High Performance Cooling System Upgrade - E9X 335i N54 w/ Manual Transmission

If you plan to drive your BMW aggressively on the track, it is important that you upgrade your cooling system to avoid overheating. To ensure your BMW keeps cool on the track, we have built out our new High Performance Cooling System Upgrade kits. Featured in this kit is everything you will need to redo your cooling system from top to bottom with OEM components, with select stock components swapped out for the high performance alternative! This kit includes a high performance CSF Aluminum Radiator for significantly better cooling than the stock radiator and full aluminum construction that won't crack from long term heat cycling, and a Mishimoto Performance 74*C thermostat for lower temperature operation and increased cooling of the engine. 

Additional items included in this kit:

  • OEM Replacement Coolant Hoses
  • ECS Tuning Silicone Coolant Outlet Hose with ECS Billet Thermostat Hose Adapter
  • ECS Tuning Aluminized Water Pump Hose
  • OEM Expansion Tank, Cap, and Level Sensor
  • OEM Belts, Tensioners, and Pulleys
  • OEM Auxiliary Fan Switch
  • OEM VDO Water Pump
  • Genuine BMW Hardware for Easy Installation
  • Genuine BMW Antifreeze/Coolant (Undiluted) - 2 Gallons
T#: 557323 | Part#: E9XN54PCKT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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2099.88
SALE: $2099.88 (3% OFF)
WAS: $2160.99 on 05-03-2026

This product was last offered at the strikethrough price on
05-03-2026

Partial Replacement
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Lifetime Replacement Program! Read more here
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High Performance Cooling System Upgrade - E9X 335i N54 w/ Manual Transmission
$2099.88