Products OthersSet selection Back Filter 256-07232-00 Description : Replacement filter only 21 Micron filter Product Fits : Mercury #35-60494-1 Mercury #35-807172 Aqua Power #6001 GLM: 24940 Sierra: 18-7850 You May Also Be Interested In Filter Mounting Head 256-07222- 00 Filter with Clear Bowl (Viton Gasket with O-Ring) // 256-60494-0D Semi-Concealed with Spring Hinge 956-06011-00 Hatch Latch 956-07920-00