COBB Silicone Radiator Hose Kit (B46410-BK) | Subaru WRX 2022-2025

The COBB Silicone Radiator Hose Kit (B46410-BK) upgrades the factory coolant lines on your 2022–2025 Subaru WRX with high-quality, reinforced silicone hoses designed to withstand elevated temperatures and pressures. This kit improves long-term reliability, enhances coolant flow stability, and delivers a clean, durable appearance under the hood ideal for both daily driving and performance use.

KEY FEATURES

• Direct-fit silicone hoses engineered to replace the stock rubber radiator hoses
• High-temperature and pressure-resistant construction for improved durability
• Black exterior finish for a clean, understated engine-bay look
• Resists expansion, cracking, and deterioration common with factory hoses over time
• Enhances coolant flow reliability under aggressive driving or heavy loads
• Includes all required hoses and clamps for complete installation

TECHNICAL SPECIFICATIONS

• Reinforced silicone hose material engineered for thermal stability and pressure resistance
• Precision-molded hose ends to match OEM routing for straightforward bolt-on installation
• Includes stainless-steel or corrosion-resistant clamps for secure fittings
• Compatible with stock radiator and cooling system layout on 2022–2025 WRX
• Ready for use with stock cooling system or upgraded radiators/cooling components

VEHICLE FITMENT

• Subaru WRX 2022–2025

COBB delivers proven, data-driven performance solutions engineered to optimize your Subaru with unmatched precision and reliability.