Sierra 18-3587-1 Raw Water Circulating Pump

The Sierra 18-3587-1 is a replacement raw water circulating pump designed for marine inboard engines. This pump circulates cooling water through the engine block to maintain optimal operating temperatures, making it a critical component for engine reliability and longevity.

Key Features:

• Direct replacement for Indmar 685001 and Pleasurecraft RA057024
• Engineered to OEM specifications for reliable performance
• Designed for freshwater and saltwater applications
• Precision-machined components for proper flow and pressure
• Durable construction for long service life in marine environments

OEM Cross-References:

• Indmar: 685001
• Pleasurecraft (PCM): RA057024

Sierra Marine is a trusted name in marine replacement parts, offering quality components that meet or exceed original equipment specifications. Regular maintenance and timely replacement of the raw water pump helps prevent overheating and costly engine damage.