Subaru Impreza Liberty Forester 2007-2014 EJ20 EJ25 Wildcat Exhaust Headers WILD732

Wildcat WILD732 exhaust headers (extractors) are designed for selected Subaru Impreza, Liberty and Forester models fitted with naturally aspirated EJ20 and EJ25 horizontally opposed petrol engines.

Featuring an interference-style design with 40mm (1.58") primary pipes, 51mm (2.00") secondary pipes and a 51mm (2.00") outlet, WILD732 is designed to improve exhaust gas flow and scavenging compared with the restrictive factory exhaust manifold, helping improve torque, throttle response and usable engine performance.

WILD732 is intended for selected naturally aspirated EJ20 and EJ25 applications only. It is not suitable for turbocharged Subaru WRX, GT or XT models.

Please check availability and current lead time before ordering.

Key Features

• Designed for selected Subaru Impreza, Liberty and Forester applications
• Suits selected naturally aspirated EJ20 and EJ25 petrol engines
• Interference-style header design
• 40mm (1.58") primary pipes
• 51mm (2.00") secondary pipes
• 51mm (2.00") outlet
• 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

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

Vehicle Fitment

• Make: Subaru
• Models: Impreza / Liberty / Forester
• Forester: Selected naturally aspirated EJ20 / EJ25 models 2008–2013
• Impreza: Selected naturally aspirated EJ20 / EJ25 models 2007–2014
• Liberty: Selected naturally aspirated EJ20 / EJ25 models 2007–2014
• Engine Family: EJ20 / EJ25
• Configuration: Horizontally opposed 4-cylinder petrol
• Induction: Naturally aspirated applications only

Fitment Notes

• Designed for selected naturally aspirated Subaru EJ20 and EJ25 applications
• Not suitable for turbocharged WRX, GT or XT models
• Subaru used multiple EJ20 and EJ25 engine and exhaust configurations during these years, so vehicle model, engine and build date should be confirmed before ordering
• Engine conversions, replacement engines or previously modified exhaust systems may affect fitment
• Inspect the original manifold/header gaskets and replace where required
• Please check availability and current lead time before ordering.

What’s Included

• 1 x Wildcat WILD732 header assembly
• Outlet/flange components as supplied with the header

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

Recommended With

• New exhaust manifold/header gaskets where required
• Replacement exhaust studs and nuts where existing hardware is worn or corroded
• Suitable catalytic converter where required
• Quality performance exhaust system where further exhaust flow improvement is required

Why Good Headers & Exhaust Systems Matter

At 4,000 rpm, a 2.0L EJ20 theoretically draws in approximately 4,000 litres of intake air per minute and can expel around 12,000 litres of hot exhaust gas per minute at approximately 600°C. A 2.5L EJ25 can draw approximately 5,000 litres per minute and expel around 15,000 litres of hot exhaust gas per minute under the same theoretical conditions.

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 exhaust studs, nuts and threaded fittings before removal
• Inspect the cylinder-head sealing surfaces, exhaust studs and threads before installation
• Replace manifold/header gaskets where required
• Trial-fit the header before fully tightening the mounting hardware
• Check clearance around the engine, chassis, steering and surrounding components
• Protect the painted header surfaces during trial fitting and installation
• Ensure oxygen sensors are correctly installed and connected 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 applicable 2-year manufacturer's warranty subject to standard warranty terms and 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 Subaru models does WILD732 suit?
WILD732 is designed for selected naturally aspirated Subaru Impreza, Liberty and Forester models fitted with EJ20 or EJ25 petrol engines. Fitment varies by model, engine and build date.

Does WILD732 fit turbocharged Subaru models?
No. WILD732 is intended for selected naturally aspirated applications only and is not suitable for turbocharged WRX, GT or XT models.

Does WILD732 suit both EJ20 and EJ25 engines?
Yes. WILD732 is listed for selected naturally aspirated EJ20 2.0L and EJ25 2.5L applications. Please confirm the specific vehicle and engine before ordering.

What size are the WILD732 header pipes?
WILD732 uses 40mm (1.58") primary pipes, 51mm (2.00") secondary pipes and a 51mm (2.00") outlet.

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

What finish is used on WILD732?
The headers have a heat-resistant painted finish rated to approximately 600°C.

Are WILD732 headers Australian made?
Yes. Wildcat WILD732 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