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Part # 18-4456
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Part # 18-4457
Price: $51.95
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Part # 18-4458
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Premium Protector Valves for wet exhausts are made of 100% durable EPDM that is extremely resistant to UV light, ozone, heat, and weather aging. For salt or fresh water. It will give the boat's exhaust system dependable protection in any harsh marine environment. Complete with stainless steel clamps.
Does this fit 87 carver 32?
This is designed to replace the following OEM Part Numbers: GLM 89250, Mallory 9-44001, Mercury Marine 12644A1.

Is this a 3 inch?
According to Sierra, this fits over a 3 inch valve. Meaning the I.D. of the part itself is a little larger than 3 inches.

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