Autolite HT2 spark plug for the 2004-2005 Ford F-150 V8 5.4L and other vehicles and equipment ignites the air-fuel mixture in each cylinder to start combustion. This Autolite spark plug is from the High Thread Pro line, an OE patented design exclusively for Ford 3V engines.
- High Thread Pro design with the thread above the cylinder head seating for a compressive seal
- Fine-wire platinum center electrode for focused ignition power and long service life
- Ground strap that aids heat transfer
- Proprietary design for heat management, fouling resistance and increased dielectric strength
- Nickel-plated shell for protection against corrosion
Quick facts
- Part: Autolite HT2 spark plug
- Fits: 2004-2005 Ford F-150 V8 5.4L and other vehicles and equipment
- Condition: New
Hard starting, a misfire or a rough idle can mean worn spark plugs. Ignition coils, fuel delivery or a vacuum leak can be behind the same signs too, so find the cause before you buy new plugs.
Fits
It is listed for a wide range of Ford models. The 2005-2008 Ford F-250 Super Duty V10 6.8L takes ten plugs, and the 2005 Ford Mustang V8 4.6L takes eight. If your vehicle isn't named here, look for its year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: varies by engine
- Thread size: M16 - 1.5, metric
- Thread diameter: 16 mm
- Hex size: 9/16 in
- Seat type: Tapered
- Manufacturer heat range: 10
- Center electrode projection: Extra-Long Special
- Insulator height: 63.8 mm (2.51 in)
- Center electrode insulator tip projection: 3.4 mm (0.135 in)
Build and materials
- Center electrode: fine wire, platinum tip, copper core
- Ground electrode: standard tip, nickel tip and core
- Insulator material: Ceramic
- Resistor type: Yes, 5000 ohm
- Electrical terminal: Non-removable nut
- Condition: New
- Warranty: Autolite 4 year limited warranty
- Country of origin: Mexico
In the box
The spark plug only. A washer is not included.
Interchange: PZT2F · PZT2FE · SP421
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is the Autolite HT2 a Ford F-150 spark plug for the 2004-2005 V8 5.4L?
Yes. Autolite HT2 is listed for the 2004-2005 Ford F-150 V8 5.4L, which takes eight plugs. For other years or engines, find yours in the "Vehicles it fits" section.
Does the HT2 work as a Ford Mustang spark plug on the 2005 V8 4.6L?
Yes. Autolite HT2 is listed for the 2005 Ford Mustang V8 4.6L, which takes eight plugs. It has an M16 - 1.5 metric thread.
Is the HT2 one of the Autolite platinum spark plugs?
Yes. Autolite HT2 has a fine-wire design with a platinum center electrode tip.
Is the HT2 one of the Autolite copper spark plugs?
No. It is a platinum-tip plug. Its center electrode has a copper core, and the ground electrode is nickel.
What heat range and thread size is the Autolite HT2?
Autolite HT2 is manufacturer heat range 10 with an M16 - 1.5 metric thread, a tapered seat and a 9/16 inch hex.
