Air and Fuel› Fuel Injection Systems and Components - Electronic

CTS Turbo

52lb (550cc) High-Impedance Fuel Injector

$54.99

SKU: inj52hb

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Bosch 52lb (550cc) High-Impedance Fuel Injector is a genuine Bosch injector designed for high-flow applications. It delivers 52 lbs/hr at 43.5 PSI and features a wide split cone spray pattern ideal for 4-valve configurations. This high-impedance injector is compatible with most ECUs and offers linear control at low pulse widths, enhancing idle and low-speed driveability.
Show original supplier description
The Bosch 52lb (550cc) High-Impedance Fuel Injector, model 0280158117, is a genuine Bosch component engineered for enhanced engine performance. It flows 52 lbs/hr (544cc/min) at 43.5 PSI and is capable of functioning at higher fuel pressures, even up to 6 bar, without the common issues found in other high-flow, high-impedance injectors. This injector features a wide split cone, 6-orifice spray pattern, promoting improved mixture preparation and atomization for better idle quality and lower BSFC, making it particularly well-suited for 4-valve head applications. Its high-impedance design (12 Ohms) ensures compatibility with most factory ECM/PCM injector drivers, and despite its high flow rate, it maintains linear and controllable performance at low pulse widths, which is beneficial for ULEV applications and improves driveability at low speeds. The electrical connector is USCAR (New-style V=EV6 / Oval / LS2), and it is fitted with Viton upper and lower o-rings. While described as a drop-in fit for MK4/MK5 R32, note that adapter harnesses are required for use in Audi/VW applications. Specifically, an EV14 to EV1 adapter is needed for regular Bosch-style connectors on vehicles like the 1.8T, 2.7T, and VR6, while an EV14 to Nippon Type A adapter is required for R32 models with oval 2-pin connectors.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCTS Turbo
Part Numberinj52hb
CategoryAir and Fuel

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy