Air and Fuel Superchargers, Turbochargers and Components

Perrin Performance

Silicone Turbocharger Inlet Hose

$283.05

SKU: PSP-INT-421

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

Its perfectly smooth interior and larger diameter than OEM increase airflow, leading to more horsepower, reduced turbo spool time, and better acceleration. The hose is constructed from silicone and reinforced with a stainless steel wire for rigidity, preventing collapse under high boost. It features a machined aluminum insert for a solid blow-off valve connection and 1/2" ID spigots for vacuum connections.
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Its interior is perfectly smooth, a significant improvement over the restrictive pleats found in OEM hoses. This smooth, larger-diameter design allows for increased air volume, directly translating to more horsepower, quicker turbo spool, and improved acceleration. The hose is built with a durable silicone construction, reinforced by an embedded stainless steel wire to maintain its shape and prevent collapse, even under extreme boost conditions common in large turbo applications. The inlet hose also features a machined aluminum insert that provides a robust connection point for the blow-off valve. The integrated spigots are sized at 1/2" ID to accommodate maximum flow for crankcase vents and other vacuum lines. These connectors are made from glass-reinforced nylon, capable of withstanding high engine bay temperatures up to 400 degrees Fahrenheit, ensuring reliability in both daily driving and demanding racing scenarios. This turbo inlet hose is compatible with 2008-2014 Subaru Impreza WRX, 2009-2013 Subaru Forester XT, and 2005-2008 Subaru Legacy GT models. Note that fitment on the Legacy GT may be tight at the BOV hose, potentially requiring modifications. The product is available in Black, Red, or Blue to match your engine bay aesthetics. It comes with a polished coupler, all necessary hardware, installation instructions, and is backed by a Perrin Performance 5 Year Limited Warranty. Additionally, this product is legal in California only for racing vehicles not intended for highway use.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandPerrin Performance
Part NumberPSP-INT-421
CategoryAir and Fuel

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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