S&S Cycle Injectors — Harley-Davidson Street Glide, Softail Fat Boy 114, Road King Special (2017-2026)

S&S Cycle Screaming Eagle fuel injector for 2017+ Milwaukee-Eight (M8) Harley-Davidson engines. This single injector delivers higher fuel flow capacity than OEM spec, engineered to support performance builds and custom tuning.

Features

• Screaming Eagle performance injector
• Higher fuel flow capacity than stock
• Designed for 2017+ M8 engines
• Direct bolt-in replacement

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 550-0983
• Weight: 0.02 lb
• Category: Fuel Delivery / Fuel Injectors - Single

Fitment

Fits 2017 and newer Harley-Davidson Milwaukee-Eight (M8) models.

Frequently Asked Questions

Will this fit my 2017 M8 Road Glide?

Yes — this injector fits all 2017+ Harley M8 models, including Road Glide, Street Glide, Road King, and Touring models.

Do I need a fuel tuner with this injector?

Yes — S&S recommends custom fuel mapping via ECU tuning to optimize air-fuel ratio and maximize the higher flow capacity.

Is this a single or dual injector setup?

This is a single injector. Some performance builds use a pair — order two if needed for dual-injector applications.

Will this work on Twin Cam engines?

No — this injector is M8-specific. Twin Cam and Screamin' Eagle models use different injector designs.

What's the weight and size?

Weighs 0.02 lb — a direct replacement that fits the OEM injector mounting location with no bracket modifications needed.