HPS Performance High Temp Reinforced Silicone Radiator Coolant Hose Kit, Blue, 57-2129-BLUE : 1999-2004 Jeep Grand Cherokee 4.0L

HPS High Temp Reinforced Silicone Radiator Coolant Hose Kit

1999–2004 Jeep Grand Cherokee 4.0L

57-2129-BLUE

Overview:

The HPS High Temp Reinforced Silicone Radiator Coolant Hose Kit is a premium replacement solution designed specifically for the 1999–2004 Jeep Grand Cherokee equipped with the 4.0L engine. This kit replaces the original equipment manufacturer (OEM) rubber upper and lower radiator hoses, which are prone to weakening and failure over time due to heat and pressure. Crafted for Jeep enthusiasts and off-roaders alike, this hose kit offers enhanced durability and reliability under a wide range of driving conditions, from daily commuting to demanding off-road adventures.

With its vibrant blue finish, the kit not only improves engine bay aesthetics but also delivers superior performance and longevity compared to stock rubber hoses. The HPS silicone hoses are engineered to withstand extreme temperatures and pressures, ensuring consistent coolant flow and preventing common issues such as hose collapse and leaks.

Key Features:

This hose kit combines advanced materials and thoughtful engineering to provide a robust cooling system upgrade. Key features include:

• Direct replacement for OEM rubber upper and lower radiator hoses, ensuring perfect fitment and easy installation.
• High temperature resistance up to 350°F (177°C), suitable for both daily driving and competitive off-road conditions.
• 3-ply reinforced silicone construction for enhanced durability and flexibility under harsh operating environments.
• Lower radiator hose includes a stainless steel coil insert to prevent hose collapse under negative pressure.
• Includes 100% stainless steel industrial-grade embossed hose clamps that securely fasten hoses without damaging the silicone.
• Engineered to resist cracking, swelling, and deterioration common with OEM rubber hoses.
• Replaces OEM part numbers 52079401AB and 52079406AC for seamless compatibility.
• Vibrant blue color adds a custom look to the engine bay while maintaining high performance.

Construction & Design:

The HPS radiator coolant hoses are constructed from premium-grade silicone reinforced with multiple layers to provide exceptional strength and flexibility. This 3-ply design ensures the hoses maintain their shape and integrity even under extreme heat and pressure fluctuations. The lower radiator hose is uniquely designed with an embedded stainless steel coil insert, which prevents collapse caused by negative pressure during engine operation—a common failure point in stock hoses.

All hoses are precision-engineered with factory-correct bends and dimensions, guaranteeing a direct fit without modifications. The included stainless steel embossed clamps are industrial grade, offering superior clamping force without cutting into the silicone, which extends the overall lifespan of the hose assembly.

Installation & Fitment:

Installation is straightforward and designed to be a direct swap with the original rubber hoses on the 1999–2004 Jeep Grand Cherokee 4.0L models. No special tools or modifications are required, making it an ideal upgrade for DIY enthusiasts and professional mechanics alike. The kit’s precise fitment ensures a hassle-free installation process, restoring the cooling system’s reliability and performance quickly.

What's Included:

• Upper radiator silicone hose
• Lower radiator silicone hose with stainless steel coil insert
• Set of 100% stainless steel industrial-grade embossed hose clamps
• Installation instructions

Ideal For:

This HPS silicone radiator hose kit is ideal for Jeep Grand Cherokee owners seeking a durable and reliable cooling system upgrade. It is especially suited for those who drive in demanding conditions such as off-roading, towing, or high-temperature environments where OEM rubber hoses are prone to premature failure. Additionally, enthusiasts looking to enhance their engine bay appearance with a high-quality blue silicone hose will appreciate this kit’s combination of form and function.