Ford Racing 52 LB/HR Fuel Injector Set - M-9593-MU52

The Ford Racing 52 LB/HR Fuel Injector Set (M-9593-MU52) is a complete set of eight high-flow fuel injectors engineered for performance Mustang applications. These are the exact injectors that Ford used as original equipment on the 2013–2014 Shelby GT500 Mustang, making them a proven, factory-quality choice for high-performance fuel delivery. Whether you're replacing worn injectors on a GT500 or upgrading an earlier high-output Mustang build, this set delivers the precision fuel metering that demanding engines require.

Key Features & Benefits

• 52 lb/hr Flow Rate: Designed to feed high-output supercharged engines with the fuel volume they demand, supporting serious power levels without fuel starvation.
• 6-Hole Injector Design: The multi-hole spray pattern promotes finer fuel atomization compared to a single-hole nozzle, supporting more complete combustion and cleaner power delivery.
• High-Impedance (Saturated) Circuit: High-impedance injectors are compatible with a wide range of factory and aftermarket engine management systems without requiring a ballast resistor, simplifying installation on many performance builds.
• USCAR Electrical Connector: Fits the standard USCAR connector format used on many Ford performance applications. If your vehicle uses a different connector style, Ford Racing's M-14464-A8 Fuel Injector Adapter Kit is available as a separate solution.
• Original Equipment on the 2013–2014 GT500: These are not aftermarket interpretations — they are the same injector specification Ford installed at the factory on one of the most powerful production Mustangs ever built, giving you confidence in fit, finish, and function.
• Complete Set of Eight: All eight injectors are included, so you can refresh or upgrade an entire V8 engine in one purchase without hunting down individual units.

Specifications

• Flow Rate: 52 lb/hr
• Spray Pattern: 6-hole
• Impedance Type: High-impedance
• Electrical Connector: USCAR
• Quantity: Set of 8
• Part Number: M-9593-MU52
• Brand: Ford Racing

Fitment

These injectors are confirmed original equipment on the 2013–2014 Ford Mustang Shelby GT500. They are designed for performance Mustang applications and work best when paired with appropriate air metering and engine management calibration. Ford Racing notes these injectors are intended for use in the applications identified in the product description; installing them in vehicles outside those applications may affect emissions compliance.

If your vehicle uses a different electrical connector style than USCAR, Ford Racing offers the M-14464-A8 Fuel Injector Adapter Kit as a compatible accessory (sold separately). Confirm your vehicle's injector connector type before ordering. A performance tune calibrated for the 52 lb/hr injector flow rate is strongly recommended any time injectors are upgraded — several Ford performance specialists specifically note this as a required step.

What's in the Box

• 8x Ford Racing 52 lb/hr, 6-hole, high-impedance fuel injectors (USCAR connector)

Note: No instruction sheet is included with this part per Ford Racing's product listing.

Why Buy from ThreePiece.us

At ThreePiece.us, we take the guesswork out of performance parts shopping. Our team is available to help confirm fitment for your specific Mustang build before you buy — just reach out before placing your order. Every order ships free, no minimums or exclusions. Need to spread out the cost? We offer financing through Affirm, so you can get your build moving today and pay over time. We carry Ford Racing performance parts because we know Mustang enthusiasts demand parts that perform as promised.

Frequently Asked Questions

What vehicles do these injectors fit?

The M-9593-MU52 injectors are confirmed original equipment on the 2013–2014 Ford Mustang Shelby GT500. They are intended for high-performance Mustang applications. If you're unsure whether these suit your specific build, contact our team before ordering.

How many injectors are included?

This is a complete set of eight (8) injectors — enough for a full V8 engine replacement or upgrade in one order.

Do I need a tune after installing these injectors?

Yes. Upgrading fuel injectors changes the fuel delivery calibration your engine management system expects. Multiple Ford performance specialists specifically note that a tune calibrated for the 52 lb/hr flow rate is required when installing these injectors. Always have your vehicle properly tuned after any injector change.

What if my vehicle has a different electrical connector?

These injectors use a USCAR electrical connector. If your application uses a different connector style, Ford Racing offers the M-14464-A8 Fuel Injector Adapter Kit as a compatible accessory, sold separately. Verify your connector type before purchasing.