Description

The PCM RP061017 Impeller Kit is a genuine OEM raw water pump service kit designed for Pleasurecraft Marine (PCM) and Crusader inboard engines equipped with crank-driven V-belt raw water pumps. This kit includes a precision-molded impeller along with sealing components to restore proper cooling system performance and ensure reliable engine operation.

The impeller is responsible for drawing cooling water into the engine and circulating it through the cooling system. Over time, the rubber vanes can wear, harden, or break down, reducing water flow and increasing the risk of overheating. Replacing the impeller at regular intervals helps maintain consistent cooling and protects your engine from costly damage.

This impeller is commonly found on pre-2004 PCM GM-based engines, making it a critical maintenance item for older inboard applications.

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Key Features

• Genuine PCM OEM impeller kit
• Marine-grade neoprene rubber construction
• Keyed shaft design for secure fitment
• Restores proper raw water flow and cooling performance
• Includes gasket and O-ring (varies by kit version)
• Designed for V-belt driven pump systems

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Engine Compatibility

PCM Engines (Pre-2004 – V-Belt Systems)

• 5.0L
• 5.7L
• 7.4L
• 8.1L
• 8.2L

Crusader Engines

• GM-based V8 engines (5.7L, 7.4L, 8.1L)

Commonly used on crank-driven V-belt raw water pump systems

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Serial Number Fitment Notice

Fitment depends on:

• Engine model and year
• Pump type (V-belt vs serpentine)
• Engine serial number

Important Fitment Note:

• Fits pre-2004 V-belt driven pumps only
• Will NOT fit 2004+ serpentine belt systems

Always confirm compatibility using your engine serial number and pump type before ordering.

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Impeller Specifications

• Diameter: 2-5/8″ (≈65 mm)
• Width: 1-5/8″ (≈41 mm)
• Shaft: Keyed shaft design
• Blade Count: Typically 10–12 blades depending on manufacturer

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What’s Included in the Kit

• Impeller
• Pump cover gasket
• O-ring (varies by version)

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When This Part Needs Replacement

Replace the impeller if you notice:

• Reduced or no cooling water flow
• Engine overheating
• Cracked, missing, or stiff vanes
• Reduced performance under load
• After seasonal storage

Recommended service interval: every 100 hours or annually

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Installation Notes

• Lubricate impeller before installation
• Install with correct vane direction
• Replace gasket and O-ring
• Inspect pump housing and wear surfaces
• Check system for broken vane debris

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Alternate / Superseded Part Numbers

OEM Cross References

• PCM: RP061017
• Crusader: R061017

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Aftermarket Cross References

• Sherwood: 10615K
• Sierra: 18-8926 (verify fitment)
• Mallory: 9-45718

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Shipping

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

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Parts Desk Insight

This is one of the most common PCM impellers—but only for older V-belt systems. If your engine has a serpentine belt, this will not fit.

Quick check: multiple V-belts = this impeller