2004 BMW M3 Radiator
Find quality radiator parts for your 2004 BMW M3. Compare prices from multiple sellers.
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About the Radiator
The radiator is the primary heat exchanger in your vehicle's cooling system, responsible for dissipating engine heat into the atmosphere. Hot coolant from the engine flows through the radiator's tubes while air passes over the fins, transferring heat away. A failed or leaking radiator leads to engine overheating, which can cause catastrophic engine damage.
Signs of Failure
- Engine overheating
- Coolant leaks under the vehicle
- Low coolant level
- Discolored or rusty coolant
- Steam coming from under the hood
- Temperature gauge running hot
- Sweet antifreeze smell
- Visible damage or corrosion on radiator
Replacement Info
Radiator replacement is a moderate DIY job. The process involves: draining the cooling system, disconnecting upper and lower hoses, disconnecting transmission cooler lines (if equipped), removing the cooling fan assembly or shroud, unbolting the radiator mounting brackets, and lifting out the old radiator. Installation is the reverse, followed by refilling with fresh coolant and bleeding air from the system. Most replacements take 2-3 hours. Ensure you properly dispose of old coolant and use the correct coolant type for your vehicle.