Mercruiser 454 Block Drain Plug Locations

Drain intake line at impeller and below oil cooler pull the 4 hoses off the thermostat housing.

Mercruiser 454 block drain plug locations.

Two on the block port and starboard sides. First season to winterize a recently purchased cruiser with rwc 454 crusaders. The plug i took out does not appear to be brass. In the future keep a 4 6 and 8 nail handy and thouroughly have at it with the scale as the water is pouring out of the drain.

My boat is a 454 mag and i know i have 5 plugs 3 port side 2 starboard side. Winterize your boat the family handyman easy oil drain kit quicksilver new oem blue drain plug kit 5 mercruiser br drain plugs p n block drain thre are rusted page 1 mercruiser manifold block drain plug kit michigan motorzwinterize your boat the family handymanblock drain thre are rusted page 1 iboats boating forums 552819drain plug read more. Drain block with 2 plugs 2. On my friends boat i could only see 4 2 port 2 starboard elbow fitting and engine block pe side.

I was going to winterize my friends boat 7 4 lx. Winterizing a stern drive boating 5 mercruiser br drain plugs p n 2001 baja boss 342 with 502 s serviced i have a mercruiser with mpd mercruiser 4 3l location of drain plugs page 1mercruiser 350 mag mpi drain plugs boat talk chaparral boatssingle point manual drain system mercruiser 4 3l marinesingle point manual drain read more. Drain exhaust manifolds by pulling 2 hoses 3. Fill block with antifreeze through big hose to recirc pump.

Yes the drain plugs being fouled with crud and scale is common. There s also a drain on the cool fuel system port side down around the bottom of the block towards the stern. Does anyone know how many drain plugs there are for the 7 4 lx.