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Components that seal the spark plug wells in the engine

The distance between the spark plug's electrodes

Electrodes that produce a spark to ignite fuel in an engine

The sparks that ignite the fuel-air mixture in an internal combustion engine

Wires that carry the high-voltage spark from the ignition coil to the spark plugs

System for generating spark or heat for engine combustion

Cables that carry the ignition signal to the spark plugs

The timing of the ignition spark, measured in degrees

Cover that protects the distributor and spark plug wires

Component that controls the ignition system, regulating the spark timing

A connector that attaches to a spark plug wire

Type of ignition system that uses electronic components to generate the spark

The sequence in which the spark plugs fire in a multi-cylinder engine

Coil that generates the high voltage needed to create a spark in the engine's cylinders

System responsible for generating the high voltage needed to create a spark in the engine's cylinders

An engine that circulates liquid coolant through passages and a radiator to carry heat away. Gerry’s Vanagon spark-plug reference lists DH water-cooled engines with Digijet for 1983–1985 and MV engines with Digifant for 1986–1991. Verify engine code, market, and model year; this archived table is an identification aid, not a complete application chart.

An engine that rejects heat directly to moving air rather than circulating liquid coolant. Gerry’s spark-plug reference separates bus applications by engine code and period: ED/GD/GE for 1975–1979 and CV for 1980–1983, including California models. A May 2002 Gerry discussion titled “83 Air Cooled - Production dates” concerns an owner’s September 1983 Westfalia and the difficulty of finding comparable 1983 examples; it is a period-specific production question, not a universal fitment chart.