BRIGGS & STRATTON Engine Ignition Coil For Models: 54 Horizontal + 40, 44, 49 Vertical BRIGGS & STRATTON 40N877-0004-G1 BRIGGS & STRATTON 40N877-0037-B5 BRIGGS & STRATTON 44U877-0012-B1 FEATURES: Hole spacing: 63.5 mm Diameter: 4.3 x 8.8 mm Reference : 3-323 Reference original code : 691060 To order the correct spare parts, you need to identify the model, type and part number of your machine. By clicking here you will find a link that can help you in your search. Briggs and Stratton