Toyota Landcruiser FJ62 FJ73 FJ75 4.0 3F 1984-1988 Wildcat Headers WILD137
$556.32
Tax included
Wildcat Headers WILD137 – Toyota LandCruiser FJ62, FJ73 & FJ75 4.0L 3F (1984–1988)
Wildcat WILD137 exhaust headers (extractors) are Australian-made performance headers designed to suit Toyota LandCruiser FJ62, FJ73 and FJ75 models fitted with the 4.0L 3F inline six-cylinder petrol engine built from 1984 to 1988. Featuring an interference-style header design, these headers improve exhaust scavenging for stronger low and mid-range torque, improved throttle response and a deeper exhaust note. Best Mufflers provides expert advice and shipping across Australia.
Wildcat Headers WILD137 – Toyota LandCruiser FJ62, FJ73 & FJ75 4.0L 3F (1984–1988)
Wildcat WILD137 exhaust headers (extractors) are designed for Toyota LandCruiser FJ62, FJ73 and FJ75 models fitted with the legendary 4.0L 3F petrol six-cylinder engine. Manufactured in Australia, these headers feature an interference design that improves exhaust scavenging, helping increase usable torque, throttle response and engine efficiency throughout the rev range.
Designed to fit inside the chassis rails, WILD137 headers provide excellent ground clearance while offering a direct replacement for the restrictive factory exhaust manifold.
Key Features
- Australian-made Wildcat Headers
- Interference header design for improved scavenging
- Direct replacement for the factory exhaust manifold
- Designed for street, touring and recreational 4WD applications
- 1.58" (42mm) primary pipes
- 2.00" (51mm) secondary pipes
- 2.50" (63mm) outlet
- Inside chassis fitment for excellent ground clearance
- Improves throttle response, torque and exhaust flow
Construction
- Mandrel-bent mild steel tubing
- Precision MIG welded construction
- Australian manufactured
Why Good Headers & Exhaust Systems Matter
The Toyota 4.0L 3F engine moves a substantial volume of air, making efficient exhaust flow important for torque, drivability and engine efficiency.
- At 4,000 rpm, the 4.0L engine draws approximately 8,000 litres of intake air per minute and expels approximately 24,000 litres of exhaust gas (at approximately 600°C).
- At 5,000 rpm, airflow increases to approximately 10,000 litres of intake air per minute and approximately 30,000 litres of exhaust gas per minute.
- Properly designed interference headers improve exhaust scavenging, reduce pumping losses and help deliver stronger low and mid-range torque—particularly beneficial for towing, touring and off-road driving.
What's Included
- Wildcat Headers WILD137
Recommended With
- New exhaust manifold gasket
- 2½" exhaust system components
- High-temperature exhaust sealant
- Replacement manifold fasteners where required
Fitment Notes
- Designed for Toyota LandCruiser FJ62, FJ73 and FJ75 models fitted with the 4.0L 3F petrol engine.
- Headers are designed for inside chassis installation.
- Suitable for manual and automatic transmission applications where originally fitted.
- Inspect engine mounts and steering components before installation.
- Lubricate manifold studs and fasteners with WD-40 or a suitable anti-seize compound before removal and installation.
- Retighten all fasteners after the first complete heat cycle.
- Professional installation is recommended.
- Verify emissions and registration compliance in your state.
Warranty & Compliance
Wildcat Headers are manufactured in Australia using quality materials for dependable long-term performance.
- Covered by the manufacturer's warranty against defects in materials and workmanship.
- Warranty applies to the supplied header assembly only.
- Damage caused by incorrect installation, impact, vehicle modifications or competition use is not covered.
- Verify emissions and registration compliance before installation.
Frequently Asked Questions
Which vehicles do these headers fit?
WILD137 headers suit Toyota LandCruiser FJ62, FJ73 and FJ75 models fitted with the 4.0L 3F petrol engine manufactured from 1984 to 1988.
Do these fit inside the chassis?
Yes. WILD137 headers are specifically designed for inside chassis fitment, providing excellent ground clearance for touring and off-road use.
What size exhaust system is recommended?
These headers feature a 2½-inch (63mm) outlet and are ideally matched with a quality 2½-inch exhaust system.
Are these Australian made?
Yes. Wildcat Headers are proudly manufactured in Australia.
Do these improve towing performance?
Yes. The interference design helps improve low and mid-range torque, making them well suited to towing, touring and everyday driving.
Do you ship Australia wide?
Yes. Best Mufflers ships Wildcat Headers and exhaust components throughout Australia.
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:
📞 Call Now: +61 2 9547 3511 ✉️ Email Us
🇦🇺 Best Mufflers
87A Planthurst Road
Carlton NSW 2218 Australia
Workshop Hours: Mon–Fri 8:00am–5:00pm (by appointment only)
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WILD137
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Wildcat Headers WILD137 – Toyota LandCruiser FJ62, FJ73 & FJ75 4.0L 3F (1984–1988)
Wildcat WILD137 exhaust headers (extractors) are Australian-made performance headers designed to suit Toyota LandCruiser FJ62, FJ73 and FJ75 models fitted with the 4.0L 3F inline six-cylinder petrol engine built from 1984 to 1988. Featuring an interference-style header design, these headers improve exhaust scavenging for stronger low and mid-range torque, improved throttle response and a deeper exhaust note. Best Mufflers provides expert advice and shipping across Australia.