This can be used on older 4, 6, and 8 cylinder gas engines up to around 2011 that have 5/8" spark plugs (except the M112 and M113 engines due to restriced access - see related products below). On some engines, you have very limited room to get to the rear sparkplugs. This may require a universal joint. You can use the short extension. You can use the long extension for quicker access to the ratchet wrench out in the open. The magnetic sockets will hold those plugs securely and not allow them to drop down under the engine.
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The magnet will keep the spark plug in the socket even when held vertically. The rubber added to the short extension can allow you to easily turn the spark plug in by hand.
You can choose one or two extensions depending on the length you need to access a plug. The silicone cover we put on the universal joint keeps it from flopping around when you are trying to get on a difficult-to-reach spark plug.
Related Products:
1960 to 1991 Ultimate Spark Plug Flexible Tool Set for 13/16" Plugs
This can be used on older 4, 6, and 8 cylinder gas engines up to around 1991 (end of W126). This works particularly well on the M116 and M117 V8s from 1972 to 1991. On some early V8s, you have very limited room to get to the rear sparkplugs. You can use the short extension.
Best Spark Plug Socket Combination for M112 V6 and M113 Spark Plug Removal
Kent has tried a lot of different socket and extension combinations, but for him, this one works the best. You will have multiple options to work in tight places.