8X OEM 25LB Fuel Injectors 0280150947 For 1991-1997 Ford F250 F350 MUSTANG 7.5L

Ford · Fuel System · Injectors · 25LB/HR · 0280150947 · Set of 8 · In stock

What Are the OEM 25LB Fuel Injectors for Ford 7.5L?

The 0280150947 is a 25 lb/hr (pounds-per-hour) Bosch-style EV1 electronic fuel injector designed for the 7.5L (460 cubic inch) big-block V8 used in 1991-1997 Ford F-250, F-350, and Mustang models. This listing includes a complete set of 8 injectors — one for each cylinder. Fuel injectors are precision electromechanical valves: when the engine control unit (ECU) pulses the injector open for a precisely calculated duration (typically 2-20 milliseconds), pressurized fuel sprays through a micro-machined nozzle directly into the intake port. Over decades of service, injector nozzles accumulate varnish deposits, internal filter baskets clog, and coil windings degrade, leading to poor spray patterns, incorrect fuel delivery, and the classic symptoms of rough idle, hesitation, poor fuel economy, and elevated emissions.

In short: A complete set of 8 replacement fuel injectors for the 1991-1997 Ford 7.5L (460) V8 engine. If your truck or Mustang has a rough idle, black smoke, poor fuel mileage, or misfire codes that are not resolved by spark plugs and ignition components, aged injectors are a prime suspect — and injector replacement on a 7.5L is a well-documented maintenance procedure with substantial drivability benefits.

Injector Replacement Guide for the 7.5L (460) V8

Preparation

Relieve fuel system pressure before disconnecting any fuel line — the Ford 7.5L runs at approximately 30-45 PSI fuel pressure. Disconnect the battery negative terminal. Have new injector O-rings lubricated with clean engine oil ready (the new injectors should include O-rings, but confirm). Have a fuel line disconnect tool if your model year uses spring-lock fuel line couplings.

Installation Sequence

Remove the upper intake manifold plenum to access the fuel rail (the 7.5L intake design requires plenum removal). Disconnect the electrical connectors from all 8 injectors — the wire retaining clips are brittle with age; have spare clips available. Remove the fuel rail mounting bolts and gently lift the rail with all injectors still attached (some injectors will stay in the rail, others in the intake manifold — this is normal). Clean each injector bore in the intake manifold with a lint-free cloth and a small amount of throttle body cleaner — debris falling into the intake port can score cylinder walls. Install new injectors into the rail first (lubricated O-rings), then lower the assembly onto the intake, pressing each injector firmly into its bore until the O-ring seats. Torque fuel rail bolts to specification.

Post-Installation Check

Before starting the engine, cycle the ignition key from OFF to RUN (not START) several times to let the fuel pump pressurize the system. Inspect each injector-to-rail and injector-to-manifold joint for fuel leaks. Start the engine and check for smooth idle. A brief period of rough running is normal as the ECU re-learns fuel trim. If a single cylinder misfires immediately after replacement, suspect a pinched O-ring or an injector electrical connector not fully seated.

Key Specifications

Frequently Asked Questions

How do I confirm that the injectors are the actual cause of my engine problem?

A professional injector balance test (performed with a scan tool that can disable individual injectors and measure RPM drop per cylinder) is the definitive diagnostic. If all cylinders drop roughly equally when their injector is disabled, the injectors are contributing evenly and the problem is elsewhere (vacuum leak, ignition, compression). A cylinder with significantly less RPM drop indicates a weak or clogged injector on that cylinder. Without a scan tool, a mechanic's stethoscope on each injector body should produce a consistent clicking sound at idle — a silent injector is not firing. Resistance across each injector's terminals should be consistent (typically 12-16 ohms for high-impedance injectors of this era).

Do I need to replace anything else at the same time?

Since the upper intake manifold must be removed to access the injectors, this is an opportune time to replace: (a) the intake manifold gasket set, (b) the valve cover gaskets (if accessible), (c) the fuel filter, (d) all vacuum lines that are hardened or cracked, and (e) the PCV valve and its grommet. These are low-cost items that are labor-intensive to replace separately. The incremental cost of doing them while the intake is already off is trivial compared to the labor of going back in later.

Are these compatible with the 7.5L in E-350 vans as well?

The 1991-1997 Ford E-350 vans with the 7.5L (460) engine use the same engine family and typically the same fuel injection components as the F-series trucks of the same era. However, always verify the part number on your existing injectors before ordering for a van application, as there can be calibration differences between chassis platforms and between California-emissions and federal-emissions vehicles.

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