This upgraded silicone engine coolant hose is designed specifically for BMW N52 engines, replacing the factory rubber hose that is known to harden, crack, and fail over time. Coolant hose failure is a common issue on aging N52 platforms and can lead to overheating, coolant loss, and engine damage.

Built using a reinforced multi-layer silicone construction, this hose delivers superior heat resistance, flexibility, and long-term reliability while maintaining a clean, performance-focused engine bay appearance.

Key Benefits

• Resists cracking, swelling, and heat degradation
• Maintains flexibility over long service life
• Handles higher temperatures and pressures than factory rubber hoses
• Direct replacement for the factory coolant hose

Construction & Design

• Triple-layer reinforced silicone construction
• Improved heat and pressure resistance
• Precision molded for factory-style fitment
• Clean, high-quality finish for an upgraded engine bay look

Installation Location

• Thermostat housing to water pump

Fitment – BMW N52 Engines

• 1 Series E81 / E87 – 130i (2006–2011)
• 1 Series E82 / E88 – 125i / 128i (2006–2013)
• 3 Series E90 / E91 / E92 / E93 – 323i / 325i / 328i / 330i (2005–2011)
• 5 Series E60 / E61 – 525i / 530i (2006–2009)
• X1 E84 – 25ix / 28ix (2009–2011)
• X3 E83 – 3.0i / 3.0si (2006–2010)
• X5 E70 – 3.0si (2006–2010)
• Z4 E85 / E86 – 3.0i / 3.0si (2004–2008)
• Z4 E89 – 30i (2009–2012)

Replaces Factory Part Number

• 11537521049

This silicone coolant hose is an ideal preventative upgrade for daily-driven and performance-oriented N52 vehicles, offering improved durability, reliability, and peace of mind compared to aging factory rubber components.