Sierra 18-3076 Impeller Kit, Replaces Volvo 833995, Johnson Pump 09-45589 and 09-808B

The Sierra 18-3076 Impeller Kit is a neoprene water pump impeller built to restore raw-water circulation in marine engines fitted with a compatible Johnson Pump or Volvo pump housing. The impeller's blades draw and circulate raw water through the cooling system, and a worn, cracked, or heat-hardened impeller is one of the most common causes of overheating or reduced water flow. This kit replaces the impeller element inside the pump housing so the water pump can be serviced without purchasing an entirely new pump.

The impeller body is molded from neoprene, a synthetic rubber compound chosen for its resistance to heat, salt water, and repeated flexing of the vanes as they rotate against the pump cam. It is manufactured in Italy and packaged as a single impeller (1 count) in a compact 5.13 inch by 4.0 inch by 0.75 inch package. Because impeller vanes take a permanent set when a pump sits idle, replacing the impeller on a regular service interval, or as soon as flow drops or vanes show cracking, is the standard way to prevent downstream damage to the pump housing and engine cooling passages.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3076
• Product Type: Impeller Kit
• Material: Neoprene
• Exterior Finish: Machined
• Country of Origin: Italy
• Package Dimensions: 5.13 inches long x 4.0 inches wide x 0.75 inches high
• Weight: 0.04 pounds
• Number of Items: 1
• UPC: 030999315281

Fitment

Cross-referenced to Johnson Pump and Volvo raw-water pump housings as listed below.

Replaces (OEM)

• Johnson Pump 09-45589
• Johnson Pump 09-808B
• Volvo 833995

Frequently Asked Questions

What does the Sierra 18-3076 impeller kit replace? The 18-3076 impeller kit is cross-referenced to Johnson Pump 09-45589, Johnson Pump 09-808B, and Volvo 833995, so it can be used wherever one of those impellers is called for.

Is the Sierra 18-3076 a genuine Sierra part or a copy of another brand? 18-3076 is Sierra's own manufacturer part number for this impeller kit; it is cross-referenced to Johnson Pump and Volvo impeller numbers so buyers can confirm it is the correct equivalent for their pump.

What material is the impeller made from? The impeller in kit 18-3076 is molded neoprene, a synthetic rubber chosen for its resistance to heat and repeated flexing against the pump cam.

What are the dimensions of the 18-3076 impeller kit package? The packaged impeller measures 5.13 inches long by 4.0 inches wide by 0.75 inches high.

How much does the Sierra 18-3076 impeller weigh? This impeller kit weighs 0.04 pounds.

Where is the Sierra 18-3076 impeller manufactured? The 18-3076 impeller kit is manufactured in Italy.

How many impellers come in the 18-3076 kit? The kit contains one impeller (Number of Items: 1).

Does the 18-3076 impeller fit a Volvo 833995 pump? Yes, Sierra 18-3076 is cross-referenced as a replacement for Volvo 833995.

Does the 18-3076 impeller fit a Johnson Pump housing? Yes, it is cross-referenced to Johnson Pump 09-45589 and Johnson Pump 09-808B.

What is the UPC for the Sierra 18-3076 impeller kit? The Sierra 18-3076 impeller kit carries UPC 030999315281.