This fits:

1970-1972 Chevrolet Chevy II - Nova

 1970-1978 Chevrolet Camaro, Pontiac Firebird 

1970-1972 Chevrolet Impala, Bel Air, Caprice & Biscayne 

 This Listing is for ONE (1) New Reproduction Neutral Safety Start Switch part number NS3983965 & PP3961590 Tower Pole Piece. 

The TOWER POLE PIECE mounts to the brake support. The Switch mounts to the TOWER POLE PIECE and the hook end on the Switch goes through a hole in the clutch pedal.

This switch has been discontinued from some time now.
If doing a Restoration or Repair, then this is the part for you.

This switch was made from new tooling and is like the Original.

This switch is not NOS but is one of the Best Reproductions made.

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