Mitsubishi Magna TH TL TW 3.5L 6G74 V6 Headers – Wildcat WILD245

Wildcat WILD245 exhaust headers (extractors) are designed for the Mitsubishi Magna TH, TL and TW fitted with the 3.5L V6 6G74 24-valve petrol engine from 1998 to 2005.

Featuring a tuned interference-style design, WILD245 replaces the restrictive factory exhaust manifolds with larger, smoother-flowing pipework designed to improve exhaust gas flow and scavenging. This helps reduce restriction and improve mid-range torque, throttle response and overall engine performance while retaining good street drivability.

WILD245 is supplied with the matching base pipe and is designed for applicable manual and automatic Magna models.

Please check availability before ordering.

Key Features

• Designed for Mitsubishi Magna TH, TL and TW
• Suits the 3.5L V6 6G74 24-valve petrol engine
• Tuned interference-style design for street performance
• 1.75" primary pipes
• 2.25" secondary pipes
• 2.50" flanged outlet
• Matching base pipe included
• Suits applicable manual and automatic models
• Designed to improve exhaust flow, torque, throttle response and engine performance

Construction

• Australian-made Wildcat 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

Additional Options

• DSF158: Replacement exhaust manifold/header gaskets available separately
• Replacement mounting hardware and exhaust components available where required

Vehicle Fitment

• Make: Mitsubishi
• Model: Magna
• Series: TH / TL / TW
• Engine: 6G74 24-valve V6 petrol
• Capacity: 3.5L
• Year Range: 1998–2005
• Transmission: Manual and automatic

Fitment Notes

• Designed for applicable Mitsubishi Magna TH, TL and TW 3.5L 6G74 models
• Suits applicable manual and automatic transmissions
• Base pipe is included with the header set
• Replacement manifold/header gaskets – see DSF158
• Please confirm your Magna is fitted with the 3.5L 6G74 24-valve V6 petrol engine before ordering
• Please check availability before ordering

What’s Included

• Wildcat WILD245 header / extractor assemblies
• Matching base pipe

Recommended With

• DSF158 exhaust manifold/header gaskets
• Replacement exhaust flange gaskets where required
• Replacement manifold studs and nuts where existing hardware is worn or corroded
• Free-flowing exhaust system for further reduction in exhaust restriction

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. Inspect the existing mounting hardware and exhaust connections before installation. Trial-fit the headers and supplied base pipe before fully tightening the system, and 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.

Installation must retain the catalytic converters, oxygen sensors and any other emissions-control equipment required for the vehicle. Exhaust and emissions requirements vary between Australian states and territories, and the completed installation must comply with the regulations applicable in your state or territory.

FAQ

What Mitsubishi Magna does WILD245 suit?
WILD245 is designed for the Mitsubishi Magna TH, TL and TW fitted with the 3.5L V6 6G74 24-valve petrol engine from 1998 to 2005.

Will WILD245 fit both manual and automatic Magna models?
Yes. WILD245 is designed to suit applicable manual and automatic models within the specified application range.

Is the base pipe included?
Yes. WILD245 is supplied with the matching base pipe for connection to the exhaust system.

What size are the header pipes?
WILD245 uses 1.75" primary pipes, 2.25" secondary pipes and a 2.50" flanged outlet.

What gaskets are required?
The recommended replacement exhaust manifold/header gaskets are 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