Mishimoto 2015 Subaru WRX Red Silicone Radiator Coolant Ancillary Hoses Kit

When you're working on your 2015-2021 Subaru WRX, especially if you're looking to improve its overall reliability, replacing the factory rubber coolant and PCV hoses is a smart move. Over time, the heat and oil exposure under the hood can break down those stock rubber lines, leading to leaks or even failure. This Mishimoto silicone ancillary hose kit is designed to replace those weak points with a more durable solution.

Mishimoto builds these hoses using four layers of silicone, reinforced with heat-resistant embedded fibers. This construction gives them a much better tolerance for both high temperatures and increased pressure compared to standard rubber. The silicone material also stands up much better to oil particles that can degrade rubber hoses over time, meaning these should last significantly longer. Because they're made to factory specifications, installation is straightforward, fitting right into place where the original hoses were.

This kit includes 13 individual hoses, covering both the coolant and PCV systems. Choosing silicone means you're getting improved longevity and a more reliable setup for your WRX's cooling and crankcase ventilation systems.