Advance Headers | Mild Steel Exhaust Extractors | Ford Falcon Fairlane XR-XF 351 Cleveland 4V | A350

PRODUCT CONTENTS:

• 1 x Heavy-Duty Mild Steel Left-Hand 351C 4V Big Port Extractor Bank Assembly
• 1 x Heavy-Duty Mild Steel Right-Hand 351C 4V Big Port Extractor Bank Assembly

Key Features:

• Engineered specifically to match the ultra-wide opening footprint of authentic Ford 4V "Big Port" Cleveland cylinder heads, ensuring zero gas flow turbulence or step restrictions at the header face
• Tuned mandrel-bent primary piping pathways ensure completely uniform internal flow geometry, optimizing exhaust scavenging velocity across high-RPM working bands
• Substantially optimizes top-end horsepower curves and breathing capability—providing the perfect flow foundation for highly modified street cruisers, drag cars, and tough restorations
• Heavy-duty mild steel construction structurally built to handle intense engine bay thermal expansion cycles and high-vibration muscle car applications safely
• Thick, precision laser-cut cylinder head flanges maintain a flat, ultra-stable mating footprint to permanently guard against face distortion, thermal warping, and high-pressure gas leaks

Specifications:

⚠️ Crucial Cylinder Head Variant Alignment Warning:
This product (Part No. A350) is configured and clearance-mapped strictly for authentic 4V Big Port Cleveland cylinder head profiles. Because the exhaust ports on a 4V head are physically larger and positioned differently than standard 2V (Small Port) Cleveland motors or standard Windsor V8 lineages, this flange will NOT seal correctly on 2V heads. Please verify your casting numbers or port sizing dimensions clearly before processing your order.

Please Note: Due to tight engine bay parameters across early Ford shock-tower models and late-chassis steering shaft links, professional installation by a classic car exhaust specialist or restoration workshop is highly recommended.