Sierra Water Pump Kit 18-3257 for Suzuki DT 115/140 Outboard Engines (1986-01)

The Sierra 18-3257 Water Pump Kit is a complete replacement water pump kit engineered for Suzuki DT 115/140 outboard engines (1986-01). The water pump is the heart of your outboard's cooling system, drawing raw water from the lower unit and circulating it through the engine block to prevent overheating. When the impeller wears, cracks, or loses its vanes, cooling flow drops and the engine is at risk of running hot, so timely replacement of the full kit -- rather than the impeller alone -- keeps every wear surface fresh and cooling performance consistent.

This kit is assembled in Sierra's Illinois factory, and the impeller compound is formulated specifically for its size and application rather than using a one-size-fits-all rubber blend. The remaining kit components -- housing, gaskets, and hardware as included -- are built to meet or exceed the original equipment manufacturer's specifications, so the kit installs and performs like the original part it replaces. Sierra produces water pump kits across a wide range of outboard, inboard, and sterndrive applications, and this kit is the correct match for the Suzuki DT 115/140 outboard covered by part number 18-3257.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3257
• Product Type: Water Pump Kit
• Fits: Suzuki DT 115/140 (1986-01)
• Weight: 0.5 pounds
• Package Dimensions: 9 cm L x 13.7 cm H x 12.4 cm W
• Number of Items: 1
• Included Components: Water Pump Kit
• UPC: 808282185626

Fitment

• Suzuki DT 115/140 outboard (1986-01)

Frequently Asked Questions

What engines does the Sierra 18-3257 water pump kit fit? The 18-3257 water pump kit fits Suzuki DT 115/140 outboard engines (1986-01).

Is this a full water pump kit or just the impeller? Part number 18-3257 is a complete water pump kit, not a standalone impeller -- it includes the full set of components needed to rebuild the pump rather than just the wear part.

How many pumps or kits come in one order? Each order of the 18-3257 kit includes one complete water pump kit.

How much does the water pump kit weigh? The Sierra 18-3257 kit weighs 0.5 pounds.

What are the package dimensions of this kit? The 18-3257 water pump kit ships in packaging measuring 9 cm L x 13.7 cm H x 12.4 cm W.

Is the Sierra 18-3257 impeller compound the same for every application? No -- Sierra formulates the impeller compound in each kit based on the specific size and application, so the 18-3257 kit uses a compound matched to the Suzuki DT 115/140 water pump rather than a generic rubber blend.

Are the other components in the kit generic or OEM-matched? The housing, gaskets, and hardware included in the 18-3257 kit are built to meet or exceed the original manufacturer's specifications for the Suzuki DT 115/140 outboard.

Where is the Sierra 18-3257 kit manufactured? This water pump kit is assembled at Sierra's factory in Illinois.

Will this kit work on inboard or sterndrive engines? No -- part number 18-3257 is designated for the Suzuki DT 115/140 outboard engine (1986-01); Sierra makes separate kits for inboard and sterndrive applications.

Does replacing the full kit matter versus just the impeller? Yes -- because cooling performance depends on the housing, gaskets, and hardware as well as the impeller, replacing the complete 18-3257 kit ensures every wear surface in the Suzuki DT 115/140 water pump is renewed at the same time.