Description

Mercury / MerCruiser Quicksilver Power Steering Pump Pulley — 8M0150723

The Mercury Quicksilver 8M0150723 is a genuine OEM power steering pump pulley used on many MerCruiser sterndrive engines. This pulley is driven by the engine’s serpentine belt system, transferring rotational power from the crankshaft to the power steering pump, allowing smooth steering operation.

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Key Specifications

• Part Number: 8M0150723

• Type: Power steering pump pulley

• Drive System: Serpentine belt

• Material: Marine-grade steel

• Diameter: approx. 5-3/4 in (146 mm)

• OEM Brand: Mercury Marine / Quicksilver

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Compatible Engines

Commonly used on MerCruiser sterndrive engines with serpentine belt systems, including:

• 4.3L V6

• 5.0L V8

• 5.7L V8

• 6.2L V8

• 7.4L V8

• 8.2L V8

Typical applications span engines produced approximately 1996–2014 depending on configuration.

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Superseded / Cross-Reference Numbers

This pulley may also appear under several equivalent numbers:

• 861578 (earlier MerCruiser part number)

• Sierra 18-8297 (aftermarket equivalent)

• 807731T (cross reference)

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Function in the Engine

The pulley is mounted to the power steering pump shaft and allows the serpentine belt to:

• Spin the power steering pump

• Maintain proper hydraulic pressure for steering

• Keep the belt system aligned with other accessories

A worn or damaged pulley can cause belt squeal, belt misalignment, or premature belt wear.

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Fitment Tip:
Always verify compatibility using the engine serial number. MerCruiser engines with the same displacement can use different accessory layouts depending on the model year and cooling configuration.

Shipping: Ships same or next day for fast Canada wide shipping.