Advance Headers | Mild Steel Exhaust Extractors | Subaru Impreza Forester Liberty 2.0L 2.5L | A710
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Advance Headers | Mild Steel Exhaust Extractors | Subaru Impreza Fo...
Description
Description
Advance Headers High-Performance Mild Steel Exhaust Extractors for Subaru Impreza, Forester & Liberty 1994–2007 Naturally Aspirated EJ20 & EJ25 Boxer Engines
The Advance Headers Performance Exhaust Extractors (A710) are heavy-duty tubular manifolds custom-engineered explicitly for the naturally aspirated generations of the highly popular Subaru AWD passenger cars, wagons, and compact SUV crossovers. Tailored precisely to fit the horizontally opposed 4-cylinder 2.0-Litre (EJ20) and 2.5-Litre (EJ25) Boxer petrol engines built between 1994 and 2007, this premium upgrade replaces the restrictive factory cast iron manifold structure. By optimizing exhaust gas scavenging velocity and significantly dropping backpressure, it unlocks vital low-to-mid range torque, crisp throttle response, and provides a clean, enhanced version of that iconic Boxer engine rumble.
PRODUCT CONTENTS:
- 1 x Heavy-Duty Mild Steel Naturally Aspirated Boxer Engine Extractor Assembly
Key Features:
- Custom clearance-mapped around under-engine packaging constraints, providing perfect clearance past front crossmembers, oil pans, and symmetric AWD axle shafts cleanly
- Tuned mandrel-bent primary piping pathways ensure completely uniform internal flow geometry, optimizing gas velocity and removing heavy factory casting restrictions
- Substantially optimizes low-to-mid range working torque delivery—ideal for improving everyday city driveability, highway overtaking capability, and crossover responsiveness
- Heavy-duty mild steel construction structurally built to handle intense underbody thermal exposure cycles and classic low-slung Boxer operational vibrations safely
- Thick, precision laser-cut engine port flanges maintain a flat, ultra-stable mating footprint to permanently guard against warping, face distortion, and high-pressure exhaust leaks
- Engineered for an exceptionally fast workshop turnaround, featuring an estimated baseline installation window of just 1.5 hours
Specifications:
- Brand: Advance Headers
- Part Number: A710
- Material: Mild Steel (Standard Finish)
- Engine Suitability: Subaru Naturally Aspirated / Non-Turbo 4-Cylinder Boxer Petrol Only (EJ20 & EJ25 Blocks)
- Component Type: Performance Exhaust Extractors / Headers
- Estimated Fitting Time: 1.5 Hours
- Welding Required: No (Direct Bolt-On Configuration to Cylinder Head Faces)
⚠️ Crucial Induction Architecture & Variant Alignment Warnings:
1. Strictly Naturally Aspirated (Non-Turbo) Models Only: This product (Part No. A710) is designed and space-mapped exclusively for the standard naturally aspirated EJ-series platforms. It will NOT fit Turbocharged models (such as WRX, Forester GT/XT, or Liberty RS/B4 runs) due to completely distinct primary piping routing directions, crossmember designs, and the location requirements for up-pipe turbocharger assemblies.
2. Generation Focus (1994–2007): Configured strictly to align with chassis and steering linkages from mid-90s models up through mid-2000s updates. Always check oxygen sensor wire lengths when routing past performance collectors during final assembly.
Please Note: Professional installation by an exhaust specialist or qualified technician is highly recommended to guarantee proper downstream system alignment, clearance checks, and a perfect leak-free seal.
Important Information
- The image shown may not reflect the actual product design.
- Ensure your vehicle details match the application guide below before purchasing.
Vehicle Applications for A710 Performance Subaru Boxer Extractors
| Make | Model | Year Range Spec | Body Type | Chassis Series / Variations | Engine Details | Fitting Time | Drivetrain / Fitment Notes |
|---|---|---|---|---|---|---|---|
| Subaru | Impreza / GX / LX / RX / 2.0i / 2.5i | 1994 – 2007 | 4-Door Sedan / 5-Door Hatchback & Sportswagon | GC / GF / GD / GG Generations (Non-Turbo Only) | 2.0L & 2.5L Naturally Aspirated Boxer 4-Cylinder (EJ20 / EJ25 Only) | 1.5 Hours | AWD & FWD | Mandrel-bent upgrade layout clearance-mapped past low-slung front subframes and steering rack joints. Excludes all turbo variants. |
| Subaru | Forester / Limited | 1997 – 2007 | 5-Door Crossover SUV Wagon | SF / SG Generations (Non-Turbo Only) | 2.0L & 2.5L Naturally Aspirated Boxer 4-Cylinder (EJ20 / EJ25 Only) | 1.5 Hours | AWD | Performance layout curves smoothly past high-riding SUV underbody panels and central differential casings. Direct replacement for standard factory pipe setup. |
| Subaru | Liberty / Heritage | 1994 – 2007 | 4-Door Sedan / 5-Door Station Wagon | BD / BG / BE / BH / BL / BP Generations (Non-Turbo Only) | 2.0L & 2.5L Naturally Aspirated Boxer 4-Cylinder (EJ20 / EJ25 Only) | 1.5 Hours | AWD | Precision-formed layout handles intermediate flange connections across luxury sedan configurations smoothly while clearing factory sway bars cleanly. |
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