Part Number: 845040
Indmar 845040 J Formed Hose w/ Spring
Maintain reliable cooling system performance with the Indmar 845040 J Formed Hose w/ Spring. Designed as a genuine OEM replacement, this molded marine hose is engineered to provide proper coolant and raw water flow in tight engine compartment applications where precise routing and hose integrity are critical.
The J-shaped formed design allows the hose to fit specific cooling system layouts without kinking or restricting water flow. An internal support spring helps prevent hose collapse under suction conditions, especially in high-demand raw water cooling systems. Over time, marine hoses can become soft, brittle, cracked, or weakened from heat, vibration, moisture, and prolonged exposure to engine fluids. Replacing worn cooling hoses helps maintain dependable water circulation and reduces the risk of leaks or overheating issues.
Manufactured to Indmar factory specifications, the 845040 hose is built using durable marine-grade rubber designed for long-term reliability in demanding freshwater and saltwater environments. Designed as a direct-fit replacement, it provides dependable fitment and straightforward installation for compatible Indmar cooling systems.
Common Engine & Boat Fitments
The Indmar 845040 J formed hose with spring is commonly used on select Indmar marine engine cooling systems, including:
- Indmar Assault 5.7L
- Indmar Monsoon 325
- Indmar Monsoon 340
- Indmar Raptor 6.2L
- Indmar Raptor 6.2L Supercharged
- Indmar 6.0L MPI applications
These engines are frequently found in:
Supra Models
- Supra SA
- Supra SL
- Supra SE
- Supra SR
- Supra Sunsport series
Moomba Models
- Moomba Mojo
- Moomba Kaiyen
- Moomba Makai
- Moomba Max
- Moomba Craz
Additional applications may include Malibu and MasterCraft boats equipped with compatible Indmar engine packages.
The 845040 hose is commonly used in raw water and engine cooling systems where maintaining unrestricted water circulation and preventing hose collapse are essential for proper engine temperature control.
Fitment may vary depending on engine serial number and cooling system configuration, so confirming compatibility with part number 845040 before ordering is recommended.
Key Features
- Genuine Indmar OEM formed cooling hose
- J-shaped molded design for precise factory fitment
- Internal spring support helps prevent hose collapse
- Designed for marine cooling and raw water circulation systems
- Marine-grade rubber construction for durability and long service life
- Helps maintain reliable cooling system water flow
- Direct-fit replacement for straightforward installation
Why Replace Marine Cooling Hoses?
A deteriorated hose can lead to leaks, restricted water flow, or hose collapse under suction, increasing the risk of overheating and cooling system failure. Replacing aging hoses helps maintain dependable engine temperatures and reliable on-water performance.
If you’re servicing an Indmar-powered Supra, Moomba, Malibu, or MasterCraft, the 845040 J formed hose with spring delivers the OEM-quality fit and durability your cooling system depends on.