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Keith, this item is for the earlier D311, D315, D318 water pumps originally for marine applications. This seal was used with a brass impeller. I have one of these units in a motor I rebuilt many years ago. The item was well used but still holding coolant. The motor had been originally for marine use but it was changed to be a power unit for a crane. Thre were many other items on the motor that were brass. Cheers, Larry.
PS. this style has not been used for years as you cannot get a brass impeller anymore, at least to my knowledge.
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12. Cat. p/n 6H3491 for a water pump bellows seal. Fits a lot of engines; D343, D346, D349, D379B, D398B, D399, G342, G353, G398 etc. $20.00
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