Subaru Liberty Forester Impreza Outback EJ20 EJ22 EJ25 Exhaust Gasket – SUG009

SUG009 exhaust flange gasket is designed for compatible Subaru Liberty, Forester, Impreza and Outback vehicles fitted with EJ20, EJ22 and EJ25 boxer engines. Installed between the engine cylinder head and exhaust header or manifold flange, this twin-port gasket features two 45mm openings, reinforced fire rings and a 1.8mm thickness.

Key Features

• Engine-to-header exhaust flange gasket
• Twin exhaust port design with two 45mm openings
• Reinforced fire rings for exhaust sealing
• 1.8mm gasket thickness
• OE-quality replacement specification
• Suitable for compatible Subaru EJ-series exhaust flange arrangements

Construction

• Twin-port exhaust flange gasket
• Two reinforced exhaust openings with fire rings
• Designed to seal the connection between the cylinder head and exhaust manifold or headers

Product Specifications

• SKU: SUG009
• Product: Engine-to-header exhaust flange gasket
• Bolt Hole Centres: 112mm and 87mm
• Centre Hole Size: 2 × 45mm
• Thickness: 1.8mm
• Fire Ring: Yes
• Outside Diameter: Not applicable

Vehicle Fitment

• Subaru Liberty: Compatible EJ20, EJ22 and EJ25 applications
• Subaru Forester: Compatible EJ20 and EJ25 applications
• Subaru Impreza: Compatible EJ20 and EJ25 applications
• Subaru Outback: Compatible EJ25 applications

Fitment Notes

• Designed for compatible Subaru twin-port engine-to-header flange arrangements
• Not every EJ20, EJ22 or EJ25 exhaust manifold uses the same gasket
• Check the original gasket profile, bolt-hole positions and port dimensions before ordering
• Confirm compatibility when fitting aftermarket headers or modified exhaust systems
• Two gaskets may be required when replacing both cylinder-head exhaust flange gaskets on a boxer engine

Additional Options

• Exhaust Flange Plates
• Exhaust Sealant
• More Exhaust Gaskets 

What's Included

• 1 × SKU: SUG009 Subaru Engine-to-Header Exhaust Flange Gasket 

Recommended With

• Second SUG009 gasket where required for the opposite cylinder head
• Replacement exhaust fasteners where existing hardware is damaged or corroded
• Compatible exhaust flange plates for custom exhaust fabrication

Installation Tips

• Allow the exhaust system to cool completely before removal
• Clean the cylinder-head and exhaust flange mating surfaces
• Check both surfaces for damage or distortion
• Position the gasket correctly without obstructing the exhaust openings
• Tighten the exhaust fasteners evenly to the vehicle manufacturer's specifications
• Check for exhaust leaks after installation

Warranty & Compliance

Replacement exhaust gasket designed for compatible standard road-going and aftermarket exhaust applications. Warranty applies to the supplied part only, subject to applicable Australian Consumer Law rights.

Frequently Asked Questions

What does the SUG009 gasket fit?
SUG009 is listed for compatible Subaru Liberty, Forester, Impreza and Outback EJ20, EJ22 and EJ25 engine-to-header exhaust flange applications. Always confirm the original gasket dimensions and shape.

What are the gasket measurements?
The gasket has 112mm and 87mm bolt-hole centre measurements, two 45mm exhaust openings and a thickness of 1.8mm.

Does this gasket have fire rings?
Yes. SUG009 features reinforced fire rings around both exhaust openings.

How many gaskets are supplied?
One SUG009 gasket is supplied. Some Subaru boxer engine installations require two gaskets, one for each cylinder head.

Will it fit aftermarket headers?
It may suit aftermarket headers with the matching flange profile, bolt-hole positions and exhaust port dimensions. Compare measurements before ordering.

Can I collect my order?
Yes. Pickup must be pre-arranged. Please contact us before ordering to confirm availability and arrange collection.

How much is freight?
Freight varies depending on delivery location and stock availability. Please contact us before ordering if you require a freight quotation.

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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