Tecnoseal 986158 / 3853930 OMC Cobra Small Block Anode

ID 1404257

$ 60.84

1-2 weeks delivery time

Type:

Zinc
Magnesium

Item:

150 g
600 g

The Tecnoseal OMC Cobra Small Block Anode is a sacrificial anode designed for OMC Cobra sterndrive units, corresponding to original OEM part numbers 986158 and 3853930. Available in zinc (00919) and magnesium (00919MG), both versions feature a rectangular, tapered block measuring 92 × 46 × 40 mm, with 51 mm mounting hole spacing, a 20 mm counterbore diameter and a 9.5 mm through-hole diameter. The zinc version weighs 0.60 kg (1.32 lbs), while the magnesium version weighs 0.15 kg (0.33 lbs). Both versions share the same mounting dimensions and provide sacrificial corrosion protection for compatible OMC Cobra sterndrive components.

Description
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Tecnoseal 986158 / 3853930 OMC Cobra Small Block Anode

The Tecnoseal OMC Cobra Small Block Anode is a sacrificial anode designed for corrosion protection of compatible OMC Cobra sterndrive components. It corresponds to original OEM part numbers 986158 and 3853930 and is available in two material versions: zinc (00919) and magnesium (00919MG).

The anode has a tapered rectangular block-shaped body with two mounting holes and recessed sections on the underside. Both versions measure 92 mm in length, 46 mm in width and 40 mm in height. The mounting holes have a centre-to-centre spacing of 51 mm, with a counterbore diameter of 20 mm and a through-hole diameter of 9.5 mm. The zinc version weighs 0.60 kg, while the magnesium version weighs 0.15 kg.

Technical Specifications

Manufacturer	Tecnoseal
Product Type	Small Block Anode
OEM References	OMC 986158 / 3853930
Compatibility	OMC Cobra Sterndrive
Available Materials	Zinc, Magnesium
Mounting Hole Spacing	51 mm

Available Versions

Tecnoseal Part Number	Material	Weight
00919	Zinc	0.60 kg (1.32 lbs)
00919MG	Magnesium	0.15 kg (0.33 lbs)

Dimensions

Dimension	Measurement
Length (l)	92 mm (3.62")
Width (a)	46 mm (1.81")
Height (h)	40 mm (1.57")
Mounting Hole Spacing (i)	51 mm (2.01")
Counterbore Diameter (Ø)	20 mm (0.79")
Through-Hole Diameter (Ø1)	9.5 mm (0.37")

Key Features

Sacrificial small block anode for OMC Cobra sterndrive applications.
Corresponds to original OEM part numbers 986158 and 3853930.
Available in zinc and magnesium versions.
Tapered rectangular body with two mounting holes and underside recesses.
Identical overall dimensions across both material versions: 92 × 46 × 40 mm.
Mounting hole spacing: 51 mm.
Counterbore diameter: 20 mm; through-hole diameter: 9.5 mm.
Zinc version weight: 0.60 kg; magnesium version weight: 0.15 kg.