Quicksilver 25-87400A2 Trim Cylinder O-Ring Replacement Kit for MerCruiser R, MR, Alpha One, Alpha One Gen II and Bravo Trim Cylinders RFMLPOLGEL3 Hole required to route through

Hole required to route through a bulkhead: 22mm (7/8in)

Use to prime and ready your engine cowl

which provides increased reliability

close the seacock and remove the quick-release plug

and the Garmin Marine Network

Quicksilver 25-87400A2 Trim Cylinder O-Ring Replacement Kit for MerCruiser R, MR, Alpha One, Alpha One Gen II and Bravo Trim Cylinders RFMLPOLGEL3 Hole required to route throughTrim cylinder o ring kit 87400A2 is for MerCruiser R, MR, Alpha One, Alpha One Gen II and Bravo trim cylinders. Product Details Manufacturer part number: 25 87400A2 11 piece kit to replace o rings on select MerCruiser sterndrive trim cylinders See your owner's manual and service manual for specific applications and instructions Easy to install using common shop tools For Mercruiser MCM 120R 260R Trim Cylinder Repair.