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SKU: BB22400-BK | UPC: 700424676576
Cobb 08-14 Subaru WRX / 08-21 STI Silicone Radiator Hoses
Cobb Silicone Radiator Hoses replace factory rubber hoses on 2008-2014 Subaru WRX and 2008-2021 STI models with durable 4-ply reinforced silicone construction. These hoses resist higher boost pressures and extreme engine bay temperatures for consistent cooling during track days or daily drives. Engineered as direct OEM replacements, they install without modifications for immediate performance gains.
Key Features
- 4-Ply Aramid Reinforcement: Handles pressures over 100 PSI and continuous temperatures above 300°F to prevent bursts under high boost.
- Direct OEM Fitment: Matches factory shapes, lengths, and connection points for bolt-on installation on WRX and STI cooling systems.
- High-Temperature Silicone: Outlasts stock rubber hoses in heat-soaked conditions, reducing cracking and failure over time.
- Laser-Etched Cobb Logo: Adds precise branding visible under the hood for authentic performance part identification.
- Black Anodized Finish: Provides a clean, professional look that complements modified engine bays.
Product Notes
- Intended for stock radiator setups custom intercoolers may require trimming.
- Wipe interior surfaces with isopropyl alcohol before installation to remove residues.
- Packaged securely to prevent bending during transit.
Installation Notes
- Professional installation recommended.
- Drain cooling system completely and allow engine to cool before hose removal.
- Reuse OEM spring clamps or upgrade to T-bolt clamps for applications over 25 PSI boost.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2014 | Subaru | Impreza WRX | All |
| 2008-2021 | Subaru | Impreza WRX STI | All |
Why Choose Cobb?
- 25+ years developing Subaru-specific tuning and cooling components.
- In-house dyno and track testing ensures real-world reliability.
- Precision-molded in the USA for consistent fit and function.
Frequently Asked Questions
-
Q: Will these hoses fit 2015-2021 STI models with OEM radiators?
A: Yes, direct fit for all 2008-2021 STI variants including sedan and hatchback with stock cooling systems. -
Q: What material and reinforcement do these hoses use?
A: 4-ply aramid-reinforced silicone rated for 300°F+ continuous duty and high burst pressures. -
Q: What is the warranty and installation time?
A: Backed by Cobb's 1-year warranty installs in 30-60 minutes with basic tools after coolant drain.
Shipping & Handling
- Method: UPS Ground / USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective retail box, 10" x 10" x 4" dimensions
- Weight: 2.2 lbs
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