NGK Spark Plug P/N:3381

Upgrade tired nickel plugs with the NGK G-Power Platinum Spark Plug (manufacturer part number 3381, NGK type LZTR5AGP) — a single-platinum plug NGK positions as an economical step up from conventional nickel plugs. It fires the air-fuel charge in the combustion chamber, and its fine-wire platinum tip is designed to deliver improved fuel efficiency, lower emissions, faster starts, and quicker acceleration compared with conventional nickel plugs.

• Single platinum tip: a fine-wire 0.6 mm platinum center-electrode tip for improved durability and a consistently stable spark.
• Trapezoidal-cut ground electrode (J-gap): a reduced-quenching design intended to improve ignitability.
• Solid copper core: a 98% pure copper core for heat dissipation, conductivity, and a wide heat range.
• Cold-rolled threads: help prevent cross-threading and cylinder-head damage during installation.

Built specs: resistor plug rated 5000 ohm, heat range 5, tapered seat, M14 x 1.25 metric thread, 25 mm (0.984 in) reach, ceramic insulator, and non-removable-nut terminal. Pre-gapped at 0.040 in (1.0 mm); verify the gap against your engine's specification before installing. Washers are not included. Country of origin: United States. Quantity varies by application — some applications use 6 — so replace all cylinders as a matched set.

Manufacturer part number: 3381 (NGK type LZTR5AGP).