Volvo Penta Ih4 Duoprop Set Helical (21661944)

This Volvo Penta Duoprops IH Series has a dual counter produce unrivaled power, straight and accurate tracking, and quicker acceleration — a whole new boating experience. They are stronger and more durable than typical die-cast propellers due to squeezing casting and a specific high-strength aluminum alloy. Four coats of paint provide excellent anti-corrosion protection. Straight splines are used in type I, whereas helical splines are used in type IH. Only D3 diesel and 4.3L gasoline engines under 38 knots are approved for IH propellers. In engines with more than 240 horsepower or capable of speeds more than 38 knots, always use type F or FH stainless steel propellers (45 mph).

Key Features:

• Stronger and more durable than typical die-cast propellers due to squeezing casting and a specific high-strength aluminum alloy
• High-strength aluminum alloy is tough and long-lasting.
• Only D3 diesel and 4.3L gasoline engines under 38 knots are approved for IH propellers.

Specifications:

• Brand: Volvo Penta
• SKU: 21661944
• Weight: 18.12 lbs

Attaching Hardware

H88

Prop Nut Aft:
Other: 21631162
Prop Nut Front:
Other: 3851569

This product replaces:

• IH4
• IH4S

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