
Champion N21 long reach spark plugs for the well known Petter A1, A2, W1 and W2 petrol engines. For series 2 engines produced 1951 onwards.
A direct equivalent of the Lodge BL14 or NGK B4ES plugs used in these engines.
Manufacturer | Champion |
Part Number | N21 |
Diameter | 14mm |
Reach | 19mm (3/4") |
Hex Size | 20.8mm (13/16") |
Seal Type | Gasket Seat |
Resistor | No |
Terminal Type | M4 Thread |
Electrode Material | Standard Nickel |
Projection Type | Non Projected |
Tip Configuration | Single Electrode |