Hard-to-find marine wet-exhaust reducer coupler with T-bolt clamps, offered in used excellent condition. This is the type of heavy rubber adapter used to join exhaust hose, muffler outlets, elbows, risers, or bellows where two different hose diameters must be transitioned. Brand and part number are not marked/unknown, so please verify your required inside diameters and clamp ranges before purchase.
Comparable marine wet-exhaust reducers from Trident and Shields are commonly built from high-temperature EPDM or silicone/EPDM rubber. Trident black EPDM reducing bellows are described as molded high-temperature EPDM rubber rated for continuous service up to 250°F, with cuffs long enough for two hose clamps per end, and SS-suffix versions supplied with four wide stainless T-bolt clamps. Trident blue silicone/EPDM reducing hump hose versions are rated for higher-temperature wet-exhaust use up to 350°F and are intended to tolerate heat, engine movement, vibration, and minor misalignment. Shields/West Marine T-bolt exhaust clamps use a full 360° clamping surface, 3/4" band width, 316 stainless construction, and nylon-insert nut hardware for secure retention on large-ID marine exhaust hose. ([fisheriessupply.com](https://www.fisheriessupply.com/trident-marine-straight-reducing-exhaust-bellows-hump-hose/thhr-353ss))
Condition: used excellent. Rubber appears serviceable with no noted cuts, major cracking, or deformation; clamps are included. Ideal for boat repair, diesel wet exhaust, marine exhaust hose adapter, muffler reducer, and replacement boat parts applications. Marine-grade reducer couplers with clamps are increasingly valuable because new exhaust components and stainless hardware have risen sharply in cost and can be slow to source.
Buyer note: confirm fitment by measuring your hose ID/OD and checking your engine manufacturer’s exhaust back-pressure requirements before reducing exhaust diameter.
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