BMW 4-Series Radiator (RAD) - OEM & Used Parts
Find quality BMW 4-Series radiator (also known as RAD) parts at unbeatable prices. Save 50-70% compared to dealership prices.
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About the BMW 4-Series Radiator (RAD)
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. The Radiator (also known as RAD) is a critical component for your BMW 4-Series.
Signs of Failure
Know when your 4-Series radiator needs replacement:
- 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.
BMW 4-Series Radiator Price Comparison
Used Parts
$50-$150
- 50-70% savings
- OEM quality
- Tested & verified
- Warranty available
Aftermarket
$100-$300
- Brand new
- Various brands
- Good warranty
- Easy availability
OEM New
$200-$500
- Factory exact
- Best warranty
- Guaranteed fit
- Highest quality
Where to Buy BMW 4-Series Radiator Parts
Online Sellers
Shop eBay and online sellers for 4-Series radiator parts with fast shipping nationwide.
Shop OnlineLocal Scrapyards
Find professional salvage yards near you with tested 4-Series radiator parts and warranties.
Find ScrapyardsDIY Junkyards
Pull your own 4-Series radiator at self-service junkyards for maximum savings.
Find JunkyardsBMW 4-Series Radiator - FAQ
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