The COBB 15-21 Subaru WRX MAF Extension Harness does not have enough exact application evidence to assign safe vehicle YMM. Match manufacturer part number SUB-ELE-007, complete vehicle, engine and transmission configuration, factory equipment, required calibration, emissions eligibility, interfaces, and every product note before ordering.

Key Features

• 36-Inch Extension: Ideal length routes MAF sensor cleanly to new intake tube positions without excess slack.
• OEM-Style Connectors: Matches factory Subaru plugs for secure, error-free connection to MAF sensor and harness.
• USA-Made Reliability: Precision-built to factory specs for long-term durability in demanding WRX applications.
• Wire gauge matches OEM for identical signal integrity and performance.
• Unplug factory MAF connector, attach extension, secure routing to intake location with zip ties.
• No, STI uses a different MAF connector; designed exclusively for WRX VA chassis.

Fitment

Specifications

What’s Included

One new COBB product in the exact configuration and quantity identified by manufacturer part number SUB-ELE-007. Calibrations, hardware, hoses, clamps, gaskets, adapters, wiring, fluids, tools, and companion components are included only when expressly stated for this exact part number.

About COBB

COBB develops engine-management, intake, cooling, exhaust, drivetrain, suspension, and vehicle-accessory products for supported performance platforms. Correct selection remains exact-vehicle, exact-configuration, exact-interface, and exact-part-number specific.

Related COBB Products

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• Cobb 15-20 Subaru STI SS 3in Cat-Back Exhaust Hardware Kit
• Cobb Subaru Post MAF Hose – Stealth Black

Browse the COBB collection for related tuning, intake, cooling, exhaust, drivetrain, and chassis products.

Frequently Asked Questions

Why is fitment verification required for this COBB product?
Exact vehicle application evidence is not complete enough for safe YMM. Confirm the vehicle, drivetrain, factory equipment, calibration, emissions eligibility, interfaces, and exact part number before ordering.

Are all supporting parts included?
Only components expressly listed for the exact manufacturer part number are included. Tuning, hardware, hoses, clamps, gaskets, adapters, wiring, fluids, and companion components may be separate.

Is tuning or calibration required after installation?
Requirements depend on the exact product and vehicle. Intake, fuel, boost, turbo, and engine-management changes may require a compatible calibration before operation.

Installation Instructions

Follow the current COBB and factory service instructions for this exact part number. Verify fitment, factory equipment, emissions eligibility, required calibration, software and firmware, interfaces, hardware, fluid or electrical connections, and clearances before installation. Inspect the completed work and confirm safe operation before full-load use.