Exhaust Valve Guide. Fits Sportster 1957-Early 1983. Standard Outside Diameter Guide.

* Designed for Harley-Davidson heads

* Use with OEM style valve seals

* Cast Iron

* High temp viton o-ring seal

* Smooth lead-in

* CNC machined

* Guide ID unfinished – Requires honing

* OD = .5645″ Std size

* ID = .339″

* Replaces OEM # 18170-57B

MFR PART No: AV-VG5200
ROLLIES PART No: AV-VG5200