Deliver a precise, engine-matched spray of fuel with the Standard Ignition Fuel Injector FJ450. This multi-port (MFI) gasoline injector drops in as a direct-fit replacement for the 1999-2001 Ford Explorer (V8-5.0L), 1999-2001 Mercury Mountaineer (V8-5.0L), 2000-2001 Mazda MPV (V6-2.5L), and 2000-2002 Mercury Cougar (V6-2.5L). It plugs in via two male blade terminals and is finished in white.
- 100% new: built with no remanufactured components.
- Corrosion-resistant build: brass terminals plus a stainless steel calibration slide and spring for more consistent performance.
- Engine-specific metering: laser-drilled metering discs and a high-precision nozzle calibrate flow rate and spray pattern for efficient fuel atomization, designed to help restore engine performance and support fuel economy.
- Tested & sealed: end-of-line tested and calibrated, and it includes a high-temperature Viton O-ring/seal for proper sealing.
Per-application quantity varies by engine: the listed V8-5.0L applications use 8, while the V6-2.5L applications use 6. This listing is for one injector, sold individually; retainer clips are not included. If a failed injector is the cause of rough idle, misfire, or poor fuel economy, this replaces it. Made in the USA (Greenville, SC).
Manufacturer part number: FJ450.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does the FJ450 fit?
It's a direct-fit replacement for the 1999-2001 Ford Explorer (V8-5.0L), 1999-2001 Mercury Mountaineer (V8-5.0L), 2000-2001 Mazda MPV (V6-2.5L), and 2000-2002 Mercury Cougar (V6-2.5L). See the Buyer's Guide tab.
How many injectors do I need?
Quantity varies by engine: the listed V8-5.0L applications use 8 and the V6-2.5L applications use 6. This listing is for one injector, sold individually.
Is this a new or remanufactured injector?
It is 100% new and built with no remanufactured components.
What's included with the injector?
It includes a high-temperature Viton O-ring/seal. Retainer clips are not included.
What are signs my fuel injector may need replacing?
Rough idle, misfires, hard starting, or poor fuel economy can be signs. Diagnose the cause first, since these symptoms have other possible sources; if the injector is at fault, this replaces it.
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