What is the A/R ratio of the turbine housing, and what does it mean for performance?

This turbocharger has a 0.63 A/R ratio on the turbine housing. A smaller A/R ratio, like 0.63, generally leads to a quicker turbocharger spool-up, meaning the engine reaches full boost sooner. This is often preferred for street applications or smaller engines where responsiveness is key.

What are the supporting modifications needed when installing this turbocharger?

Installing a turbocharger requires careful consideration of supporting systems. You'll need to ensure adequate fuel delivery to match the increased air intake, proper engine management for tuning, and a reliable oil supply for lubrication and cooling. Exhaust and intake plumbing will also need to be custom fabricated or sourced to match the turbo's flanges.

Is this turbocharger legal for use in California?

No, this Garrett turbocharger is not CARB approved and therefore cannot be legally shipped to California.

Garrett Turbocharger TA3405 T3/T4E 466159-5003S

Name: Garrett TA3405 Turbocharger 57 Trim T3/T4E 0.63 A/R (Small Frame)
Brand: Garrett
SKU: garrett-garrett-ta3405-turbocharger-57-trim-t3-t4e-0-63-a-r-small-frame-t14-428569
Price: 1084.35 USD
Availability: BackOrder

Garrett TA3405 Turbocharger 57 Trim T3/T4E 0.63 A/R (Small Frame)

$1084.35

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Garrett TA3405 Turbocharger 57 Trim T3/T4E 0.63 A/R (Small Frame)

Key Features

This is a Garrett TA3405 turbocharger, part number 466159-5003S.
It features a 57 trim compressor wheel for a balance of airflow and responsiveness.
The turbine housing has a 0.63 A/R ratio, promoting quicker spool-up.
This is a small frame T3/T4E turbocharger, making it easier to fit in compact engine bays.
Garrett is a popular brand in the forced induction market.

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Product Details

If you're looking to significantly boost the power output of your performance engine, a well-built turbocharger like this Garrett TA3405 is a critical component. This unit is designed to help your engine breathe more freely, forcing more air into the combustion chambers to create more power. It's a popular choice for builders aiming for a substantial increase in horsepower, especially on smaller displacement or inline engines where space might be a consideration.

This Garrett turbocharger features a 57 trim compressor wheel, which offers a good balance between airflow capacity and responsiveness. The T3/T4E designation indicates the housing sizes, with a 0.63 A/R (Area/Radius) turbine housing. This specific A/R ratio is well-suited for engines that need a quicker spool-up without sacrificing too much top-end flow. The small frame design makes it easier to package in tighter engine bays. Garrett is a well-known name in forced induction, and this turbocharger reflects their experience in building reliable and effective performance parts.

When installing a turbocharger, it's important to ensure your engine's supporting systems are up to the task. This includes proper fuel delivery, engine management tuning, and an oil supply that can handle the demands of lubricating and cooling the turbo's rotating assembly. Because this turbocharger is not CARB approved, it cannot be shipped to California. Always consult with a professional installer or tuner to ensure your setup is safe and optimized for your specific application.