Die-cast aluminum construction

Fits: > 18-21 Softail (excl

Chrome plated brass body

Fits most H-D models with the head breathing system

KPMI, CUSTOM VALVE GUIDE SEALS. PTFE Mikuni Die-cast aluminum constructionSolid PTFE, with metal band and choker spring. Stem diameter: 5 16" (0,311"), valve guide diameter: 0,530"; over all length of seal: 0,506"; outside diameter of seal: 0,632". Kibblewhite Precision Machining custom valve stem seals are a quality product and suitable for any and all custom application. Note: Below mentioned valve stem diameters are for reference only. 36 84 B. T. = 3 8" (. 3750") 57 83 XL intake = 0. 3090" 57 83 XL exhaust = 0. 3384" 84