Our radiators are constructed of materials that provide better heat dissipation than the factory units. Additionally, our radiators do not become weak or brittle due to constant temperature cycling. Glass reinforced nylon, as used by OE manufacturers, will eventually deteriorate resulting in a cracked or broken radiator neck. This failure has become more common due to the increased temperatures in the current generation of BMW engines. The normal operating temperature of a Double Vanos engine is around 110° C (230° F). Unfortunately, there is no way to tell what the real temperature is in the engine without special equipment. According to the BMW WDS, the instrument cluster temperature display will read normal between 75°-113° C (167°-235.4° F). Nylon just doesn’t hold up under these conditions.
Lifetime Warranty!
Zionsville Autosport guarantees our radiators for life to the original purchaser. Purchaser must provide proof of BMW coolant use at first installation and once every two years thereafter.
Made in the USA with Euro Aluminum Cores.
SPECS
• Better Heat Dissipating Materials
• Repairable All Alloy Construction
• Greatly Increased Life-Span
• Hand Welded, No Epoxy
• Impact Resistant
• Aluminum Core
• Accepts All Original Equipment
• Tested at 4X Operating Pressure
• Made in the USA
FITMENT
2000-06 X5 4.4i, 2002-03 X5 4.6is, 2004-06 4.8is
Replaces BMW part # 17 10 1 439 101
