HPS Silicone Heater Hoses Kit

1997–2006 Jeep Wrangler 4.0L I6

Part #: 57-1221H-BLK

Overview

The HPS Silicone Heater Hoses Kit is a premium replacement solution designed specifically for Jeep Wrangler models equipped with the 4.0L inline 6-cylinder engine from 1997 through 2006. This kit offers a direct-fit upgrade over OEM heater hoses, addressing common issues such as cracking, collapsing, and coolant leaks that can lead to engine overheating. Ideal for Jeep enthusiasts and daily drivers alike, these hoses provide enhanced durability and reliability under demanding conditions.

Crafted to meet the rigorous demands of under-hood heat and coolant exposure, this kit ensures long-lasting performance and peace of mind. Whether you are restoring your Jeep or upgrading its cooling system components, the HPS Silicone Heater Hoses Kit delivers a precise fit and superior quality compared to standard rubber hoses.

Key Features

Engineered for durability and ease of installation, the HPS Silicone Heater Hoses Kit includes several advanced features that set it apart from conventional heater hoses:

• Constructed from premium-grade, high-heat resistant 3-ply reinforced silicone for exceptional strength and flexibility.
• Designed with factory-correct bends and curves to ensure perfect fitment without modifications.
• Includes 100% stainless steel non-perforated embossed hose clamps that secure hoses firmly without damaging the silicone.
• Prevents and resolves coolant leaks and overheating issues caused by cracked or collapsed OEM hoses.
• Race-proven design engineered for extreme temperature service, with a maximum temperature rating of 350°F.
• Resistant to prolonged exposure to under-hood heat and coolant chemicals, enhancing longevity.
• Compatible with daily driving conditions, though regular coolant level checks are recommended due to silicone’s higher water permeation rate compared to standard rubber hoses.

Construction & Design

The hoses in this kit are manufactured using a 3-ply reinforced silicone material that combines flexibility with superior heat resistance. This construction allows the hoses to withstand the harsh thermal environment of the engine bay while maintaining structural integrity over time. The silicone material also resists cracking, hardening, and collapsing, common failure modes in OEM rubber hoses.

Each hose is precision-molded with the exact bends and curves required for a seamless fit on the Jeep Wrangler’s heater system, eliminating the need for trimming or adjustments. The included stainless steel clamps are embossed and non-perforated, which prevents cutting or abrasion of the silicone surface, ensuring a secure and leak-free connection.

Installation & Fitment

Installation of the HPS Silicone Heater Hoses Kit is straightforward and designed to be a direct replacement for the original equipment. The hoses fit precisely onto the 1997–2006 Jeep Wrangler 4.0L I6 heater system without requiring modifications or additional adapters. The included stainless steel clamps simplify the installation process, providing a tight seal that resists loosening over time.

This kit is suitable for both professional mechanics and experienced DIY enthusiasts looking to upgrade or replace aging heater hoses. Proper installation helps prevent coolant leaks and overheating, contributing to the overall reliability and longevity of the vehicle’s cooling system.

What's Included

• Set of high-heat resistant 3-ply reinforced silicone heater hoses with factory-correct bends
• 100% stainless steel non-perforated embossed hose clamps for secure installation

Ideal For

This heater hose kit is ideal for Jeep Wrangler owners seeking a durable, high-quality replacement for worn or damaged OEM heater hoses. It is especially beneficial for those who drive their vehicles regularly or in demanding conditions where overheating and coolant leaks are a concern. Additionally, off-road enthusiasts and restorers will appreciate the enhanced reliability and longevity provided by the silicone construction.

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.