Aluminum Mercruiser parts trim tab anode lower unit for salt water
GLM #12670 Mercruiser parts trim tab anode - aluminum OEM #31640T4 is used for salt water
#18-6141 for magnesium anode OEM 31640T6 used for fresh water
Trim
tab used for steering sterndrive
Anode stops or slow down electrical errosion of outdrive
12670 Mercruiser aluminum trim tab anode
# 12670 Aluminum anode trim tab OEM
# 31640T6 (Note: Requires bolt # 21740 not included) $9.29
12671 Magnesium trim tab anode
# 18-6241 Sierra magnesium anode trim tab OEM # 31640T6 for fresh water (Note: Requires bolt # 21740 not included) $16.29
Allen bolt for trim tab anode with 3/8 inch N.C. thread
# 21740 Allen bolts for anode
trim tab (2 units) $4.29
Tech tip: Anode or trim, can be moved to make up for steering pull from
outdrive. This drag will pull steering wheel to one side fo the boat but only when boat is on plane
