The ACCEL 0526-4 is a four-pack of ACCEL HP copper spark plugs. The copper core conducts better than platinum or iridium for a stronger spark and better heat dissipation, which lessens the chance of misfire under high combustion pressure. The plugs are gappable and use machine-rolled threads for precise engagement and torque retention. They are 14mm thread with a .708 in reach and tapered seat, heat range 6, preset to a .060 in gap, resistor type with a projected tip.
- Type: HP Copper Core, standard length
- Sold As: 4-pack
- Thread: 14mm
- Reach: .708 in
- Seat: Tapered
- Hex Size: 5/8 in
- Heat Range: 6
- Preset Gap: .060 in
- Resistor: Yes
- Projected Tip: Yes
- Gappable: Yes
- Part Number: 0526-4
FAQ
How many spark plugs come in the ACCEL 0526-4?
Four (a 4-pack).
What are the thread, reach, and seat specs?
14mm thread, .708 in reach, tapered seat, with a 5/8 in hex.
What is the heat range and gap?
Heat range 6, preset to a .060 in gap. The plugs are gappable.
Why copper instead of platinum or iridium?
Copper conducts better and dissipates heat better, delivering a stronger spark in high-performance applications.
Is it a resistor plug?
Yes, it is a resistor type with a projected tip.

