Champion 502 Spark Plug

Buick Series 40

4.2L L6 Gas OHV Copper Plus
Plug Type D21
Gap .025

6 Per Vehicle

Buick Series 50

5.4L L6 Gas OHV Copper Plus
Plug Type D21
Gap .025

6 Per Vehicle

Buick Series 60

5.4L L6 Gas OHV Copper Plus
Plug Type D21
Gap .025

6 Per Vehicle

Hotchkiss Gregoire

2.2L H4 Gas Copper Plus
Plug Type D21
with 18mm Diameter Threads
Gap .022

4 Per Vehicle

Nash Series 660

3.3L L6 Gas L-HEAD Copper Plus
Plug Type D21
Gap .025

6 Per Vehicle

Nash Series 870

3.7L L8 Gas L-HEAD Copper Plus
Plug Type D21
Gap .025

8 Per Vehicle

Nash Series 960

3.3L L6 Gas L-HEAD Copper Plus
Plug Type D21
Gap .025

6 Per Vehicle

Nash Series 970

3.7L L8 Gas L-HEAD Copper Plus
Plug Type D21
Gap .025

8 Per Vehicle

Pontiac Model 401

3.3L L6 Gas L-HEAD Copper Plus
Plug Type D21
Gap .025
OE Type

6 Per Vehicle

Pontiac Model 6-30 B

3.3L L6 Gas L-HEAD Copper Plus
Plug Type D21
Gap .025
OE Type

6 Per Vehicle