Mackay Engine Bypass Coolant Hose – Precision Fit for Subaru Impreza WRX/STi & Forester Turbo

Upgrade your Subaru’s cooling system with the Mackay CH3660 Engine Bypass Coolant Hose, meticulously crafted to meet or exceed OEM specifications. Engineered from premium EPDM rubber with rayon knitted reinforcement, this throttle body coolant hose offers superior heat, water, and ozone resistance. Designed to deliver exceptional burst protection and durability, it ensures your engine maintains optimal temperature under the most demanding conditions.

Key Features:

• Premium Material Quality: Made from heat-resistant, ozone-resistant EPDM rubber reinforced with durable rayon knit for long-lasting performance.
• Reliable Burst Protection: Special construction safeguards against pressure bursts, maintaining consistent cooling system flow.
• OEM Specification Compliance: Built to match or exceed original manufacturer standards (SAE J20R4 Class D-1, ISO Certified).
• Resistance to Electrochemical Degradation: Prolongs hose life by withstanding the harsh chemical environment inside modern cooling systems.
• Perfect Fitment: Engineered specifically for select Subaru Impreza 2.0L WRX/STi and Forester 2.5L Turbo models, ensuring easy installation and leak-free operation.
• Compact Dimensions: Measures 100mm (L) x 80mm (W) x 40mm (H), weighing only 0.05 kg for hassle-free handling and fit.

Compatible Vehicles:

• Subaru Impreza GC and GF series (1992–2002) with 2.0L EJ201, EJ205, and EJ207 engines
• Subaru Forester SH (2011–2013) 2.5L Turbo AWD (EJ255)

(Note: Refer to detailed fitment below to ensure compatibility; not suitable for certain EJ20E and EJ20G engine variants.)

Exclusions:

This hose does NOT fit Subaru Impreza models with EJ20E GX, RX, or EJ20G WRX engines, as specified in the detailed fitment guide.

Why Choose Mackay?

With an 85-year legacy in Australian automotive manufacturing, Mackay stands for unmatched quality and engineering excellence. Having pioneered rubber-to-metal bonding techniques and supplied parts for iconic Australian vehicles from the FX Holden to the VF Holden, Mackay products are trusted worldwide for performance and reliability. When you choose Mackay, you invest in parts that deliver uncompromised durability and efficiency.

Upgrade your Subaru’s throttle body coolant system with the Mackay Engine Bypass Coolant Hose – engineered for a precise fit, lasting reliability, and optimal thermal management. Order now to experience quality that keeps your engine running cooler and stronger.

Specifications & Fitment Summary:

• Product Type: Engine Bypass Hose / Coolant Hose / Heater Hose
• Material: EPDM Rubber with Rayon Knitted Reinforcement
• Standards Compliance: SAE J20R4 Class D-1, ISO Certified
• Resistance: Heat, Ozone, Electrochemical Degradation
• Dimensions: 100 mm (L) x 80 mm (W) x 40 mm (H)
• Weight: 0.05 kg

Compatible Subaru Models:

| Make | Model | Years | Engine | Notes |

|-----------|----------------------|------------|-------------------------|---------------------|

| Subaru | Impreza GC / GF | 1992–2002 | 2.0L EJ201, EJ205, EJ207| WRX, STI, Sportswagon|

| Subaru | Forester SH | 2011–2013 | 2.5L Turbo AWD EJ255 | Turbocharged models |

Important: This hose is not compatible with Subaru EJ20E GX, RX, or EJ20G WRX engine variants. Please confirm your vehicle’s exact engine code before purchasing.

Feel confident in your purchase with Mackay – the trusted name in Australian automotive parts for over eight decades.