Eastern 40905 rear catalytic converter for the 2006-2009 Subaru Outback H4 2.5L and other vehicles treats engine exhaust as it passes through the undercar exhaust system. It is a Federal / EPA direct-fit catalytic converter assembly.
A rattle from under the car, a rotten-egg smell or an emissions-related check engine light can mean a catalytic converter is failing. Before you replace it, rule out exhaust leaks, a faulty oxygen sensor and engine misfires, since those can set off a check engine light too. Only one is needed per car, at the rear position of the exhaust.
This Subaru Legacy catalytic converter is a direct-fit replacement for the 2006-2009 Subaru Legacy H4 2.5L, and it fits the 2006-2009 Subaru Outback H4 2.5L as well.
Fit and size
Build and materials
One catalytic converter with outlet hardware and one inlet gasket. Inlet hardware and an outlet gasket are not included, and the old inlet fasteners may not be reusable, so plan on new ones.
Is the Eastern 40905 a Subaru Outback catalytic converter for the 2006-2009 Outback H4 2.5L?
Yes. Eastern 40905 is a rear catalytic converter for the 2006-2009 Subaru Outback H4 2.5L, and the 2006-2009 Subaru Legacy H4 2.5L takes it too.
Does the Eastern 40905 come with a gasket and hardware?
It comes with outlet hardware and one inlet gasket. Inlet hardware and an outlet gasket are not included.
What connections does this rear catalytic converter have?
The inlet is 3 bolt welded and the outlet is 2 bolt welded. The converter has no sensor ports (sensor port count 0).
Is the Eastern 40905 CARB certified?
No. Eastern 40905 is a Federal / EPA direct-fit undercar converter and is not CARB certified.
What is Aristo Clean by Design on this Eastern catalytic converter?
It is the catalyst technology in this catalytic converter, and it helps address demanding emissions-control requirements.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
