The PERRIN Coolant Overflow Tank is an aftermarket coolant reservoir designed to replace the stock plastic overflow tank with a robust, CNC-machined aluminum unit for improved durability and cleaner engine bay aesthetics.
- CNC-machined aluminum construction for strength and long service life
- Approximately 36 cubic-inch capacity suitable for most OEM-style cooling systems
- Integrated lid for simple visual checks and coolant top-offs
- Includes high-quality 5/16 silicone hose (about 55), mounting brackets, hardware, and instructions
- Multiple finish options (black, red, neon yellow, hyper pink) to match various engine bays
- Universal design with versatile mounting hardware for flexible placement
This coolant overflow tank replaces the original plastic part with a more durable metal reservoir, offers a compact design that clears room for performance piping, and comes with everything needed for installation on vehicles that use OEM-style overflow systems.








