Air and Fuel› Superchargers, Turbochargers and Components

HKS

EJ207 Actuator Upgrade Kit

$260.00

SKU: 14030-AF001

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

This kit prevents boost drop in high RPM ranges by utilizing a larger diaphragm, similar to that found in GT Pro turbines. This upgrade ensures stable performance and supports increased boost pressure settings.
Show original supplier description
The HKS Actuator Upgrade Kit is engineered to enhance the performance of Subaru Impreza WRX/STi models equipped with the EJ207 engine. The kit features an adjustable rod type design, allowing for fine-tuning of the internal wastegate settings. This actuator upgrade is compatible with a range of Subaru Impreza models, including the GRB (A-B) and GRB (C-G) generations, as well as GDB (C-G) models. It is designed for use with the MY10/2007-08/2014 model years. The boost pressure range for this kit is 76.3-88.3kPa (0.8-0.9kgf/cm2). Installation of this kit may require further adjustments, such as boost control by an EVC (Electronic Boost Controller). It is recommended for those looking for the next step in boost-up performance beyond factory specifications.

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

BrandHKS
Part Number14030-AF001
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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