Description
NGK 90410 is the LKR6E-9N standard nickel-electrode resistor spark plug. It uses a long-reach, 12 mm threaded shell and a flat gasket seat, making it distinct from shorter-reach and tapered-seat spark plugs.
Specifications
| NGK stock number | 90410 |
|---|---|
| Plug designation | LKR6E-9N |
| Thread | M12 x 1.25; 26.5 mm (1.043 in) reach |
| Hex size | 16 mm (5/8 in) |
| Seat | Flat gasket seat |
| Supplied gap | 0.9 mm (0.036 in) |
| Heat range / terminal | NGK 6; non-removable terminal |
| Electrodes | Conventional nickel design with copper core; resistor type |
Applications and compatibility
Confirm the exact engine specification for LKR6E-9N before purchase. The 26.5 mm thread reach and gasket seat are essential fitment requirements, and generic 12 mm spark plugs are not substitutes.
Package and installation notes
One standard spark plug per unit ordered. This is a conventional NGK standard plug, not an iridium or platinum upgrade; use the manufacturer's specified tightening torque.
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