Threads measure 1-5/8" x 18 TPI

NOTE: Lowering the motorcycle will reduce ground and cornering clearance

For bike riders who prefer bolder styling

- Universal Compatibility: Featuring a 1/8 inch NPT thread

Included with the kit is:

Black 6V Square Coil 1948-60 Harley-Davidson Big Twins Subcategory_Primary Oil Threads measure 1-5/8" x 18These replicas of the square style stock coils come complete with mounting bracket, spark plug plug wires and spark plug boots. Available in gloss black or high quality chrome finish. Available in stock 6 Volt, but also for models which have been converted to 12 Volt. Replaces Harley Davidson OEM 31604 48. See Additional Information below for fitment. Specifications: Primary OHM Rate: 0. 85 0. 95 Secondary OHM Rate: 17. 5 18. 5 NOTE: Other mounting