Description

The PCM RP026002E Thermostat Kit is a genuine OEM 143°F raw water thermostat designed for Pleasurecraft Marine (PCM) Ford-based inboard engines.

This thermostat regulates coolant flow in raw water cooled systems, maintaining a lower operating temperature compared to closed cooling systems. The 143°F rating is critical for proper operation on older PCM carbureted engines, ensuring correct fuel combustion, preventing overheating, and reducing internal corrosion caused by excessive heat.

This kit includes both the thermostat and gasket, allowing for a complete service replacement. It is specifically designed for early PCM Ford marine engines and provides correct flow characteristics required for raw water cooling systems.

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Key Features

• Genuine PCM / Pleasurecraft Marine OEM part
• 143°F (62°C) temperature rating
• Designed for raw water cooled systems
• Includes thermostat and gasket
• Maintains proper engine operating temperature
• Prevents overheating and thermal imbalance
• Direct OEM replacement

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Engine Compatibility

PCM Ford Marine Engines (Raw Water Cooled)

• Ford 302 (5.0L)
• Ford 351 (5.8L)

Used on PCM inboard engines from approximately:

• 1970s through early 1990s (carbureted engines)

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Important Fitment Notes

• Designed specifically for raw water cooled engines
• Can be replaced with a 160°F thermostat ONLY on carbureted engines
• Do NOT use 143°F on EFI engines (they require higher temp thermostats)

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Specifications

• Part Number: RP026002E
• Temperature Rating: 143°F (62°C)
• Cooling System: Raw water cooled
• Engine Platform: PCM Ford small block
• Type: Thermostat kit (includes gasket)

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What’s Included

• Thermostat
• Gasket (RM0003)

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When This Part Needs Replacement

• Engine overheating or running hot
• Engine not reaching proper temperature
• Temperature fluctuation
• Routine maintenance on older PCM engines

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Installation Notes

• Always install with included gasket
• Verify correct orientation during install
• Clean housing surfaces thoroughly
• Confirm proper operating temp after install

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Alternate / Related Part Numbers

OEM / PCM Options

• RP026002 – 160°F version (newer systems)
• RP026003 – 170°F version

Aftermarket Cross

• Sierra: 18-3671 (143°F replacement)

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Shipping

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

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Parts Desk Insight

143° thermostats are not interchangeable across all PCM engines—if you install the wrong temp (especially on EFI), you’ll get poor performance or engine codes. Always match the cooling system and engine type