Moroso Coolant Expansion Tank for BMW E46 M3 01-06 Direct Bolt-In Replacement

Moroso Coolant Expansion Tank for BMW E46 M3 (2001–2006) — Direct Bolt-In Replacement Brand: MOROSO Upgrade your E46 M3 cooling system with the Moroso coolant expansion tank — a precision, direct bolt-in replacement engineered for 2001–2006 BMW E46 M3 models. Built for durability and perfect fitment, this tank restores proper coolant capacity and pressure control while resisting heat, vibration, and cracking. Direct bolt-in fit: No modifications required — installs using factory mounting points and hoses. Durable construction: High-quality materials resist thermal expansion, coolant chemical exposure, and track use. Reliable cooling performance: Maintains correct coolant level and system pressure for consistent engine temperature control. OEM-style appearance: Matches original tank dimensions and mounting for a factory look under the hood. Ideal for restoration, maintenance, or upgraded cooling systems. Replace a cracked, leaking, or discolored OEM tank with a long-lasting Moroso unit designed specifically for BMW E46 M3 (01–06). Note: Includes tank only; cap and sensors may require transfer from original unit. Verify part compatibility with your vehicle VIN.