NGK-7164 Iridium 8.1L Spark Plug Set

TR55IX Replaces PCM-RP030009 & RP030011

Includes 8 Plugs

• 8.1L & MP 6.0L

• Premium NGK spark plugs are known for their reliable performance and superior anti-fouling characteristics
• 14mm thread size
• 18mm thread length
• Resistor
• Tapered seat
• Iridium
• Gap 0.059 in. or 1.5mm
• 5/8 in. or 16mm hex

• Replaces AC Delco 41-983
• Replaces Crusader RP030009
• Replaces Mercruiser 33-863622001
• Replaces Marine Power 810E-210
• Replaces NGK PZTR5A-15
• Replaces PCM RP030009
• Replaces Volvo Penta 3861326, 3861327

Recommended by the manufacturers for optimum performance, these spark plugs are the correct heat range for your marine engine