The ACCEL P526S is a single ACCEL Double Platinum shorty spark plug. The shorty design trims overall length 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 eases install in tight spaces. Double platinum construction extends service life while holding a consistent spark, and the plug uses machine-rolled threads for precise engagement and torque retention. It is 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: Double Platinum, shorty
- Sold As: Single
- Thread: 14mm
- Reach: .708 in
- Seat: Tapered
- Hex Size: 5/8 in
- Heat Range: 6
- Preset Gap: .060 in
- Resistor: Yes
- Projected Tip: Yes
- Part Number: P526S
FAQ
Is the ACCEL P526S sold singly or in a pack?
It is sold as a single spark plug.
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.
What is double platinum good for?
Double platinum extends service life while holding a consistent spark, versus a standard copper plug.
Is it a resistor plug?
Yes, it is a resistor type with a projected tip.

