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Air and Fuel› Fuel Injection Systems and Components - Electronic

STI

2.5L Turbo Top-Feed Fuel Injector

$195.35 $140.65 Save $54.70

SKU: 16611-AA720

Out of Stock
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

It includes an O-ring and seal, and is compatible with WRX STI, Forester, and Impreza models with a 2.5L engine and turbocharger. This is a high-impedance, saturated, top-feed injector with 12 injection holes and E85 compatibility.
Show original supplier description
This Genuine Subaru Fuel Injector (part number 16611AA720) is a direct replacement for various Subaru models, including the WRX STI, Forester, and Impreza equipped with a 2.5L turbocharged engine. The injector features a 750cc flow rate at 3 bar, high impedance, and is E85 compatible, making it suitable for both stock and modified applications. It is a top-feed type with 12 injection holes, considered a newer version of the Subaru "Pinkies" fuel injectors. This part is guaranteed to be within O.E. specifications and offers a direct fit for Subaru applications requiring top-feed fuel injectors. It is also compatible with various other Subaru engines like the EJ20, EJ25, EJ255, and EJ257. A 1-year manufacturer warranty is included.

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

BrandSTI
Part Number16611-AA720
CategoryAir and Fuel
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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.

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