HPS Silicone Radiator Hoses Kit

1999–2004 Jeep Grand Cherokee 4.7L V8

Part #: 57-1449R-BLK

Overview

The HPS Silicone Radiator Hoses Kit is a premium replacement solution designed specifically for the 1999 to 2004 Jeep Grand Cherokee equipped with the 4.7L V8 engine. This kit offers a durable and reliable upgrade over OEM or aftermarket rubber hoses, ensuring optimal coolant flow and engine temperature management. Ideal for Jeep owners seeking enhanced durability and performance, these hoses help prevent common issues such as coolant leaks, hose collapse, and overheating caused by aging or damaged factory hoses.

Crafted for both daily drivers and enthusiasts, the HPS kit combines precision fitment with high-quality materials to deliver long-lasting service under demanding conditions. Whether you are restoring your Jeep or upgrading for improved reliability, this hose kit provides peace of mind and superior cooling system performance.

Key Features

Engineered to meet the rigorous demands of under-hood temperatures and coolant exposure, the HPS Silicone Radiator Hoses Kit includes:

• Premium grade, high-heat resistant 3-ply reinforced silicone construction for superior durability
• Precisely molded hoses with correct bends and curves for a perfect OEM fitment
• 100% stainless steel non-perforated embossed hose clamps that secure hoses without cutting into the silicone
• Race-proven design engineered for extreme temperature service up to 350°F
• Prevents coolant leaks and engine overheating caused by cracked, damaged, or collapsed OEM hoses
• Significantly lower risk of hose failure compared to standard EPDM rubber hoses
• Recommended regular coolant level checks due to silicone’s higher water permeation rate

Construction & Design

The hoses in this kit are constructed from high-quality silicone reinforced with a 3-ply fabric layer, providing excellent resistance to heat, pressure, and chemical degradation. This multi-layer design ensures the hoses maintain flexibility and strength even after prolonged exposure to extreme engine bay temperatures. The silicone material also resists cracking, swelling, and collapsing, common issues with aging rubber hoses.

Each hose is precision-engineered with factory-correct bends and curves to guarantee a seamless fit without the need for modifications. The included stainless steel clamps are embossed and non-perforated, preventing damage to the hose surface and ensuring a secure, leak-free connection.

Installation & Fitment

Installation of the HPS Silicone Radiator Hoses Kit is straightforward and designed to be a direct replacement for the original equipment hoses on the 1999–2004 Jeep Grand Cherokee 4.7L V8. No cutting, trimming, or additional modifications are necessary, making it suitable for both professional mechanics and experienced DIY enthusiasts. The included stainless steel clamps simplify the installation process and provide a reliable seal to prevent coolant leaks.

It is recommended to inspect and maintain coolant levels regularly when using silicone hoses, as their water permeation rate is higher than standard rubber hoses. This ensures optimal cooling system performance and longevity.

What's Included

• Upper radiator hose
• Lower radiator hose
• 100% stainless steel non-perforated embossed hose clamps

Ideal For

This silicone radiator hose kit is ideal for Jeep Grand Cherokee owners looking to replace worn or damaged OEM hoses with a more durable and heat-resistant alternative. It is perfect for daily drivers who want reliable cooling system performance, as well as off-road enthusiasts and racers who demand components that withstand extreme conditions. The kit is also well-suited for restoration projects where maintaining factory fitment and appearance is important.

HPS Performance specializes in high-temperature reinforced silicone hoses and related joining solutions—couplers, tubing, and clamps—built for boosted and high-heat engine bays. Used in performance and racing applications, HPS products are designed to meet demanding temperature and pressure conditions for dependable charge-air and coolant routing.