Sierra Shields Vinylvent Marine Blower Hose - Available in 3 Inch and 4 Inch ID, 10 Foot Length

The Sierra Shields Vinylvent Blower Hose is a flexible marine ventilation hose used primarily for venting bilge fumes and for blower/ducting runs in engine compartments. The hose is constructed of black PVC (polyvinyl chloride) supported internally by an anodized wire helix, which keeps the hose round and open while allowing it to flex and route through tight compartments. It is resistant to UV and ozone exposure, making it suitable for the marine environment where hoses are subjected to sun, heat, and engine-bay conditions over time.

This hose line is sold in 10 foot lengths and is available in two inside diameters to match different blower and ducting hookups. The hose carries the Sierra part-number stem 16-402 and is a direct replacement or upgrade hose for boats that need to route ventilation ducting between the blower and the bilge or engine compartment.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 16-402
• Material: Polyvinyl Chloride (PVC) with anodized wire helix support
• Color: Black
• Length: 10 feet
• Inside Diameter Range: 3 inch to 4 inch
• Outside Diameter Range: 3 1/8 inch to 4 1/8 inch
• Primary Use: Venting bilge fumes and blower ducting
• UV and Ozone Resistance: Yes
• Weight: 0.65 pounds (3 inch) to 0.75 pounds (4 inch)

Sizes & Options

Choose the hose that matches the inside diameter of your existing blower fitting or ducting run: the 3 inch ID hose (outside diameter 3 1/8 inch) or the 4 inch ID hose (outside diameter 4 1/8 inch). Both sizes ship in 10 foot lengths and are black in color. Measure the inside diameter of the fitting or the hose being replaced before ordering, since the 3 inch and 4 inch versions are not interchangeable.

Frequently Asked Questions

What sizes does the Sierra Shields Vinylvent blower hose come in? The Sierra 16-402 Vinylvent blower hose is available in a 3 inch inside diameter and a 4 inch inside diameter, both in 10 foot lengths.

What is this hose used for? It is used primarily for venting bilge fumes and for blower ducting runs in a boat's engine compartment.

Is the hose resistant to UV and ozone? Yes, the Vinylvent blower hose is resistant to both UV exposure and ozone, which suits it for use in marine engine compartments.

What material is the hose made of? The hose is black PVC (polyvinyl chloride) supported by an anodized wire helix that keeps it round while allowing it to flex.

How long is each hose? Each Sierra 16-402 Vinylvent hose, in either the 3 inch or 4 inch diameter, is sold in a 10 foot length.

What is the outside diameter compared to the inside diameter? The 3 inch ID hose has an outside diameter of 3 1/8 inch, and the 4 inch ID hose has an outside diameter of 4 1/8 inch.

How much does the hose weigh? The 3 inch diameter Vinylvent hose weighs 0.65 pounds and the 4 inch diameter version weighs 0.75 pounds.

What color is the hose? Both the 3 inch and 4 inch versions of this Sierra Vinylvent blower hose are black.

Can this hose be used for engine compartment ventilation? Yes, the Shields Vinylvent hose is designed for venting bilge fumes and ducting airflow in and around the engine compartment.

How do I pick the right size for my boat? Measure the inside diameter of the existing blower fitting or hose being replaced; choose the 3 inch ID version or the 4 inch ID version of the 16-402 hose to match.

Is this a genuine Sierra part? Yes, this is a Sierra Shields Vinylvent blower hose under part-number stem 16-402, not a generic substitute.

Does the hose collapse or kink easily when routed through tight spaces? No, the anodized wire helix inside the PVC hose wall keeps the 16-402 Vinylvent hose open and round even when flexed around bends.