Skip to the beginning of the images gallery

Wet Exhaust Hump Hose Bellows, Reinforced VHT Blue Silicone 350°F, 4.00 Inch ID, Single Hump, 6.00 Inch Long

Description & Features

Constructed from high-quality reinforced VHT blue silicone the Wet Exhaust Hump Hose Bellows ensure longevity and resilience with a 350F temperature rating making it ideal for marine wet exhaust systems. Its 4.00 inch ID and 6.00 inch length offer a reliable fit in demanding applications while the single hump design provides increased flexibility and reduced noise.

This component is engineered to absorb engine movement and vibration providing smooth and quiet operation. It features a glossy blue finish that meets yacht exhaust standards and enhances engine room aesthetics. The smooth interior surface minimizes engine back pressure improving overall performance and efficiency.

Designed to comply with ABYC NMMA and ISO draft exhaust standards this hose bellows is suitable for marine environments. For optimal installation ensure it's positioned downstream from wet exhaust system water injections and secured with stainless steel clamps at each end.

MPN: 272V4000SS

Supplier Part Number: 272V4000-S/S

Specifications

Construction Reinforced VHT Blue Silicone 350°F	Brand Trident Rubber LLC	Brand Trident Rubber	Pack Size 1.00	UOM EA	Hose I.D. 4	Humps Single	Includes Clamps	Length 6.00	Supplier Part Number 272V4000-S/S	Temp. Rating 350	Alternate Part Numbers Alternate Part Number 272V4000-S/S, Alternate Part Number C1FT52	Product Weight 2.00 lbs

Similar Products

Model Number	Hose I.D.	Construction	Humps	Length	Hump O.D.	Minimum Clampable Length	Includes	Temp. Rating
272V3000SS Wet Exhaust Hump Hose Bellow	3	Reinforced VHT Blue Silicone 350°F	Single	6.00			Clamps	350
272V4000SS Wet Exhaust Hump Hose Bellow	4	Reinforced VHT Blue Silicone 350°F	Single	6.00			Clamps	350
THH3SS Wet Exhaust Hump Hose Bellow	3	Molded HT EPDM 250°F	Single	5.25	4.5	2	Clamps	250

Product Questions & Answers (3)

Question by: Frank R on Jan 4, 2026, 4:52 PM

got a 4 inch wet exhaust run and need a little give for engine shake, is this the single hump bellow the right size?

Answer by: Customer Support on Jan 6, 2026, 8:47 AM

For a 4.00 inch inside diameter connection, this bellows matches that ID and it is 6.00 inches long with a single hump meant to take up movement and vibration in a wet exhaust run.

Question by: Norm P on Aug 24, 2025, 12:42 PM

How hot can this hose get without it failing on me? I'm using it in a pretty tight space.

Answer by: Customer Support on Aug 25, 2025, 6:14 PM

This reinforced silicone hose can handle constant temperatures up to 350 degrees Fahrenheit, which makes it a good choice for high-heat areas in marine wet exhaust systems.

Question by: Rex M on Mar 24, 2026, 8:03 PM

clamps included with this or do I need to source them separate?

Answer by: Customer Support on Mar 26, 2026, 6:16 AM

Stainless steel clamps come included with the hose. For best results, each end needs a minimum of two clamps that are at least half an inch wide. T-bolt clamps at three-quarter inch wide or constant torque clamps at five-eighths inch wide are the recommended options if you ever need replacements down the road.