As your E46 M3 ages the coolant vent line becomes the weak point of your cooling system.
The plastic design can become brittle due extreme temperature cycling in the engine bay. When you upgrade to the ECS kit, you get a custom billet fitting and a flexible pre-formed silicone hose designed to outlast OEM components in the harsh engine bay environment.
Donít let your stock line leave you on the side of the road, upgrade now before the factory line gives out.
Click HERE for your NEW BMW E46 M3 ECS Exact-Fit Water Pipe Connecting Line