Part Number: 605021
Indmar 605021 Nylon Elbow Fitting – 3/4" x 5/8"
Keep your marine cooling system operating efficiently with the Indmar 605021 Nylon Elbow Fitting – 3/4" x 5/8". Designed as a genuine OEM replacement, this elbow fitting provides a secure connection for cooling system hoses and helps maintain proper water circulation throughout the engine.
Cooling system fittings are exposed to constant heat, vibration, pressure, and moisture inside the engine compartment. Over time, fittings can become brittle, cracked, or damaged, leading to leaks or restricted water flow. Replacing worn components helps maintain cooling system efficiency and protects your engine from overheating-related issues.
Manufactured to Indmar factory specifications, the 605021 nylon elbow fitting is built from durable marine-grade nylon designed for long-term reliability and corrosion resistance. The angled elbow design helps improve hose routing in tight spaces while supporting smooth water flow through the cooling system.
Common Engine & Boat Fitments
The Indmar 605021 nylon elbow fitting is commonly used on select Indmar marine engine cooling systems, including:
- Indmar Assault 5.7L
- Indmar Monsoon 325
- Indmar Monsoon 340
- Indmar Assault 325
- Indmar 5.0L MPI
- Indmar 5.7L MPI
- Indmar Raptor 6.2L applications
These engines are frequently found in:
Supra Models
- Supra Launch 20SSV
- Supra Launch 21V
- Supra SA
- Supra SL
- Supra SE
Moomba Models
- Moomba Mobius LSV
- Moomba Mojo
- Moomba Kaiyen
- Moomba Makai
- Moomba Max
Additional applications may include Malibu and MasterCraft boats equipped with compatible Indmar engine packages.
The 605021 fitting is commonly used in raw water and engine cooling hose systems where proper routing and leak-free connections are essential for dependable engine performance.
Fitment may vary depending on engine serial number and cooling system configuration, so confirming compatibility with part number 605021 before ordering is recommended.
Key Features
- Genuine Indmar OEM nylon elbow fitting
- 3/4" x 5/8" sizing for compatible hose applications
- Angled design for efficient hose routing
- Designed for marine cooling system applications
- Marine-grade nylon construction for corrosion resistance and durability
- Helps maintain reliable water circulation and leak-free performance
- Direct-fit replacement for straightforward installation
Why Replace Cooling System Fittings?
A damaged fitting can lead to coolant leaks, poor water circulation, or unnecessary strain on cooling system components. Replacing aging fittings helps maintain proper engine temperatures and dependable on-water reliability.
If you’re servicing an Indmar-powered Supra, Moomba, Malibu, or MasterCraft, the 605021 nylon elbow fitting delivers the OEM-quality fit and durability your cooling system depends on.