If you’re in the market for high-performance 550cc injectors for your SR20DET or KA24DE engine, you’ve come to the right place. Used and approved by RS Enthalpy Tuning, these injectors are a great inexpensive alternative to many of the pricier injectors out there. Enjoy an excellent low pulse width with predictable response, as well as superb atomization for modern single and multi-valve engines. This set will require no more than a 1% trim for easy tuning, and all o-rings are supplied for installation.

Product Features

Each set of 550cc injectors is sold with a complete flow-data chart indicating individual dynamic and static flow rates at 3, 3.5, and 4 BAR at 25%, 50%, and 100% for each injector, along with dead time (latency) period at 14 volts.

As part of our quality control, each injector has been marked/inscribed by our technician with an individual control number, and each is part of a unique flow-matched set.

This injector set is for modified engines with high horsepower. See the chart below.

Injector Body Design: Metal and composite plastic

Flow Rates

The following are true and tested flow rates of this fuel injector. We use Heptane as our testing agent.

550-560 cc/min at 43.5 psi (3 bar)

590-600 cc/min at 50 psi (3.5 bar)

640-650 cc/min at 58psi (4 bar)

All sets are shipped with a flow-data information document. Flow rates will vary slightly from set-to-set.

Order Online Today

Besides being industry leaders, we’re also members of the automotive community ourselves. We take pride in the products that we sell, and our expert staff always goes the extra miles for our customers. Give us a call at 1-888-SR20DET if you have any questions about our 550cc injectors or any of our other products. Place your order today.

SPECIAL NOTE: All orings are supplied for installation.