NGK 94051 SILZNAR6D9 Laser Iridium Spark Plug

The NGK 94051 Laser Iridium spark plug (service number SILZNAR6D9) is an OE-equivalent iridium replacement plug. It is built for strong ignitability and long service life. It has a laser-welded fine-wire iridium center electrode and a platinum ground electrode, which gives stable idle, good anti-fouling and a slow wear rate. It is a good fit for routine ignition tune-ups and for upgrades from conventional plugs.

Key Features:

• Iridium alloy center electrode: fine-wire design with a 0.6mm tip. Iridium is about six times harder than platinum.
• Platinum ground electrode: wears evenly and supports reliable spark performance.
• Copper core: a 98% pure copper core helps pull heat away and keeps the plug from overheating.
• Ceramic insulator: pure alumina silicate ceramic for strength and heat transfer.
• Trivalent metal plating: resists corrosion and seizing, so the plug installs and removes more easily.
• Corrugated insulator ribs: help prevent flashover.
• Triple seals: help prevent combustion leakage.
• Built-in resistor: 5,000 ohm resistor helps suppress radio-frequency interference.

Specifications:

• NGK part number: 94051
• Service number: SILZNAR6D9
• OEM cross-reference: GM 12637197
• Pre-set gap: 0.036 in (0.9mm)
• Thread diameter and pitch: 12mm x 1.25mm
• Thread reach: 25mm (0.984 in)
• Hex size: 9/16 in (14mm)
• Seat type: tapered
• Terminal: solid
• Heat range: 6
• Insulator height: 52.5mm (2.070 in)

NGK is a leading OE spark plug supplier, and this plug is made to original equipment standards for durability and performance.