Toyota Prado & Hilux 120R 4.0L V6 2005-2015 Wildcat Exhaust Headers WILD721
$608.41
Tax included
Wildcat WILD721 headers (extractors) suit selected Toyota Hilux and Prado 120 Series models fitted with the 4.0L V6 1GR-FE petrol engine, 02/2002–06/2015. Featuring a tuned 3-into-1 design with 44mm 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 WILD721 – Toyota Hilux / Prado 120 4.0L V6 1GR-FE 2005–2015
Wildcat WILD721 exhaust headers (extractors) are designed for selected Toyota Hilux and Toyota LandCruiser Prado 120 Series models fitted with the 4.0L V6 1GR-FE petrol engine from 02/2002 to 06/2015.
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 and usable engine performance. Their 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 petrol engine
- 44mm (1¾") primary pipes
- 57mm (2¼") outlets
- Mandrel-bent mild steel construction
- Suitable for manual and automatic transmissions
- 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: Hilux / LandCruiser Prado
- Prado Series: 120 Series / GRJ120R
- Engine: 1GR-FE
- Capacity: 4.0L
- Configuration: V6 DOHC Petrol
- Date Range: 2005–2015
- Transmission: Manual & Automatic
Header Specifications
- Part Number: WILD721
- Design: Tuned 3-into-1
- Primary Pipe Size: 44mm (1¾")
- 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.
- On later models 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 fitted with the 4.0L V6 1GR-FE petrol engine before ordering.
For Prado applications, this listing is intended for the applicable 120 Series / GRJ120R configuration. Vehicle specifications can vary according to build date, drivetrain and market, so please contact us if you are unsure of compatibility.
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
The Toyota 1GR-FE 4.0L V6 moves a substantial volume of air through the engine as RPM and engine load increase. The exhaust system must then efficiently carry the much hotter and expanded exhaust gases away from the engine.
A well-designed tuned header system reduces unnecessary exhaust restriction and helps improve cylinder scavenging. This can contribute to improved throttle response, stronger usable torque and more efficient engine breathing 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 WILD721 fit both manual and automatic Hilux models?
Yes. WILD721 is listed for applicable manual and automatic 4.0L V6 1GR-FE applications.
Will these headers fit a Toyota Prado?
Yes. WILD721 is listed for applicable Toyota Prado 120 Series / GRJ120R models fitted with the 4.0L V6 1GR-FE engine.
Do the catalytic converters need to be modified?
Yes. Installation requires the catalytic converters to be cut and relocated on later models.
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 may be required, so professional installation is recommended.
Are exhaust manifold gaskets included?
No. Header/manifold gaskets are not included unless specifically stated or selected separately.
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)
![Wildcat [Genie]](https://bestmufflers.com/bshop/img/m/39.jpg)
WILD721
Wildcat WILD721 headers (extractors) suit selected Toyota Hilux and Prado 120 Series models fitted with the 4.0L V6 1GR-FE petrol engine, 02/2002–06/2015. Featuring a tuned 3-into-1 design with 44mm 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.