The ACCEL 0576S-4 is a four-pack of ACCEL HP shorty copper spark plugs. The shorty design trims overall length by 3/16 in to 3/8 in to open up air gap between the plug boot and the header or exhaust manifold, which helps prevent burnt boots and dimpled header tubes and makes install easier in tight spaces. 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 .460 in reach and tapered seat, heat range 6, preset to a .032 in gap, resistor type with a projected tip.
- Type: HP Copper Core, shorty
- Sold As: 4-pack
- Thread: 14mm
- Reach: .460 in
- Seat: Tapered
- Hex Size: 5/8 in
- Heat Range: 6
- Preset Gap: .032 in
- Resistor: Yes
- Projected Tip: Yes
- Gappable: Yes
- Part Number: 0576S-4
FAQ
How many spark plugs come in the ACCEL 0576S-4?
Four (a 4-pack).
What are the thread, reach, and seat specs?
14mm thread, .460 in reach, tapered seat, with a 5/8 in hex.
What is the heat range and gap?
Heat range 6, preset to a .032 in gap. The plugs are gappable if you need to adjust.
Why copper instead of platinum or iridium?
Copper conducts better and dissipates heat better, delivering a stronger spark in high-performance, high-pressure applications.
Is it a resistor plug?
Yes, it is a resistor type with a projected tip.
