Moroso 63797 Aluminum Coolant Expansion Tank for 2005-11 Lotus Elise/Exige

Vehicle Fitment

• 2005-2011 Lotus Elise / Lotus Exige (all trims) - direct bolt-in replacement for stock plastic tank.

Features

• Fabricated aluminum construction provides superior heat resistance and structural integrity compared to stock plastic tanks.
• Polishable/corrosion-resistant finish allows for custom styling or race-look presentation.
• Billet aluminum radiator neck included for secure, leak-free connection to the coolant system.
• Integrated sight tube enables quick visual coolant level checks during hot/cold conditions.
• Manual bleed valve allows removal of trapped air during coolant system service or bleeding.
• Dual hose-barb inlets (1/4" NPT) facilitate flexible plumbing for stock or aftermarket setups.
• Increased durability and longevity under high heat, track use or forced-induction conditions.
• Designed for direct replacement - retains factory mounting points and hose routing for simplified installation.

Specifications

• Part Number: 63797
• Material: Fabricated aluminum tank including billet neck and fittings
• Finish: Natural aluminum (polishable or custom-finish)
• Hose Inlets: Dual ¼-inch NPT hose barbs
• Application: 2005-2011 Lotus Elise / Exige

Included Components

• 1 x Aluminum coolant expansion tank assembly (63797)
• Billet aluminum radiator neck and cap fitting
• Sight tube pre-installed
• Manual bleed valve pre-installed
• Instructions for installation on specified vehicle models

Product Description

The Moroso 63797 Aluminum Coolant Expansion Tank is engineered specifically for 2005-2011 Lotus Elise and Exige models, offering a direct replacement for the original plastic unit. Its robust aluminum construction, billet neck, integrated sight tube and bleed valve deliver both functional and aesthetic upgrades for road, track or performance use.

Ideal for situations where the factory tank may weaken or fail under elevated temperature conditions, aftermarket forced-induction setups or track use, this tank enhances coolant system reliability while adding high-quality appearance. Installation is straightforward, as it retains original mounting points and hose routing.

Before purchasing, verify that your vehicle falls within the 2005-2011 Lotus Elise/Exige range and check that mounting space, hose connections and clearance are suitable for this aluminum tank. While the tank is designed for these years, always confirm compatibility with your specific configuration and any aftermarket modifications.