Silicone Radiator Hose Kit 17-19 Chevrolet Duramax 6.6L L5P

Silicone Radiator Hose Kit 17-19 Chevrolet Duramax 6.6L L5P provides a direct-replacement cooling hose solution that improves long-term reliability by eliminating the failure modes inherent to factory molded rubber and plastic hoses during repeated heat cycles.

This Mishimoto silicone hose kit is engineered to replace the original Duramax L5P radiator hoses, addressing the common degradation caused by thousands of thermal cycles and extended idle operation. The result is a more consistent coolant pathway designed to maintain fit and service life under repeated heat exposure.

• Silicone construction: Replaces factory molded rubber and plastic to reduce susceptibility to heat-cycle hardening and cracking, supporting sustained coolant containment over time.
• Direct-replacement fit: Designed for the 2017–2019 Chevrolet Duramax 6.6L L5P application to preserve factory routing and connections, limiting installation time and maintaining OEM serviceability.
• Mishimoto engineering: Supplied by Mishimoto, a brand known for focused cooling-system components and durability-driven design intent for trucks and performance vehicles.

Why this matters: factory hoses exposed to thousands of heat cycles and hours of idle time can become brittle or fail, leading to coolant loss and unplanned downtime. Installing a silicone radiator hose kit mitigates those failure modes and helps maintain coolant system integrity for towing, work, and daily use.

Technical notes

• Application: Replacement radiator hose kit for 2017–2019 Chevrolet Duramax 6.6L L5P
• Included components: See product packaging for exact contents and hardware

Mishimoto’s focus on cooling reliability makes this kit a practical upgrade for Duramax owners seeking a targeted improvement in hose longevity and coolant containment without altering factory system function.