Toyota FJ Cruiser 4.0L V6 20011-2016 Wildcat Exhaust Headers WILD726
$532.81
Tax included
Wildcat WILD726 headers (extractors) suit selected Toyota FJ Cruiser fitted with the 4.0L V6 1GR-FE petrol engine, 02/2011–06/2016. Featuring a tuned 3-into-1 design with 42mm mandrel-bent primary pipes and 57mm outlets, these Australian-made headers are designed to improve exhaust flow, throttle response and usable performance.
Important: Installation requires the catalytic converters to be cut and relocated on later models. ECU calibration may also be required after installation.
Wildcat Headers WILD726 – Toyota FJ Cruiser GSJ15R 4.0L V6 1GR-FE 03/2011–12/2016
Wildcat WILD726 exhaust headers (extractors) are designed for Toyota FJ Cruiser GSJ15R models fitted with the 4.0L V6 1GR-FE DOHC petrol engine from 03/2011 to 12/2016.
Featuring a tuned 3-into-1 design, these headers replace the restrictive factory exhaust manifolds and are designed to improve exhaust gas flow, throttle response, torque and overall engine performance. Mandrel-bent construction provides smooth exhaust flow while maintaining the strength and durability required for everyday street and 4WD applications.
Key Features
- Australian made Wildcat performance headers
- Tuned 3-into-1 design
- Designed for the 4.0L V6 1GR-FE DOHC Dual VVT-i petrol engine
- 42mm (1 5/8") primary pipes
- 57mm (2¼") outlets
- Mandrel-bent mild steel construction
- Suitable for the factory 5-speed automatic transmission
- Designed to retain air conditioning and power steering applications
- Provision for oxygen sensors
- Performance replacement for the restrictive factory exhaust manifolds
Vehicle Fitment
- Make: Toyota
- Model: FJ Cruiser
- Series: GSJ15R
- Engine: 1GR-FE
- Capacity: 4.0L / 3956cc
- Configuration: V6 DOHC 24 Valve Dual VVT-i Petrol
- Date Range: 03/2011–12/2016
- Transmission: 5-Speed Automatic
- Drivetrain: 4WD
Header Specifications
- Part Number: WILD726
- Design: Tuned 3-into-1
- Primary Pipe Size: 42mm (1 5/8")
- Outlet Size: 57mm (2¼")
- Construction: Mandrel-bent mild steel
- Application: Street performance / 4WD
Important Installation Information
These headers are not a simple bolt-on installation.
- The factory catalytic converters must be cut and relocated during installation.
- Welding and exhaust fabrication are required.
- Relocating the catalytic converters may cause the check-engine light to illuminate.
- An ECU calibration / computer edit may be required after installation.
- Professional installation by an experienced exhaust workshop is strongly recommended.
- Allow approximately 4 hours fitting time as a general guide.
- Lubricate exhaust studs, nuts and threaded fittings with penetrating lubricant before removal.
Fitment Notes
Please confirm your vehicle is an Australian-delivered Toyota FJ Cruiser GSJ15R fitted with the 4.0L V6 1GR-FE Dual VVT-i petrol engine before ordering.
This listing applies to the Australian FJ Cruiser GSJ15R 03/2011–12/2016. Specifications of overseas-market FJ Cruiser models may differ, so please contact us before ordering for vehicles originally sold outside Australia.
Check availability before ordering.
For vehicles manufactured from 1986 onwards, modifications to catalytic converters or other emissions-control equipment may be subject to emissions and registration regulations. Verify compliance requirements applicable in your state or territory before installation.
What's Included
- Left-hand Wildcat header assembly
- Right-hand Wildcat header assembly
- Required outlet/flange components supplied with the header kit
Note: Exhaust manifold/header gaskets are not included unless specifically selected or stated at the time of purchase.
Why Good Headers & Exhaust Systems Matter
At 4,000 rpm, the 4.0L 1GR-FE V6 draws in approximately 8,000 litres of intake air per minute and expels around 24,000 litres of exhaust gas per minute at approximately 600°C.
A well-designed tuned header system helps reduce unnecessary exhaust restriction and improve cylinder scavenging, contributing to improved exhaust flow, torque, throttle response and engine performance compared with restrictive factory exhaust manifolds.
Warranty & Compliance
Wildcat headers are manufactured for reliable performance and are covered by the manufacturer's applicable warranty conditions.
Installation involving catalytic converter relocation or modification of emissions-control components must comply with applicable vehicle emissions and registration regulations. It is the vehicle owner's responsibility to ensure the completed installation is legal for road use in their state or territory.
FAQ
Will WILD726 fit Australian Toyota FJ Cruiser models?
Yes. WILD726 is designed for applicable Toyota FJ Cruiser GSJ15R models fitted with the 4.0L V6 1GR-FE petrol engine from 03/2011 to 12/2016.
Will WILD726 fit a manual FJ Cruiser?
Australian-delivered FJ Cruiser GSJ15R models were fitted with a 5-speed automatic transmission. If you have an overseas-market manual FJ Cruiser, please contact us before ordering to confirm compatibility.
Do the catalytic converters need to be modified?
Yes. Installation requires the factory catalytic converters to be cut and relocated.
Will the check-engine light come on?
Relocating the catalytic converters can trigger a check-engine light. ECU calibration or other appropriate corrective work may be required after installation.
Are these headers a direct bolt-on installation?
No. Cutting, welding and catalytic converter relocation are required, so professional installation by an experienced exhaust workshop is recommended.
Are exhaust manifold gaskets included?
No. Header/manifold gaskets are not included unless specifically stated or selected separately.
Can I pick up from the store?
Yes. Pick up is available but must be pre-arranged before collection.
Do you ship Australia-wide?
Yes. Best Mufflers provides fast shipping Australia-wide. Freight can be calculated during checkout or confirmed before ordering.
Do you ship to the USA?
Yes. Best Mufflers ships exhaust components internationally, including to the USA. Freight and applicable U.S. customs duties can be confirmed before dispatch.
Customer Support
For phone orders, advice, or part enquiries – contact us:
📞 Call Now: +61 2 9547 3511 ✉ Email Us
Best Mufflers
🇦🇺 87A Planthurst Road, Carlton NSW 2218
Phone: +61 2 9547 3511
Mobile: 0410 677 427
Email: mail@bestmufflers.com
Monday–Friday: 8:00am–5:00pm (By Appointment Only)
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WILD726
Wildcat WILD726 headers (extractors) suit selected Toyota FJ Cruiser fitted with the 4.0L V6 1GR-FE petrol engine, 02/2011–06/2016. Featuring a tuned 3-into-1 design with 42mm mandrel-bent primary pipes and 57mm outlets, these Australian-made headers are designed to improve exhaust flow, throttle response and usable performance.
Important: Installation requires the catalytic converters to be cut and relocated on later models. ECU calibration may also be required after installation.