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Product Description Left Roof Spoiler Side Fin (Rocket-Type) | Part No. 3981730:
The “L” type roof air deflector (Part No. 3981730) is an aerodynamic fin installed on the side of the truck’s roof deflector system. Designed to reduce wind drag and improve airflow over the cab, this component enhances fuel efficiency and reduces wind noise. Built from high-impact resistant materials, it’s ideal for long-haul Volvo FH and FM series trucks.
Application: Enhances aerodynamic airflow by directing wind over the cabin’s roof.
Material: Reinforced polypropylene or ABS plastic, UV and impact resistant.
Compatible With: Volvo FH12, FH13, FM, FMX and other models with top roof deflectors.
Key Features Left Roof Spoiler Side Fin (Rocket-Type) | Part No. 3981730:
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“L” shape design for optimal air direction
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Easy to install with dedicated mounting brackets
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Durable under extreme weather and sun exposure
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Reduces fuel consumption and wind resistance
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