The Valve Guide (5 Pieces), For 4 stroke 9 HP  (186F) Diesel Power Tiller / Cultivator is an essential engine component that ensures the proper alignment and smooth movement of the intake and exhaust valves. 
Features
 :- cast iron or bronze alloy to withstand friction and heat from valve movement
 - Ensures proper alignment of intake/exhaust valves, reducing wear on valve stems and seats
 - Resists thermal expansion and abrasion from continuous valve operation