Mackay Upper Radiator Hose for Isuzu NPR300 4.6L 4HG1 & 4HG1-T Diesel Engines

Ensure top performance and reliability with the Mackay Upper Radiator Hose, expertly engineered as a direct OE replacement for select Isuzu diesel commercial vehicles. Designed for the Isuzu NPR300 series 4.6L 4HG1 and 4HG1-T 8v Diesel engines (model years 1998-2003), this hose is the perfect solution to maintain your vehicle’s cooling system integrity.

Premium Quality & Durability

Crafted from high-quality EPDM rubber, this radiator hose offers excellent resistance to heat, water, and ozone. It features an embedded Aramid/Rayon lockstitch reinforcement that enhances structural strength and durability. Formulated to resist electrochemical degradation (ECD), the hose withstands harsh chemical exposure and extreme temperatures, delivering maximum burst protection and long-lasting performance under demanding operating conditions.

Perfect Fitment for Specific Isuzu Models

• Fits Isuzu NPR300 4.6L 4HG1 8v Diesel (NPR71 manual and automatic, 85kW) from 01/1998 to 12/2003
• Fits Isuzu NPR300 4.6L 4HG1-T 8v Diesel I/C Turbo (NPR71 manual and automatic, 89kW) from 01/2000 to 12/2003

Position: Upper radiator hose

Important: This product does NOT fit Isuzu NPR300 4.6L 4HV1 16v CNG MPFI NPR82 MT/AMT 96kW vehicles.

Product Specifications

• Product Type: Radiator Hose (Upper/Top Position)
• Material: EPDM Rubber with Aramid/Rayon Lockstitch Reinforcement
• Inside Diameter: 36 mm (both ends)
• Hose Length: 340 mm
• Fuel Type Compatibility: Diesel
• Condition: Brand New

Why Choose Mackay?

With over 85 years of Australian automotive manufacturing excellence, Mackay is synonymous with innovation and quality. Mackay pioneered rubber-to-metal bonding in Australia and has proudly supplied components for iconic vehicles from the FX Holden (1948) to the VF Holden (2017). Manufactured in Melbourne and exported worldwide, Mackay products stand out for their uncompromising quality and durability — qualities you can trust to keep your vehicle running smoothly.

Upgrade your Isuzu diesel vehicle’s cooling system with the Mackay Upper Radiator Hose — engineered for endurance, built for performance. Order now to enjoy reliable cooling system operation and peace of mind on every journey!