EXT401 Performance Headers – Toyota Sourer & Lexus SC400 4.0 V8 1UZ-FE 1991-2000 

EXT401 long tube headers (extractors) are a great performance upgrade designed for Toyota Sourer & Lexus SC400 4.0L V8 IUZ-FE. These precision-engineered headers will improve exhaust flow, increase torque, sharpen throttle response, and deliver a stronger exhaust note. Perfect for restorations, high street performance, and weekend cruisers, they ensure a tidy, leak-free fit with proven Pacemaker quality.

Key Features

• Interference design headers recommended for high performance applications
• Mandrel-bent 45mm primary pipes, 48mm secondary pipes with flanged 2.50" outlets
• Thick, machined flanges for durability and reliable sealing
• Has oxygen sensor fittings 
• Smooth merge collectors for improved scavenging and power delivery
• These headers are currently made to order which may take 4-6 weeks

Construction

• High-quality steel tubing with quality welding for long service life
• Heat-resistant finish rated to 800°C

Additional Options

• Ceramic Coating: Enhanced durability and heat management
• Gaskets (DSF818): Available separately for optimal sealing

Fitment Notes

• Will fit left hand drive
• Will fit factory air conditioning
• Protect painted surfaces and wrap headers during trial fitting
• Clearance may vary with engine mounts, steering, and aftermarket parts

What’s Included

• EXT401L left side header
• EXT401R right side header
• Outlet flanges / bolts with gaskets 

Recommended With

• New exhaust gaskets 
• Matching intermediate pipes, joiners, or adaptors (sold separately)

Warranty & Compliance

• Backed by manufacturer 2 year warranty (standard terms apply)
• Check local regulations for emissions and roadworthiness compliance

Customer Support

For phone orders, advice, or part enquiries – contact us:

📞 Call Now: +61 2 9547 3511 ✉️ Email Us