The ACCEL 578-6 is a six-pack of ACCEL HP copper spark plugs sized for the Ford 3.5L EcoBoost V6. The copper core conducts better than platinum or iridium for a stronger spark and better heat dissipation, which lessens the chance of misfire under boost. These are a stock heat range plug, 14mm thread with a 1.25 mm pitch, preset to a .030 in gap, resistor type with a projected tip. Torque them to 7.2 to 14.5 lb-ft on install.
- Type: HP Copper Core
- Sold As: 6-pack
- Application: Ford 3.5L EcoBoost V6
- Heat Range: Stock
- Thread: 14mm
- Thread Pitch: 1.25 mm
- Reach: 1 in
- Seat: Tapered
- Preset Gap: .030 in
- Torque: 7.2-14.5 lb-ft
- Resistor: Yes
- Projected Tip: Yes
- Part Number: 578-6
Vehicle Application: Ford and Lincoln 3.5L EcoBoost V6, 2010-2020.
FAQ
What engine does the ACCEL 578-6 fit?
The Ford 3.5L EcoBoost V6, used across Ford and Lincoln applications from 2010-2020. A six-pack covers the V6.
Is this the stock or a colder heat range?
Stock heat range. ACCEL also offers a one-step-colder version (578C1-6) for higher-output builds.
What gap and torque should I use?
Preset to a .030 in gap; torque to 7.2 to 14.5 lb-ft.
How many plugs are included?
Six, enough for one 3.5L EcoBoost V6.
Is it a resistor plug?
Yes, resistor type with a projected tip.
