URO BMW Coolant Expansion Tanks for BMW 5 Series E34 (1987-1995)

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On certain models, namely E36, E46, and E90, the factory BMW expansion tank is prone to either breaking at connection points or blowing apart altogether. If you're starting to feel like your expansion tank is on borrowed time, it's probably time to replace with either a direct OE replacement, or strengthen your cooling setup with an aluminum expansion tank - we offer numerous performance upgrades for your expansion tank. Especially if you're someone who likes to track your BMW, we recommend upgrading your expansion tank to avoid ruining your track day.
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Expansion Tank Hose
Expansion Tank Hose
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T#:373093
Part#: 11531711002
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$ 41.99 USD
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$ 41.99 USD
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Connects between the thermostat and the lower expansion tank then to the heater core
Coolant Hose
Coolant Hose
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T#:373098
Part#: 64218390710
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$ 21.99 USD
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$ 21.99 USD
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Connects to coolant recovery tank
URO Coolant Expansion Tank - BMW E30 E36 Z3 M42 M44, E34 325
URO Coolant Expansion Tank - BMW E30 E36 Z3 M42 M44, E34 325 ...
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T#:362008
Part#: 17111712835
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$ 18.99 USD
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$ 18.99 USD
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The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break
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URO Expansion Tank Cap - BMW E30
URO Expansion Tank Cap - BMW E30
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T#:592118
Part#: 17111468077
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$ 6.99 USD
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$ 6.99 USD
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URO Expansion Tank Cap - BMW E30

The URO Expansion Tank Cap - BMW E30 is a crucial component for maintaining optimal cooling system performance by ensuring proper pressure regulation. Over time, older radiator caps lose their ability to hold pressure, leading to a lower boiling point and potential overheating issues. This high-quality replacement cap is designed to restore factory pressure levels, preventing coolant loss and maintaining engine efficiency. Crafted from durable materials, it resists wear and temperature fluctuations, ensuring long-lasting reliability.

  • Direct replacement for BMW E30 models
  • Maintains correct cooling system pressure to prevent overheating
  • Helps sustain optimal engine temperature and performance
  • High-quality construction for durability and reliability
  • Prevents coolant evaporation and system inefficiencies
  • Easy installation with OE-style fitment
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