Part Number: 495002
Indmar 495002 Thermostat Kit
Maintain proper engine temperature and dependable cooling system performance with the Indmar 495002 Thermostat Kit. Designed as a genuine OEM replacement, this complete thermostat service kit helps regulate coolant flow and ensures your marine engine operates at the correct temperature under varying load conditions.
The thermostat is a critical part of the cooling system, controlling when coolant circulates through the engine. A worn or sticking thermostat can lead to overheating, inconsistent temperature readings, poor fuel efficiency, or slow engine warm-up. Replacing the thermostat and sealing components together helps restore reliable cooling system operation and protects vital engine components from excessive heat.
Built to Indmar factory specifications, the 495002 thermostat kit is engineered for long-term durability in harsh marine environments. Designed as a direct-fit service replacement, it simplifies routine maintenance and delivers dependable performance for compatible inboard engines.
Common Engine Fitments
The Indmar 495002 thermostat kit is commonly used on select Indmar marine engines, including:
- Indmar Assault 5.7L
- Indmar Monsoon 340
- Indmar 6.0L MPI
- Indmar 6.2L engine platforms
- Indmar Raptor 400
- Indmar Raptor 440
- Select Indmar Raptor 575 applications
These engines are frequently found in:
- Supra SA, SL, SE, and SR models
- Supra Launch series
- Moomba Mojo, Max, and Kaiyen
- Moomba Makai and Craz
- Malibu models equipped with Indmar power
- MasterCraft boats with compatible Indmar engines
The 495002 thermostat kit is commonly used in both freshwater-cooled and closed-cooling engine systems where maintaining stable operating temperature is essential for performance and reliability.
Fitment may vary depending on engine serial number and cooling system configuration, so confirming compatibility with part number 495002 before ordering is recommended.
Typical Kit Contents
Depending on production revision, the kit may include:
- Marine thermostat
- Thermostat gasket or seal
- O-rings or sealing components
- Related installation hardware
Contents may vary slightly by production batch.
Key Features
- Genuine Indmar OEM thermostat kit
- Helps maintain proper engine operating temperature
- Restores dependable coolant circulation and cooling efficiency
- Designed for GM-based and Raptor Indmar engines
- Marine-grade components built for durability
- Direct-fit replacement for straightforward installation
Why Replace a Thermostat Kit?
Over time, thermostats can stick or lose accuracy due to repeated heat cycles and corrosion exposure. Replacing the thermostat and sealing components together helps prevent coolant leaks, maintain stable engine temperatures, and reduce the risk of overheating-related engine damage.
If you’re servicing an Indmar-powered Supra, Moomba, Malibu, or MasterCraft, the 495002 thermostat kit delivers the OEM-quality fit and dependable cooling performance your engine was designed for.