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We recommend a complete package for best results.  12 volt package consists of the electronic ignition unit, ThunderVolt III 55,000 volt coil, resistor to match the coil, 8mm spark plug wires to fit your tractor and set of spark plugs in the correct heat range for your application.  6 volt package includes the 6 volt electronic ignition unit, 6 volt coil, and 8mm spark plug wires.  PACKAGE NUMBER REFERS TO NUMBER OF ELECTRONIC IGNITION UNIT THAT FITS YOUR TRACTOR'S DISTRIBUTOR.

CLICK ON THE ARROW ABOVE FOR PACKAGE PRICES

• TRACTOR MODEL:  VA, 200B, 300, 300B, 310, 320, 350, 351, 400B, 430, 435LCK, 440, 441, 450, 470, 480CK, 500, 500B, 530, 535LCK, 540, 540C, 541, 541C, 570, 580CK, 640, 640C, 641, 641C
• CYLINDERS:  4
• DISTRIBUTOR MAKE:  AUTOLITE
• DIST #. IAD6003
• ROTATION:  CLOCKWISE
• 12 VOLT NEGATIVE GROUND

• TRACTOR MODEL: 470, 570, 680CK, 730, 740, 770, 830, 840, 870
• CYLINDERS: 4
• DISTRIBUTOR MAKE: PRESTOLITE
• DIST #. IBT-4402, 4403, 4404
• ROTATION:  COUNTER-CLOCKWISE
• 12 VOLT NEGATIVE GROUND

• TRACTOR MODEL: 930, 970
• CYLINDERS: 6
• DISTRIBUTOR MAKE:  PRESTOLITE
• DIST #. IBT-6404
• ROTATION:  COUNTER CLOCKWISE
• 12 VOLT NEGATIVE GROUND

• TRACTOR MODEL: 200B, 300B, 310, 400B, 420, 500B, 600B
• CYLINDERS: 4
• DISTRIBUTOR MAKE: DELCO
• DIST #. 1111908, 1111909
• ROTATION: CLOCKWISE
• 12 VOLT NEGATIVE GROUND

• TRACTOR MODEL: 200B, 300B, 310, 400B, 420, 500B, 600B
• CYLINDERS: 4
• DISTRIBUTOR MAKE: DELCO
• DIST #. 1111908, 1111909
• ROTATION: CLOCKWISE
• 6 VOLT POSITIVE GROUND

• TRACTOR MODEL:  730, 830, 740, 840, 900, 930
• CYLINDERS:  4
• DISTRIBUTOR MAKE:  WICO
• DIST # WICO DBX30091E
• 12 VOLT NEGATIVE GROUND