NGK Laser Platinum Spark Plug 12 mm Thread 26.5 mm Reach Gasket Seat - Stock Number 4471 BR20073 Map Timing Curve And A

Map Timing Curve And A Vacuum Advance

The 4770 features a 1

1964-1967 Oldsmobile 442 CID 364 CC 5967 6

1987-1991 GMC V3500

External ECU

NGK Laser Platinum Spark Plug 12 mm Thread 26.5 mm Reach Gasket Seat - Stock Number 4471 BR20073 Map Timing Curve And AProduct Description: Spark Plug NGK Laser Platinum 12 mm Thread 26. 5 mm Reach Gasket Seat Stock Number 4471 Resistor Sold Individually With over 80 years of automotive expertise, we are driven by extreme dedication to performance and quality. From OEM to aftermarket, our people push the boundaries of innovation to bring the latest technologies to market under the NGK and NTK brands. Since 1936, NGK Spark Plugs has been the world leader in technology,