Bosch 8103 spark plug for the 1997 Ford F-150 V8 5.4L, the 1997-2008 F-150 V8 4.6L, the 1999 F-150 V8 5.4L and other vehicles ignites the air-fuel mixture in each cylinder. It is a double platinum plug that meets Original Equipment specifications for double platinum spark plugs.
- Platinum center firing pin and laser welded platinum ground inlay reduce gap erosion
- Bosch Double Platinum line with a fine wire electrode that needs up to 24% less voltage to ignite
- 360 degree continuous laser welding for added durability and longer life
- Copper core with a broader heat range to resist pre-ignition and fouling
Quick facts
- Part: Bosch 8103 spark plug
- Fits: the 1997 Ford F-150 V8 5.4L, the 1997-2008 F-150 V8 4.6L, the 1999 F-150 V8 5.4L and other vehicles
- Condition: New
Hard starting, a misfire or a rough idle can mean the plugs are worn, though a weak ignition coil or a dirty fuel injector can also be behind them, so find the cause before you replace anything.
Fits
Listed for a wide range of Ford, Lincoln, Mercury and Mazda models, it is a spark plug for the 2005 Ford Escape 4-cylinder 2.3L and the 2005-2008 Escape V6 3.0L, and for the 1996-2001 Ford Explorer V8 5.0L, the 1997-2005 Explorer V6 4.0L and the 2002-2005 Explorer V8 4.6L. Those engines take four, six or eight plugs, depending on the engine. If your car is not named here, look it up in the "Vehicles it fits" section, where the other vehicles are listed by year and engine.
Specifications
Fit and size
- Quantity per vehicle: 4, 6 or 8, depending on the engine
- Package quantity: 1 (sold individually)
Build and materials
- Type: double platinum, fine wire
- Center electrode: platinum firing pin
- Ground electrode: laser welded platinum inlay
- Core: copper
- Thread plating: nickel
- Resistor: yes
- Insulator type: non-projected
- Spark plug type: 4-cycle
- Condition: New
- Warranty: Bosch 5 year customer satisfaction guarantee and 1 year Technician Warranty
In the box
One spark plug.
Installation notes
- Pre-gapped, so no gap adjustment is needed.
- Nickel plated threads mean no anti-seize is required.
- Saves installation time.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this the right Ford F-150 spark plug for a 1997-2008 F-150 V8 4.6L?
Yes. Bosch 8103 is listed for the 1997-2008 Ford F-150 V8 4.6L, which takes eight plugs. For other years or engines, check the "Vehicles it fits" section.
Are these Bosch platinum spark plugs double platinum?
Yes. Bosch 8103 has a platinum firing pin on the center electrode and a laser welded platinum inlay in the ground electrode, which give 3 times longer life than conventional copper spark plugs.
Do I need to gap the Bosch 8103 or add anti-seize?
No. Bosch 8103 comes pre-gapped and has nickel plated threads, so no gap adjustment or anti-seize is needed. This listing is one spark plug.
Is this spark plug a resistor type?
Yes. It is a resistor plug with a copper core and an OE Fine Wire design that requires up to 24% less voltage to ignite.
What warranty covers the Bosch 8103 spark plug?
Bosch gives a 5 year customer satisfaction guarantee and a 1 year Technician Warranty. Details are at www.boschautoparts.com/sparkplugs.
