Wildcat Headers WILD073 – Mitsubishi Triton ME MF MG MH MJ 2.6L 4G54 1986–1996

Wildcat WILD073 exhaust headers (extractors) are designed for selected Mitsubishi Triton ME, MF, MG, MH and MJ models from 1986 to 1996 fitted with the 2.6L 4G54 Astron petrol engine.

Manufactured in Australia, WILD073 features an interference 4-2-1 design developed for street performance and everyday driving. The combination of 42mm primary pipes, 51mm secondary pipes and a 57mm outlet is designed to improve exhaust scavenging, exhaust gas flow, usable torque, throttle response and engine performance.

WILD073 is listed for selected manual and automatic transmission vehicles in both 2WD and 4WD configurations.

Key Features

• Check availability before ordering
• Australian made Wildcat performance headers
• Interference 4-2-1 design for street performance applications
• Designed for the 2.6L 4G54 Astron petrol engine
• Suitable for listed manual and automatic transmission applications
• Suitable for listed 2WD and 4WD applications
• 42mm primary pipes
• 51mm secondary pipes
• 57mm outlet
• Designed to improve exhaust flow, torque, throttle response and engine performance

Vehicle Fitment

• Make: Mitsubishi
• Model: Triton
• Series: ME / MF / MG / MH / MJ
• Year Range: 1986–1996
• Engine: 4G54 Astron
• Capacity: 2.6L
• Fuel: Petrol
• Transmission: Manual / Automatic
• Drivetrain: 2WD / 4WD

Header Specifications

• Brand: Wildcat
• Part Number: WILD073
• Header Design: Interference 4-2-1
• Primary Pipe Size: 42mm
• Secondary Pipe Size: 51mm
• Outlet Size: 57mm
• Oxygen Sensor Provision: No
• Finish: Heat-resistant paint rated to 600°C
• Application: Street Performance
• Manufacture: Australian Made

Construction

• High-quality steel tubing with strong welded construction
• Formed pipework designed for efficient exhaust gas flow
• Heat-resistant paint finish rated to 600°C for added protection and durability
• Australian made

Additional Options

• DSF036: Exhaust manifold/header gasket – available separately
• EGR fitting required for MJ models
• High-temperature exhaust gasket sealant
• Replacement manifold studs and nuts where required

Fitment Notes

Overseas Applications

North American Dodge Ram 50 and Mitsubishi compact pickups were available with the 2.6L 4G54 engine. WILD073 may suit selected related applications; however, chassis, steering position, emissions equipment and exhaust layout can differ between markets. Please contact us with your vehicle details before ordering for an overseas application.

What's Included

• Wildcat WILD073 header / extractor assembly
• Outlet connection components as supplied

Recommended With

• DSF036 exhaust manifold/header gasket – sold separately
• High-temperature exhaust gasket sealant
• Replacement manifold studs and nuts where required

Installation Tips

• Lubricate manifold studs, nuts and exhaust fasteners with WD-40 or a similar penetrating lubricant before removal.
• Remove all traces of the old manifold gasket before installing the headers.
• Inspect the cylinder-head sealing surface, manifold studs and threads before installation.
• Fit a new manifold/header gasket and use high-temperature exhaust sealant where recommended.
• Trial-fit the headers before fully tightening the fasteners.
• Check clearance around steering, starter motor, transmission, engine mounts and bodywork.
• Protect the painted header surfaces during installation.
• Re-tighten the header/manifold bolts after approximately 500km to help maintain a reliable gasket seal.

Why Good Headers & Exhaust Systems Matter

• At approximately 85% volumetric efficiency, the 2.6L 4G54 Astron engine at 4,000rpm moves approximately 4,420L/min intake airflow and can expel around 11,500L/min hot exhaust gas
• At higher rpm and under increased engine load, exhaust volume increases significantly due to engine demand and hot-gas expansion
• Efficient headers improve scavenging, reduce exhaust restriction, and support usable horsepower, torque and throttle response

Warranty & Compliance

Frequently Asked Questions

Which Mitsubishi Triton models does WILD073 suit?
WILD073 is designed for selected Mitsubishi Triton ME, MF, MG, MH and MJ models fitted with the 2.6L 4G54 Astron petrol engine.

Do WILD073 headers fit both manual and automatic transmissions?
Yes. WILD073 is listed for selected manual and automatic transmission applications.

Do they fit both 2WD and 4WD Tritons?
Yes. WILD073 is listed for selected 2WD and 4WD applications.

Does the MJ Triton require an EGR fitting?
Yes. MJ models require an EGR fitting.

Is there a provision for an oxygen sensor?
No. WILD073 does not have an oxygen sensor provision.

What size are the WILD073 headers?
WILD073 uses 42mm primary pipes, 51mm secondary pipes and a 57mm outlet.

Which gasket does WILD073 use?
The current listing specifies DSF036 as the recommended manifold/header gasket, sold separately.

Will WILD073 fit a Dodge Ram 50?
Selected North American Dodge Ram 50 models were fitted with the 2.6L 4G54 engine. Because steering position, chassis and emissions equipment can differ from Australian Triton applications, please contact us with your vehicle details before ordering.

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

For phone orders, advice, or part enquiries – contact us: