Subaru OEM Coolant Heater Hose (02-05 WRX) | 21204AA711

Overview

The Genuine Subaru OEM Coolant Heater Hose (Part #21204AA711) is an exact-fit factory replacement hose designed specifically for 2002–2005 Subaru WRX models. This OEM coolant heater hose ensures proper coolant flow to the heater core, maintaining cabin heat performance and engine cooling integrity. Choosing a Genuine Subaru part guarantees a precise fit, factory-grade materials, and the reliability you expect from the original equipment.

Key Features & Benefits

• Genuine Subaru OEM Quality – Manufactured to Subaru's exact factory specifications, ensuring a perfect fit and long-lasting performance that aftermarket parts cannot match.
• Exact-Fit Design – Engineered specifically for the 2002–2005 Subaru WRX, eliminating guesswork and the need for modification during installation.
• Factory-Grade Materials – Constructed from the same heat- and pressure-resistant rubber compound used in original production vehicles, resisting cracking, swelling, and coolant leaks.
• Maintains Heater Core Performance – Ensures proper coolant flow to the heater core, keeping cabin heat output at factory levels and preventing overheating issues.
• Backed by Subaru's Factory Warranty – Covered under Subaru's genuine parts warranty for added peace of mind.
• Direct OEM Replacement – Part #21204AA711 cross-references directly to the original factory hose, making sourcing and verification straightforward.

What's Included

• 1x Genuine Subaru OEM Coolant Heater Hose – Part #21204AA711

Specifications

Fitment & Compatibility

This Genuine Subaru OEM Coolant Heater Hose (21204AA711) is designed for the following vehicles:

Always confirm your vehicle's VIN and engine code before ordering to ensure correct fitment. If you are unsure whether this part fits your specific build, contact our team with your VIN for verification.

Installation

This is a direct OEM replacement coolant heater hose. Installation typically involves draining a portion of the coolant system, removing the old hose, and fitting the new hose onto the factory barbs or fittings using the original clamps or new clamps as needed. While a mechanically experienced owner can perform this replacement with basic hand tools, professional installation by a qualified Subaru technician is recommended to ensure proper coolant system integrity and torque specifications are met. Always allow the engine to cool completely before beginning any coolant system work.