Specifications:

Mounting Hole Spacing: 102mm (4") (measured center to center)
Overall Length of Mounts: 116mm (4.5") (measured end to end)
Coil Dimensions: 79mm long x 47mm wide (3" x 1.8")
High Tension Wire Length: 21" (spark plug wire)
Low Tension Wire Length: 10" (Plastic Plug)