NGK Spark Plug Set - GM Vortec - Carbureted or EFI Engines

Replaces PCM R030008A

• Includes 8 Plugs

• V-Groove Center Electrode = V-Power
• Indmar LT1
• NOT For LS1 - LQ9 - 8.1L Use Item: RP030009

NGKTR5 is a direct cross reference to the AC MR43LTS. Patented V- Groove center electrode improves ignition and reduces quenching

Premium NGK spark plugs are known for their reliable performance and superior anti-fouling characteristics

The Vortec 5.0 - 5.7 marine engines came out in 1996 but most manufacturers didn't start production until 1997. It's easy to find out if you have a Vortec Engine. The intake manifold bolts go straight down and the engines that are NOT Vortec, are installed at an angle.

• 14mm thread size
• 17.5mm thread length
• Resistor
• Tapered seat
• V-Power Type
• Gap 0.039 in. (1.0mm)
• 5/8 in. or 16mm hex
• Replaces AC Delco MR43-LTS
• Replaces Crusader R030008A
• Replaces Champion RS9YC
• Replaces Mercury 33-862029

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