This replacement Western Coil is a functional equivalent of the original coil. The difference is in the Outer Diameter which is .030" larger. It will fit over 2 of the valves but will not fit in the counter bore of the third valve. Other sellers of this coil do not notify their customers of this limitation. This is a Brand New Coil. It will also replace BOSS HYD01638 and FISHER 7639.
- Replacement Coil is made in the USA and meets most OEM specifications