Mackay Automotive Engine Cooling System Heater Hose – CH1645

Upgrade your vehicle’s cooling system with the Mackay CH1645 Heater Hose, a premium quality, OE-spec replacement designed to deliver exceptional performance and reliability. Proudly manufactured in Australia using high-grade EPDM rubber, this heater hose is engineered to withstand the toughest conditions, ensuring long-lasting durability and superior coolant flow.

Key Features:

• Premium Construction: Made from heat, water, and ozone-resistant EPDM rubber, expertly formulated to resist electrochemical degradation (ECD), ensuring extended service life.
• Reinforced Strength: Embedded Aramid/Rayon lockstitch reinforcement provides superior durability and resistance to wear and pressure.
• Precision Fit & Performance: Designed and tested to meet or exceed SAE J20R3 Type EC Class D-1 and Class D-2 radiator hose specifications, guaranteeing a reliable and secure fit.
• Temperature Range: Operates efficiently between -40°C and 125°C to handle extreme engine conditions.
• dimensions: 14mm inside diameter and 600mm length, ideal for specific heater bypass applications.
• Application: Suitable exclusively for water and coolant systems; not rated for fuel, oil, or brake fluid.

Vehicle Fitment:

• Fits:
• HSV Commodore VN 3.8L LG2 (LN3) Heater Bypass
• HSV LS VG 3.8L Heater Bypass

• NOT compatible with:
• HSV Commodore VN 3.8L LG2 (L27)

Why Choose Mackay?

With over 85 years of heritage in Australian automotive manufacturing, Mackay has been a trusted name from the first Australian-made Holden FX in 1948 through to the VF Holden in 2017. Mackay products are synonymous with uncompromising quality, innovation, and Australian engineering excellence—exported worldwide and revered by professionals and enthusiasts alike.

Ensure optimal engine cooling and protection with the Mackay CH1645 Heater Hose – a genuine solution built to last. Order now for durable performance and peace of mind on the road.