Intake valve guides are USA made and come in various sizes for Big twins 1948-1979.
*Sold each
18165-48 standard =.566 OD
18165-49 (.002) oversized =.568 OD
18167-49 (.004) oversized = .570 OD
18168-49 (.006) oversized =ย .572 OD
18170-49 (.008) oversized = .574 OD
18172-49 (.010) oversized = .576 OD
HD New#:18188-48, 18189-48, 18191-48, 18192-48







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