part 63040609 Plunger d. 13 x 38.5 Interpump code 63040609 Details Interpump number63040609 DescriptionPlunger d. 13 x 38.5 ItalianPistone D. 13x38.5Qty per pump3 Fits these pumps Interpump 53 E1 series 8 E1E3106E1E3107E1E3108E1E3109E1E3110E1E3111E1E3112E1E3113