Part Number: RO45160
PCM R045160 Raw Water Pump & Thermostat Hose
Maintain dependable cooling system performance with the PCM R045160 Raw Water Pump & Thermostat Hose. Designed as a genuine OEM replacement, this molded marine hose connects the raw water pump to the thermostat housing, helping maintain proper water circulation and engine temperature control.
The cooling system hose between the raw water pump and thermostat housing plays a critical role in regulating water flow through the engine. Over time, marine hoses can become brittle, cracked, swollen, or weakened from constant exposure to heat, vibration, pressure, and moisture inside the engine compartment. Replacing worn cooling hoses helps prevent leaks, maintain efficient water circulation, and reduce the risk of overheating-related engine damage.
Manufactured to PCM factory specifications, the R045160 hose is built using durable marine-grade rubber designed for long-term reliability in both freshwater and saltwater applications. Its molded design provides precise routing and helps reduce hose kinking or flow restriction in tight marine engine compartments.
Common Engine & Boat Fitments
The PCM R045160 raw water pump & thermostat hose is commonly used on select PCM marine engines, including:
- PCM Excalibur 5.7L
- PCM ZR409
- PCM ZR450
- PCM 5.0L MPI
- PCM 6.0L applications
- Select PCM Ford-based engine packages
These engines are frequently found in:
Nautique Models
- Super Air Nautique 210
- Super Air Nautique 230
- Nautique G21
- Nautique G23
- Ski Nautique 200
Other Common Applications
- Correct Craft towboats
- Air Nautique wake boats
- Nautique surf boats equipped with PCM engines
The R045160 hose is commonly used in PCM cooling systems where maintaining proper water flow between the raw water pump and thermostat housing is essential for consistent engine cooling and reliable performance.
Fitment may vary depending on engine serial number and cooling system configuration, so confirming compatibility with part number R045160 before ordering is recommended.
Key Features
- Genuine PCM OEM cooling system hose
- Connects raw water pump to thermostat housing
- Molded design for precise fitment and routing
- Designed for marine cooling system applications
- Marine-grade rubber construction for durability and long service life
- Helps maintain proper cooling water circulation
- Direct-fit replacement for straightforward installation
Why Replace Marine Cooling Hoses?
A deteriorated hose can leak, collapse, or restrict water flow, reducing cooling system efficiency and increasing the risk of overheating. Replacing aging cooling system hoses helps maintain dependable engine temperatures and reliable on-water performance.
If you’re servicing a PCM-powered Nautique or Correct Craft boat, the R045160 raw water pump & thermostat hose delivers the OEM-quality fit and durability your cooling system depends on.