Genuine Toyota Coolant Hoses & Water Pipes

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What is a Toyota Water Pipe / Hose?

A Toyota water pipe (also called coolant pipe, water rail or hard-line) is a rigid aluminium, steel or composite tube that routes coolant between the engine block, cylinder head, heater core, turbocharger and radiator. Sealed by genuine O-rings or quick-connect collars, these pipes withstand extreme heat cycles, vibration and corrosion while maintaining Toyota-spec flow rates and leak integrity.

When to Replace a Water Pipe / Hose

Replace the water pipe whenever you observe:

  • Coolant seepage or white crust around O-ring joints or banjo bolts.
  • Moisture inside the hard-line insulation sleeve—a sign of pin-hole corrosion.
  • Heat-blistered or cracked plastic sections on composite pipes (common on 2GR-FE, 1NR-FE).
  • Major engine repair (head-gasket, turbo, timing cover) where pipe removal is required—re-installing old O-rings often leads to come-backs.
  • Toyota service bulletin specifies revised part number for improved corrosion resistance.

Recommendation: Always fit a genuine Toyota water hose. Factory-exact bends eliminate stress points, CNC-machined flanges guarantee flat sealing surfaces, and Toyota-grade O-rings resist the chemical additives found in Super Long-Life Coolant (SLLC) for 150,000 km+ service life.

Explore Our Range – Genuine Toyota Water Pipes & Hoses

Nunawading Toyota Parts stocks complete water pipe assemblies for every major Toyota platform: Camry, Corolla, Yaris, RAV4, Kluger, C-HR, HiLux, Prado, LandCruiser and more.

Can’t locate the exact pipe online? Send us your VIN or engine number—our parts specialists can source any Toyota water pipe nationwide.