do88 BMW M3 E46 Coolant Hoses

Over time, the original rubber cooling hoses on the S54-powered E46 M3 become brittle and can crack or burst, resulting in coolant leaks. do88 developed this kit specifically to replace six OEM hoses across the engine's cooling system with a genuinely more durable silicone alternative, while also improving the look of the engine bay.

These hoses are a stronger alternative to the OEM originals, and in most cases offer better airflow thanks to their smooth inner layer. Built with 3-4 ply polyester fabric reinforcement, compared to the OEM's single-ply construction, the silicone material also withstands high temperatures for considerably longer than the original rubber. Available in colour options, with no difference in performance between them, purely a styling choice.

Please note: you'll need to reuse the original hose connections, and the original hose clamps must be cut off with a hacksaw during installation, a simple job, but worth knowing beforehand. do88 recommends purchasing their matching hose clamp kit (sold separately) at the same time.

Works with: Original hose connections (reused).

Why Choose This Coolant Hose Kit

• 3-4 ply polyester fabric reinforcement, versus the OEM's single-ply rubber construction
• Genuinely resistant to the cracking and brittleness that affects ageing OEM rubber hoses
• Smooth inner layer for improved airflow versus stock in most cases
• Withstands high temperatures for considerably longer than the original rubber
• Complete kit covering six hoses across the cooling system

Compatibility

• BMW M3 E46 (2001-2005, S54B32)

What's Included (with OEM reference numbers)

• Water pump to radiator hose (OEM ref 11537830715)
• Thermostat housing to radiator hose (OEM ref 11537830716)
• Expansion tank to coolant pipe hose (OEM ref 11537830713)
• Engine to water valve hose (OEM ref 64216902678)
• Water valve to heater hose (OEM ref 64216902679)
• Heater to engine hose (OEM ref 64216902680)