HPS Performance High Temp Reinforced Silicone Radiator Coolant Hose Kit, Black, 57-2129-BLK : 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-BLK

Overview:

The HPS High Temp Reinforced Silicone Radiator Coolant Hose Kit is a premium replacement solution designed specifically for the 1999 to 2004 Jeep Grand Cherokee 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 durability and reliability, this hose kit is ideal for Jeep owners seeking a long-lasting upgrade that can withstand the demanding conditions of daily driving as well as off-road competition.

Engineered with high-quality silicone and reinforced construction, the hoses maintain their integrity under extreme temperatures and pressures, ensuring consistent coolant flow and preventing common issues such as hose collapse. This kit offers a direct fit replacement with all the correct bends and dimensions, making installation straightforward and hassle-free.

Key Features:

Designed to deliver superior performance and durability, the HPS silicone radiator hose kit includes the following key features:

• Direct replacement for OEM rubber upper and lower radiator hoses (OEM PN: 52079401AB, 52079406AC)
• High temperature resistance up to 350°F (177°C) for reliable operation under extreme heat
• 3-ply reinforced silicone construction for enhanced strength and longevity
• Lower radiator hose includes a stainless steel coil insert to prevent collapse under negative pressure
• Includes 100% stainless steel industrial grade embossed hose clamps that resist cutting into silicone hoses
• Engineered for a perfect fit with all OEM bends and dimensions, ensuring easy installation
• Durable black finish for a clean, professional appearance under the hood
• Withstands high pressure and harsh operating conditions from daily driving to off-road competition

Construction & Design:

The hoses are constructed from premium 3-ply reinforced silicone, a material known for its flexibility, durability, and resistance to heat and pressure. This multi-layer design provides superior strength compared to traditional rubber hoses, reducing the risk of cracking, swelling, or bursting over time. The lower radiator hose is uniquely engineered with a stainless steel coil insert, which prevents hose collapse caused by negative pressure during engine operation—a common failure point in stock hoses.

All hose clamps included in the kit are made from 100% stainless steel with an embossed design, ensuring they securely fasten the hoses without damaging the silicone material. This attention to detail in materials and design guarantees a long-lasting, reliable cooling system upgrade for your Jeep Grand Cherokee.

Installation & Fitment:

This hose kit is designed as a direct OEM replacement for the 1999–2004 Jeep Grand Cherokee 4.0L models, requiring no modifications for installation. The hoses feature precise bends and lengths to match the original equipment, making the swap straightforward for both professional mechanics and experienced DIY enthusiasts. The included stainless steel clamps simplify securing the hoses, ensuring a leak-free fit and reliable performance.

What's Included:

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

Ideal For:

This HPS silicone radiator hose kit is ideal for Jeep Grand Cherokee owners who want to upgrade from aging OEM rubber hoses to a more durable, heat-resistant solution. It is perfect for daily drivers seeking improved reliability as well as off-road enthusiasts who demand superior performance under extreme conditions. The kit is also well-suited for anyone performing routine maintenance or restoration on their 1999–2004 Jeep Grand Cherokee 4.0L.