Unequal Length Exhaust Manifold - FA20DIT

• 2015–2021 Subaru | WRX

The Tomei Expreme Unequal Length Exhaust Manifold (part TB6010-SB04A) is an unequal length exhaust manifold for the 2015-2021 Subaru WRX with the FA20DIT engine, built to remove the exhaust flow restrictions of the OEM manifold while producing the boxer rumble.

Features

• Unequal length runners produce the unique boxer engine rumble
• Even 45mm piping from the engine all the way to the turbo, where the OEM header's turbo-side port is restricted to 33mm
• Collector made using the lost wax method, so the collector pipes merge smoothly with no restriction
• Slide adjuster extends the manifold to accommodate thicker head gaskets
• Highly rigid, lightweight stepless flange

Specifications

• Brand: Tomei
• Part number: TB6010-SB04A
• Engine: FA20DIT
• Fitment: 2015-2021 Subaru WRX
• Design: Unequal length
• Piping: 45mm from the engine to the turbo

Questions & Answers

Q: Does this fit my 2019 Subaru WRX?

A: Yes. This Tomei manifold (part TB6010-SB04A) fits the 2015-2021 Subaru WRX with the FA20DIT engine.

Q: Why choose an unequal length manifold?

A: The unequal length runners produce the unique boxer engine rumble, and the Tomei design removes the multiple restriction points of the OEM manifold so exhaust gas flows smoothly to the turbo.

Q: What piping size does the Tomei manifold use?

A: The Tomei manifold uses an even 45mm piping diameter from the engine all the way to the turbo.

Q: Can it work with a thicker head gasket?

A: Yes. The slide adjuster on the Tomei manifold allows users running thicker head gaskets to extend the manifold to accommodate them.

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