Sierra 18-3243 Impeller Repair Kit, Replaces Suzuki 17400-94700, for DT20 Outboards

The Sierra 18-3243 Impeller Repair Kit is a complete water pump service kit for Suzuki DT20 outboard motors. Rather than buying individual water pump components separately, this kit bundles everything needed to service the pump in one job: a replacement impeller, a water pump gasket, and a water pump plate. Keeping the water pump impeller in good condition is critical to outboard cooling system health, since a worn or cracked impeller reduces water flow to the engine and can lead to overheating. This kit is a direct equivalent for the Suzuki OEM impeller repair kits 17400-94700 and 17400-94701, so it installs using the same fitment as the original Suzuki components without modification.

Each part in the kit is manufactured to meet or exceed the specifications of the original equipment it replaces. The kit is intended for routine water pump maintenance or replacement when an impeller has worn out, taken a set, or lost blade flexibility. Because the gasket and plate are included along with the impeller, technicians and DIY boat owners avoid the need to source individual gaskets separately during a pump rebuild.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3243
• Product Type: Impeller Repair Kit
• Compatible Model: Suzuki DT20
• Replaces (OEM): 17400-94700, 17400-94701
• Kit Includes: Impeller (18-3094), Water Pump Gasket (18-0460), Water Pump Plate
• Weight: 0.26 pounds
• UPC: 808282243920

Fitment

• Suzuki DT20 outboard motors

Replaces (OEM)

• 17400-94700
• 17400-94701

Frequently Asked Questions

What does the Sierra 18-3243 impeller repair kit include? The kit includes one impeller (18-3094), one water pump gasket (18-0460), and one water pump plate, giving you everything needed to service the water pump in a single kit.

Which outboard motors does the 18-3243 kit fit? This kit fits Suzuki DT20 outboard motors.

Does 18-3243 replace the Suzuki OEM part number? Yes, Sierra 18-3243 replaces Suzuki OEM part numbers 17400-94700 and 17400-94701.

Is this an OEM Suzuki part or an aftermarket part? Sierra 18-3243 is an aftermarket kit manufactured to meet or exceed the original Suzuki equipment it replaces, rather than a Suzuki-branded OEM part.

How much does the impeller repair kit weigh? The Sierra 18-3243 impeller repair kit weighs 0.26 pounds.

Do I need any other parts to complete a water pump service with this kit? No additional gasket or plate is needed since the 18-3243 kit already bundles the impeller, gasket, and water pump plate required for the job.

Will the individual parts in this kit work if only my impeller has failed? Yes, since kit 18-3243 contains the impeller (18-3094) along with the gasket (18-0460) and plate as separate components, allowing replacement of the impeller while the other parts are on hand for the same service.

How do I know if my Suzuki DT20 needs this impeller kit? If your Suzuki DT20 outboard shows reduced cooling water output, overheating, or has a water pump impeller that is worn, cracked, or has lost its shape, the 18-3243 repair kit provides the parts needed to restore the pump.

What part number should I search for to find this kit? Search Sierra part number 18-3243, which cross-references to Suzuki 17400-94700 and 17400-94701.

Is the water pump plate a wear item included in this kit? Yes, a water pump plate is included in the 18-3243 kit alongside the impeller and gasket so the full wear-prone assembly can be refreshed at once.