What is the purpose of the ArmorGlide skirt coating?

The ArmorGlide skirt coating on these Wiseco pistons is designed to reduce friction between the piston skirt and cylinder wall. This helps prevent seizure, especially under high heat and load, and also contributes to quieter engine operation.

Are these pistons suitable for a naturally aspirated engine build?

These pistons are specifically designed for a turbo application with an 8.0:1 compression ratio. While they might function in a naturally aspirated engine, this lower compression ratio is not optimal for naturally aspirated performance and would likely result in reduced power output compared to a higher compression piston.

What does '+0.50 Oversized' mean for these pistons?

The '+0.50 Oversized' designation means these pistons are 0.020 inches larger in diameter than the standard bore size for the S14B23 engine. This size is typically used when the engine cylinders have been bored out to accommodate wear or to increase displacement.

Wiseco BMW S14B23 3.0L 24V Turbo 94.50MM Bore +0.50 Oversized 8.0:1 CR Pistons

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Specifications

Brand: Wiseco
Part #: KE112M945
UPC: 193564090843

Wiseco BMW S14B23 3.0L 24V Turbo 94.50MM Bore +0.50 Oversized 8.0:1 CR Pistons

Name: Wiseco BMW S14B23 3.0L 24V Turbo 94.50MM Bore +0.50 Oversized 8.0:1 CR Pistons
Brand: Wiseco
Price: 802.99 USD
Availability: InStock

$802.99

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Fits 1988-1991 BMW M3. Wiseco forged pistons for S14B23 engines, 94.50mm bore, 8.0:1 CR. Built for severe duty race builds.

Key Features

Fits 1988-1991 BMW M3.
Forged from 2618 aluminum for improved tensile strength.
94.50mm bore size is +0.50mm oversized for engine rebuilding.
8.0:1 compression ratio is suitable for turbo applications.
Features precision ring grooves, anti-detonation grooves, and improved ring seal.
ArmorGlide skirt coating reduces friction, resists seizure, and quiets operation.

⚠️ 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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Fits this vehicle

BMW M3 1988-1991

Product Details

Starting with a 2618 aluminum forging, these Wiseco pistons are built for the demanding S14B23 engine in your 1988-1991 BMW M3. The 94.50mm bore size is a +0.50mm overbore from stock, intended for engines that may have been previously machined or are being rebuilt to a larger displacement. This set is designed for a turbo application, with a compression ratio of 8.0:1, which is well-suited for boosted engines to help prevent detonation.

Wiseco machines these pistons in the USA, paying close attention to details like precision ring grooves, anti-detonation grooves, and features that improve ring seal. The crown is fully machined, and they incorporate forced pin oiling to ensure the wrist pins stay well-lubricated under high stress. A notable feature is the ArmorGlide skirt coating, which helps reduce friction, resist seizure, and contribute to quieter operation. These are intended for heavy to severe duty race builds where durability and performance are critical.

This set includes four pistons, designed to fit the European S14B23 engine. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.