Toyota HiAce RH22 RH32 RH42 1977-1982 2.0L 18R-C Wildcat Exhaust Headers WILD118

Wildcat WILD118 exhaust headers (extractors) are designed for selected Toyota HiAce RH22, RH32 and RH42 models from 1977–1982 fitted with the 2.0L 18R-C petrol engine.

WILD118 features an interference 4-2-1 header design with 38mm (1.50") primary pipes, 45mm (1.75") secondary pipes and a 51mm (2.00") outlet. This configuration is designed to maintain exhaust gas velocity and improve scavenging for better low- and mid-range torque, throttle response and usable engine performance.

WILD118 is listed as a direct-fit application and is suitable for manual and automatic transmissions. The recommended exhaust manifold/header gasket is RBG118S.

Please check availability and current lead time before ordering.

Key Features

• Designed for selected Toyota HiAce RH22, RH32 and RH42 applications
• Suits the 2.0L 18R-C petrol engine
• Interference 4-2-1 header design for street performance applications
• 38mm (1.50") primary pipes
• 45mm (1.75") secondary pipes
• 51mm (2.00") outlet
• Direct-fit application
• Suits manual and automatic transmissions
• Designed to improve exhaust gas flow and scavenging
• Helps improve torque, throttle response and engine performance
• Australian-made Wildcat performance headers

Construction

• Quality mild steel construction
• Strong welded construction for durability
• Formed pipework designed for efficient exhaust gas flow
• Heat-resistant painted finish rated to approximately 600°C
• Australian manufactured by Wildcat

Additional Options

• RBG118S exhaust manifold/header gasket
• Replacement manifold studs and nuts where existing hardware is worn or corroded
• High-temperature exhaust gasket sealant where appropriate
• Performance exhaust system where further exhaust flow improvement is required

Vehicle Fitment

• Make: Toyota
• Model: HiAce
• Chassis: RH22 / RH32 / RH42
• Year Range: 1977–1982
• Engine Capacity: 2.0L / 1968cc
• Engine: 18R-C
• Engine Configuration: Inline 4-cylinder petrol
• Transmission: Manual / Automatic
• Fitment: Direct fit

Fitment Notes

• Designed for selected Toyota HiAce RH22, RH32 and RH42 models from 1977–1982 fitted with the 2.0L 18R-C petrol engine
• Listed as a direct-fit application
• Suits manual and automatic transmissions
• Recommended exhaust manifold/header gasket: RBG118S
• Due to the age of these vehicles, replacement engines, modified engine mounts or non-standard exhaust systems may affect fitment
• Please confirm the engine and vehicle configuration before ordering if the vehicle has been modified
• Please check availability and current lead time before ordering.

What’s Included

• 1 x Set Wildcat WILD118 exhaust headers / extractors
• Outlet components as supplied

Recommended With

• RBG118S exhaust manifold/header gasket
• Replacement manifold studs and nuts where existing hardware is worn or corroded
• High-temperature exhaust gasket sealant where appropriate
• Quality performance exhaust system where further exhaust flow improvement is required

Why Good Headers & Exhaust Systems Matter

At 4,000 rpm, the 1968cc 18R-C engine theoretically draws in approximately 3,936 litres of intake air per minute and can expel around 11,800 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
• 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 RBG118S exhaust manifold/header gasket
• Trial-fit the headers before fully tightening the mounting hardware
• Check clearance around the engine mounts, steering, transmission, starter motor and surrounding components
• Protect the painted header surfaces during trial fitting and installation
• 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 applicable 2-year manufacturer's warranty subject to standard warranty terms and conditions.

Correct fitment depends on the vehicle remaining compatible with the original application. Due to the age of these vehicles, engine, transmission and exhaust modifications should be checked before installation.

FAQ

Which Toyota HiAce models does WILD118 suit?
WILD118 is designed for selected Toyota HiAce RH22, RH32 and RH42 models from 1977–1982 fitted with the 2.0L 18R-C petrol engine.

What engine does WILD118 suit?
WILD118 is designed for the Toyota 18R-C 1968cc inline 4-cylinder petrol engine.

What size are the WILD118 header pipes?
WILD118 uses 38mm (1.50") primary pipes, 45mm (1.75") secondary pipes and a 51mm (2.00") outlet.

Does WILD118 suit manual and automatic HiAce models?
Yes. WILD118 is listed for both manual and automatic transmission applications.

Is WILD118 a direct-fit header?
Yes. WILD118 is listed as a direct-fit application for the specified Toyota HiAce models.

Which exhaust gasket is required?
The recommended exhaust manifold/header gasket is RBG118S.

What finish is used on WILD118?
The headers have a heat-resistant painted finish rated to approximately 600°C.

Are WILD118 headers Australian made?
Yes. Wildcat WILD118 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

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