Sierra Rubber Ring 18-0184, Replaces 804190, Clamp Ring Seal for Volvo Penta SP-A/DP-A/DP-B Drives and AQ Series Engines

The Sierra Rubber Ring, part number 18-0184, is a clamp ring seal used on Volvo Penta sterndrive units and inboard engines. It is a direct replacement for OEM number 804190, allowing it to be installed anywhere that original ring was specified without modification. The ring is made of white rubber, shaped to seat against the clamp ring where the drive leg joins the transom assembly or where the engine-side clamp ring is fitted, helping maintain a sealed connection at that joint.

This ring fits Volvo Penta drive legs including 275A, 280, 280DP, 280L, 285A, 290, 290A, 290DP, SP-A, SP-A/MT, SP-A1, SP-A2, DP-A, DP-A1, DP-A2, DP-B, and DP-B1. The same clamp ring design is also used on a wide range of AQ-series engines, so 18-0184 additionally fits 230A/SP-A/MT, 250A/SP-A/MT, 500A, 501A, 571A, 740A, AQ100, AQ105, AQ110, AQ115A, AQ110B, AQ120A, AQ120B, AQ125A/B, AQ130A/B, AQ131A/D, AQ175A, AQ190A, AQ200A/C/D/F, AQ210A, AQ211A, AQ225A/B/C/D/E/F, AQ231A/B, AQ240A, AQ255A/B, AQ260A/B, AQ271A/B/C/D, AQ280A, AQ290A, AQ311A/B, AQ60F, AQ80, AQ90, AQ95, AQD19, AQD29/A, and AQD32A. Each unit ships as a single ring weighing 0.57 pounds. Confirm your drive or engine model against this fitment list before ordering, since Sierra also offers a separate rubber ring, 18-8368, for a different clamp ring range.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-0184
• Product Name: Rubber Ring
• Color: White
• Material: Rubber
• Weight: 0.57 pounds
• Unit Count: 1 ring per package
• UPC: 808282188641
• OEM Cross Reference: 804190

Fitment

• Volvo Penta drive legs: 275A, 280, 280DP, 280L, 285A, 290, 290A, 290DP, SP-A, SP-A/MT, SP-A1, SP-A2, DP-A, DP-A1, DP-A2, DP-B, DP-B1
• Clamp ring fits: 230A/SP-A/MT, 250A/SP-A/MT, 500A, 501A, 571A, 740A, AQ100, AQ105, AQ110, AQ115A, AQ110B, AQ120A, AQ120B, AQ125A/B, AQ130A/B, AQ131A/D, AQ175A, AQ190A, AQ200A/C/D/F, AQ210A, AQ211A, AQ225A/B/C/D/E/F, AQ231A/B, AQ240A, AQ255A/B, AQ260A/B, AQ271A/B/C/D, AQ280A, AQ290A, AQ311A/B, AQ60F, AQ80, AQ90, AQ95, AQD19, AQD29/A, AQD32A

Replaces (OEM)

• 804190

Frequently Asked Questions

What does Sierra Rubber Ring 18-0184 replace? Part number 18-0184 replaces OEM number 804190, so it installs as a direct equivalent anywhere that original clamp ring seal was specified.

Which Volvo Penta drive legs use this clamp ring? The 18-0184 rubber ring fits clamp rings on 275A, 280, 280DP, 280L, 285A, 290, 290A, and 290DP drive legs, as well as SP-A, SP-A/MT, SP-A1, SP-A2, DP-A, DP-A1, DP-A2, DP-B, and DP-B1 legs.

Does the 18-0184 ring fit engines as well as drive legs? Yes, the clamp ring sealed by this ring also fits AQ-series engines including AQ100, AQ105, AQ110, AQ115A, AQ110B, AQ120A/B, AQ125A/B, AQ130A/B, AQ131A/D, AQ175A, AQ190A, AQ200A/C/D/F, AQ210A, AQ211A, AQ225A/B/C/D/E/F, AQ231A/B, AQ240A, AQ255A/B, AQ260A/B, AQ271A/B/C/D, AQ280A, AQ290A, and AQ311A/B, plus 230A/SP-A/MT, 250A/SP-A/MT, 500A, 501A, 571A, 740A, AQ60F, AQ80, AQ90, AQ95, AQD19, AQD29/A, and AQD32A.

What material is the 18-0184 ring made of? It is a rubber ring, sized to seat against the clamp ring on compatible Volvo Penta drive legs and AQ-series engines.

What color is the Sierra 18-0184 rubber ring? The 18-0184 rubber ring is white.

How much does part number 18-0184 weigh? The Sierra 18-0184 rubber ring weighs 0.57 pounds.

How many rings are included when ordering 18-0184? Each package of Sierra part 18-0184 contains one rubber ring.

Is 18-0184 a genuine Sierra part or a generic aftermarket seal? 18-0184 is a Sierra-branded rubber ring engineered to replace OEM number 804190, rather than a generic universal seal.

What is the difference between Sierra 18-0184 and 18-8368? Sierra 18-0184 replaces OEM 804190 and fits clamp rings on 275A/280/290-series drive legs and AQ100 through AQ311A/B engines, while Sierra 18-8368 is a separate rubber ring that replaces OEM 813967 and fits a different clamp ring range including 230A/SP-A/SP A1, 230B, 250A/B, 251A, 430A/B, 431A/B, 432A, 434A, 500B, 501B, 570A, and 572A. Match your drive or engine model to the correct part before ordering.

How do I confirm 18-0184 is the correct ring for my drive or engine? Check your model against the 18-0184 fitment list, which covers 275A, 280, 280DP, 280L, 285A, 290, 290A, 290DP, SP-A, SP-A/MT, SP-A1, SP-A2, DP-A, DP-A1, DP-A2, DP-B, DP-B1, and the AQ-series engines listed for its clamp ring; if your model is not on that list, a different Sierra rubber ring such as 18-8368 may be the correct part instead.