Outboard lower unit Mercury Mariner 3 & 4 cylinder 87-06

Outboard lower unit Mercury, Mariner 3 & 4 cylinder (1987-2006)

Replaces most Mercury lower unit 3&4 Cylinder 2-Stroke 1987 and newer 70-125 HP.

Outboard lower units  Mercury, Mariner  Our replacement Outboard lower units will fit Mercury, Mariner  Outboard Lower Unit 3 & 4 Cylinder 1987 and up, all at prices more than competitive. Our products are brand new; we do not sell remanufactured items.

In addition to receiving a 3-year warranty, we will send your items in the most respectable delays.

Replaces most Mercury lower unit 3&4 Cylinder 2-Stroke 1987 and newer 70-125 HP.

This unit will not replace a 3 jaw lower unit unless you also change the shift shaft in the midsection Replaces most Mercury lower unit 75-115 HP 4-Stroke below Serial #1B366822.
This replacement Mercury lower unit will only work if you have a 4-1/4 bullet diameter.
This replacement Mercury lower unit will not replace models with a plastic water pump housing.
You must verify your lower unitGear Ratio. 2.31 ratio is no longer available. 2.33 is the proper replacement.
You must verify your Mercury engine type, Two Stroke Carb, DFI (Direct Fuel Injection), or 4-stroke.
You must verify your shaft length. Your model # can also tell you the shaft size. An L is a 20″ and an XL is a 25″. If in doubt, please verify. There is also an LL model which is a 22.5 Inch Shaft.
We do not offer this shaft size Gear ratio Pinion tooth count Fwd. and Rev. tooth count 2.07 14 29 2.31 (NLA Use 2.33) 13 30 2.33 12 28 Figure 1(Below)