Mitsubishi Triton ML 3.5L V6 6G74 Headers – Wildcat WILD709M / RBH709

Wildcat WILD709M / RBH709 exhaust headers (extractors) are designed for the Mitsubishi Triton ML fitted with the 3.5L V6 6G74 petrol engine from 2006 to 2009.

Featuring a tuned-length header design, these extractors replace the restrictive factory exhaust manifolds and are designed to improve exhaust gas flow and scavenging. The result is improved torque, throttle response and overall engine performance, making them well suited to street, touring and 4WD applications.

Key Features

• Designed for Mitsubishi Triton ML 3.5L V6
• Suits the 6G74 petrol engine
• Tuned-length design for improved exhaust flow and street performance
• 1.50" primary pipes
• 2.00" outlets
• Designed to improve exhaust flow, torque, throttle response and engine performance
• Australian-made Wildcat performance headers

Construction

• Australian-made Wildcat / Genie performance headers
• Quality mild steel construction
• Strong welded construction for durability
• Heat-resistant painted finish rated to approximately 600°C
• Precision mounting flanges for reliable sealing

Vehicle Fitment

• Make: Mitsubishi
• Model: Triton
• Series: ML
• Engine: 6G74 V6 petrol
• Capacity: 3.5L
• Year: 2006–2009

Fitment Notes

• Welding is required to refit the original catalytic converters.
• The factory catalytic converters must be cut from the original exhaust and incorporated into the new header/exhaust connections.
• Professional exhaust installation is recommended due to the cutting and welding required.
• Manifold/header gaskets available separately – see DSF158
• Please confirm your Triton is fitted with the 3.5L 6G74 V6 petrol engine before ordering.

What’s Included

• Wildcat WILD709M / RBH709 header / extractor assemblies

Recommended With

• DSF158 exhaust manifold/header gaskets
• Replacement exhaust flange gaskets as required
• Replacement manifold studs and nuts where existing hardware is worn or corroded
• Quality exhaust fabrication and welding for refitting the original catalytic converters

Why Good Headers & Exhaust Systems Matter

At 4,000 rpm, the 3.5L 6G74 V6 draws in approximately 7,000 litres of intake air per minute and expels around 21,000 litres of hot exhaust gas per minute at approximately 600°C. A well-designed header and exhaust system helps manage this high gas flow efficiently, reducing restriction and improving exhaust scavenging, torque, throttle response and engine performance.

Installation Tips

Apply penetrating lubricant such as WD-40 or similar to the manifold studs, nuts and exhaust fasteners before removal. Trial-fit the headers and catalytic-converter connections before welding or fully tightening the system. Protect the painted surfaces during installation to minimise scratching or damage.

Warranty & Compliance

Wildcat headers are covered by the manufacturer's warranty subject to standard warranty terms and conditions.

The original catalytic converters and required emissions-control equipment must be retained. Exhaust and emissions requirements vary between Australian states and territories, and the completed installation must comply with the regulations applicable to the vehicle in your state or territory.

FAQ

What Triton models do WILD709M / RBH709 headers suit?
These headers are designed for the Mitsubishi Triton ML fitted with the 3.5L V6 6G74 petrol engine from 2006 to 2009.

Do the original catalytic converters need to be retained?
Yes. The original catalytic converters are retained and must be incorporated into the exhaust when fitting these headers.

Is welding required?
Yes. The original catalytic converters must be cut from the factory exhaust and welded into the new header/exhaust connections. Professional installation is recommended.

What size are the header pipes?
WILD709M / RBH709 uses 1.50" primary pipes with 2.00" outlets.

What manifold/header gasket is required?
The recommended gasket is DSF158, available separately.

Can I pick up from the store?
Yes. Pick up is available but must be pre-arranged before collection.

How much is freight?
Freight varies depending on your delivery location and where stock is available. Please contact us for freight charges before ordering. Where possible, we can arrange dispatch from the nearest available product location to help reduce freight costs and delivery times.

Customer Support

For phone orders, fitment advice or product enquiries, contact Best Mufflers:

Call Now: +61 2 9547 3511 Email Us

Best Mufflers
87A Planthurst Road, Carlton NSW 2218, Australia
Monday–Friday 8:00am–5:00pm by appointment
Exhaust Systems Since 1983