Mitsubishi Challenger 1998-2004 3.0L V6 6G72 Manual Wildcat Exhaust Headers WILD273M

Wildcat WILD273M exhaust headers (extractors) are designed for selected Mitsubishi Challenger models from 1998–2004 fitted with the 3.0L V6 6G72 petrol engine and manual transmission.

Featuring an interference-style design with 45mm (1.75") primary pipes, 51mm (2.00") secondary pipes and 57mm (2.25") outlets, WILD273M is designed for street performance applications to improve exhaust gas flow and scavenging for better torque, throttle response and usable engine performance.

WILD273M is an Australian-made, direct-fit header set for the applicable manual-transmission Challenger application.

Important: WILD273M suits manual transmission models only and is listed for vehicles with the catalytic converter on the driver's side.

Please check availability and current lead time before ordering.

Key Features

• Designed for selected Mitsubishi Challenger 1998–2004 applications
• Suits the 3.0L V6 6G72 petrol engine
• Manual transmission only
• Interference-style design for street performance applications
• 45mm (1.75") primary pipes
• 51mm (2.00") secondary pipes
• 57mm (2.25") outlet
• Direct-fit design for the applicable vehicle configuration
• Designed to improve exhaust gas flow and scavenging
• Helps improve torque, throttle response and engine performance
• Australian-made Wildcat performance headers

Construction

• Quality steel construction
• Strong welded construction for durability
• Heat-resistant painted finish rated to approximately 600°C
• Australian manufactured by Wildcat

Additional Options

• New exhaust manifold/header gaskets where required
• Replacement manifold studs and nuts where existing hardware is worn or corroded
• Performance exhaust system where further exhaust flow improvement is required

Vehicle Fitment

• Make: Mitsubishi
• Model: Challenger
• Year Range: 1998–2004
• Engine: 6G72
• Engine Capacity: 3.0L
• Configuration: V6 petrol
• Transmission: Manual only
• Catalytic Converter Position: Driver's side

Fitment Notes

• Designed for selected Mitsubishi Challenger models from 1998–2004 fitted with the 3.0L V6 6G72 petrol engine
• Manual transmission models only
• Listed for vehicles with the catalytic converter on the driver's side
• Direct-fit header design for the applicable vehicle configuration
• Engine conversions, replacement engines, transmission conversions or previously modified exhaust systems may affect fitment
• Inspect engine and transmission mounts before installation, as worn mounts can alter engine position and header clearance
• Please confirm the vehicle is an applicable 3.0L 6G72 manual model with the driver's-side catalytic converter before ordering
• Please check availability and current lead time before ordering.

What’s Included

• 1 x Set Wildcat WILD273M exhaust headers / extractors

Note: Exhaust manifold/header gaskets are not included unless specifically stated or selected separately at the time of purchase.

Recommended With

• Suitable new exhaust manifold/header gaskets
• Replacement manifold studs and nuts where required
• Quality performance exhaust system where further exhaust flow improvement is required

Why Good Headers & Exhaust Systems Matter

At 4,000 rpm, the 3.0L 6G72 V6 theoretically draws in approximately 6,000 litres of intake air per minute and can expel around 18,000 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 manifold studs, nuts and exhaust fasteners before removal
• Remove all traces of the old manifold gaskets and inspect the cylinder-head sealing surfaces
• Fit suitable new exhaust manifold/header gaskets
• Trial-fit both headers and check all clearances before fully tightening the mounting hardware
• Confirm the catalytic converter and exhaust layout matches the required driver's-side catalytic converter configuration
• Inspect manifold studs and nuts and replace damaged or heavily corroded hardware where required
• Check clearance around the steering, transmission, starter motor and surrounding components
• Protect the painted header surfaces during trial fitting and installation
• Ensure oxygen sensors, catalytic converter and emissions-control equipment are correctly retained where applicable
• Check all exhaust connections for leaks after installation
• Inspect and re-tighten the header mounting hardware after the initial heat cycles

Warranty & Compliance

Wildcat headers are covered by the manufacturer's applicable warranty conditions.

Installation must retain the catalytic converter, 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

Which Mitsubishi Challenger does WILD273M suit?
WILD273M is designed for selected Mitsubishi Challenger models from 1998–2004 fitted with the 3.0L V6 6G72 petrol engine and manual transmission.

Does WILD273M suit an automatic Challenger?
No. WILD273M is listed for manual transmission models only.

Why is the catalytic converter position important?
WILD273M is listed for the applicable Challenger configuration with the catalytic converter on the driver's side. Check the exhaust layout on your vehicle before ordering.

Are WILD273M headers a direct fit?
Yes. WILD273M is listed as a direct-fit header set for the applicable manual-transmission vehicle configuration.

What size are the WILD273M header pipes?
WILD273M uses 45mm (1.75") primary pipes, 51mm (2.00") secondary pipes and 57mm (2.25") outlets.

What finish is used on WILD273M?
The headers have a heat-resistant painted finish rated to approximately 600°C.

Are WILD273M headers Australian made?
Yes. Wildcat WILD273M headers are manufactured in Australia.

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.

Do you ship to the USA?
Yes. Best Mufflers regularly ships exhaust systems and exhaust parts to customers throughout the United States.

Please note that import duties, tariffs, taxes, and customs clearance fees are not included in the product or shipping price. Once your order is processed and the applicable charges are calculated, we will send you a secure payment link to finalise the import duties and tariff charges before dispatch.

Customer Support

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