Mishimoto MMHOSE-SUB-ANCBL Blue Silicone Ancillary Hose Kit 2001-2005 Subaru WRX For Sale - New and Used

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Part Brand: Mishimoto

Part Number: MMHOSE-SUB-ANCBL

Vehicle Fitment

• 2001-2005 Subaru Impreza WRX (GD / GG Chassis, EJ20 / EJ205 2.0L H4 Turbo, AWD)

Fitment Notes

• Fits the Subaru Impreza WRX (non-STI) with the EJ20 / EJ205 engine only. Does NOT fit the WRX STI — the STI uses the EJ207 engine with different ancillary hose routing and is not compatible with this kit.
• The 2001 model year WRX was sold in Japan and Australia; US market WRX sales began with the 2002 model year. All listed model years share the same EJ20 ancillary hose circuit.
• This is an ancillary hose kit — it replaces coolant reservoir, turbo coolant feed/return, and crankcase/PCV breather hoses. It does not include the upper and lower radiator hoses (see MMHOSE-WRX-01BL for the radiator hose kit) or the intercooler hoses (see MMHOSE-SUB-INTBL for the intercooler hose kit).
• Hose clamps are not included — OEM clamps or aftermarket replacements must be sourced separately.
• This is the blue colorway. Sister SKUs are available in black (MMHOSE-SUB-ANCBK) and red (MMHOSE-SUB-ANCRD).
• Maximum operating temperature: 330°F (165°C).
• Some hoses in this kit may require minor trimming for optimal fitment depending on specific build year and configuration.

Features

• Direct OEM-fit ancillary silicone hose replacement kit developed for the 2001-2005 Subaru Impreza WRX EJ20 — covering the coolant reservoir, turbo coolant, and crankcase/PCV breather circuits with 9 purpose-formed silicone hoses.
• Dual-layer construction combines high-grade silicone with heat-resistant embedded fibers, providing superior pressure tolerance and heat resistance versus OEM rubber hoses that degrade from heat cycling, oil vapor exposure, and age.
• Rated to 330°F (165°C) — permanently resistant to cracking, hardening, swelling, and collapse in the high-heat, oil-rich environment around the EJ20\'s turbocharged engine and crankcase ventilation system.
• PCV and crankcase breather hoses especially benefit from silicone construction — these lines are continuously exposed to oil mist and blow-by vapors that cause accelerated degradation of OEM rubber over time.
• Turbo coolant feed and return hose replacement in silicone eliminates a common failure point on aging WRX platforms, where rubber turbo coolant hoses harden and crack under sustained heat from the turbocharger housing.
• Blue finish provides a bold, high-visibility engine bay upgrade — a visual improvement over factory black rubber that complements the traditional rally-inspired WRX aesthetic.
• Pairs naturally with the Mishimoto WRX silicone radiator hose kit (MMHOSE-WRX-01BL) and intercooler hoses (MMHOSE-SUB-INTBL) for a complete silicone hose system overhaul on the GD WRX.
• Backed by the Mishimoto Lifetime Warranty.

Specifications

• Hose Material: Dual-layer high-grade silicone with heat-resistant embedded fibers
• Color: Blue
• Maximum Operating Temperature: 330°F (165°C)
• Quantity: 9 silicone hoses
• Hose Coverage: Coolant reservoir hoses, turbo coolant feed/return hoses, PCV / crankcase breather hoses
• Clamps Included: No
• Engine Code: EJ20 / EJ205
• Chassis: GD (Sedan), GG (Wagon)
• Drivetrain: AWD

Included Components

• 9x Blue silicone ancillary hoses (coolant reservoir, turbo coolant, and PCV / crankcase breather circuits)
• Mishimoto Lifetime Warranty

Product Description

The Mishimoto MMHOSE-SUB-ANCBL is a direct OEM-fit silicone ancillary hose kit developed for the 2001-2005 Subaru Impreza WRX with the EJ20 / EJ205 2.0L turbocharged flat-four engine. The kit targets the ancillary hose circuits — specifically the coolant reservoir lines, turbo coolant feed and return hoses, and the crankcase/PCV breather hoses — that are distinct from the main radiator and intercooler circuits and are often overlooked during cooling system upgrades. These hoses operate in some of the harshest conditions in the EJ20 engine bay: the turbo coolant lines are exposed to sustained high temperatures from the turbocharger housing, while the PCV and crankcase breather hoses are continuously bathed in oil mist and blow-by vapors that accelerate rubber degradation. On a WRX that is now over 20 years old, original rubber hoses in these positions are prime candidates for failure.

All 9 hoses in the kit are constructed from a dual layer of high-grade silicone with heat-resistant embedded fibers, rated to 330°F. Silicone provides permanent resistance to the cracking, hardening, and oil-induced swelling that cause OEM rubber to fail, making this a true lifetime replacement rather than a maintenance item. The blue finish adds a striking visual element to the engine bay — particularly effective on the GD WRX\'s compact, turbo-forward engine bay layout where the ancillary hose routing is visually prominent. This kit does not replace the main upper and lower radiator hoses (available separately as MMHOSE-WRX-01BL) or the intercooler hoses (available separately as MMHOSE-SUB-INTBL) — owners pursuing a complete silicone system overhaul will want to pair all three kits together.

This kit is specifically engineered for the WRX with the EJ20 engine and is not compatible with the WRX STI, which uses the higher-output EJ207 engine with different ancillary hose routing. Hose clamps are not included; existing OEM spring clamps or worm gear clamps should be reused or replaced with suitable aftermarket equivalents at the time of installation. Note that some hoses in this kit may benefit from minor trimming to optimize fitment depending on specific build year. An official Mishimoto installation video is available to guide the process. Covered by the Mishimoto Lifetime Warranty.

*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.

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• Free shipping across the contiguous 48 United States (excludes Hawaii and Alaska). Item(s) ships on the same day or within 1 business day. Delivery time is within 2 to 4 business days excluding next day deliveries. Orders over $750 require signature for delivery.
• Canada customers - If does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.

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• Any returns received installed, mounted, used or missing components will be subject to return fee\'s.

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