Sierra 18-3383 Water Pump Kit with Housing - Replaces OMC 395270 for Evinrude Outboards

The Sierra 18-3383 is a complete water pump kit with housing, built to bring full cooling-system function back to Evinrude and OMC outboard engines that use the original 395270 water pump. This kit is assembled to meet or exceed the original equipment manufacturer's specifications, so the housing, impeller, and internal hardware work together as a matched replacement rather than a mix of loose parts. The included impeller is manufactured from a compound formulated for its specific size and application, which helps it hold its shape and pump volume under continuous running conditions instead of wearing quickly like a generic, one-size-fits-all impeller.

Because the kit ships with the housing already included, installers do not need to source a separate housing or measure up a used one - the 18-3383 is built to drop in as a full assembly. This is the kind of part that keeps an outboard's cooling system running at factory-intended flow, which protects the powerhead from overheating. The kit is sold as a single unit containing the water pump housing and its impeller, and it carries a limited warranty.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3383
• Type: Water Pump Kit with Housing
• Material: Stainless Steel
• Weight: 0.74 pounds
• Package Dimensions: 6.604 H x 12.7 L x 11.684 W (centimetres)
• Country of Origin: China
• UPC: 030999753601
• Unit Count: 1
• Kit Includes: Impeller (Sierra 18-3051, O.E. 395289)

Fitment

• Evinrude and OMC outboard engines that use OMC water pump housing 395270

Replaces (OEM)

• 395270

Frequently Asked Questions

What engines does the Sierra 18-3383 water pump kit fit? The 18-3383 is designed for Evinrude and OMC outboard engines that use the OMC 395270 water pump housing.

Does 18-3383 include the water pump housing or just the impeller? Yes, the 18-3383 kit includes the full housing along with the impeller, so it is a complete water pump replacement rather than an impeller-only kit.

What OEM part number does the Sierra 18-3383 replace? This kit replaces OMC part number 395270.

What is the impeller in this kit made from and does it come separately? The kit's impeller (Sierra 18-3051, O.E. 395289) is included as one of the components inside the 18-3383 water pump kit, formulated to the size and application of this housing.

How much does the 18-3383 water pump kit weigh? The complete kit weighs 0.74 pounds.

Is the Sierra 18-3383 genuine OEM or an aftermarket part? It is a Sierra-manufactured aftermarket kit built to meet or exceed OMC's original specifications for the 395270 water pump, not an OEM-branded part.

What material is the impeller in the 18-3383 kit made of? The kit's components, including the impeller, use a stainless steel construction along with a compound-formulated rubber impeller matched to this pump's size and application.

Where is the Sierra 18-3383 water pump kit manufactured? The country of origin listed for this kit is China, with Sierra assembling and quality-checking its water pump kits at its Illinois facility.

What is included in the box with the 18-3383 kit? The box contains one complete water pump kit with housing, including the impeller (Sierra 18-3051, O.E. 395289) needed for the rebuild.

Does the Sierra 18-3383 come with a warranty? Yes, the 18-3383 water pump kit is covered by a limited warranty.

How many units come in one 18-3383 kit purchase? Each order of the 18-3383 water pump kit is for one complete unit.