your specific engine build. The -10.5cc dish volume contributes to the overall compression ratio. It's important to note that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.