GHmarine Water Pump Impeller Kit for MerCruiser Alpha Bravo I-II-III – 46-807151A14/46-807151A7 Compatible

Keep your MerCruiser cooling system efficient with GHmarine

When you rely on MerCruiser Alpha Bravo drives, a dependable water pump is essential for steady cooling and reliable operation. The GHmarine Water Pump Impeller Kit with a plastic housing body is designed as a practical replacement option for MerCruiser Bravo I, II, and III, as well as TRS sterndrives and inboard engines that use a one-piece housing. This kit aligns with common configurations from 4.3L through 8.2L, offering broad compatibility that may fit a wide range of boat setups and maintenance schedules.

Key compatibility at a glance

• Sea Water Pump Impeller Kit compatible with MerCruiser Bravo 1, 2, 3, TRS sterndrives, and inboard engines with a one-piece housing.
• Engine fitment covers 4.3L, 5.0L, 5.7L, 6.2L, 7.4L, and 8.2L displacements.
• Cross-compatibility with common part numbers: Sierra 18-3150, GLM 12088, Mallory 9-48350, Quicksilver 807151A14 and 46-807151A7.

Bottom line: this kit is positioned as a direct replacement option that aligns with widely used MerCruiser and related engine variants, potentially helping maintain proper flow in the cooling loop when existing parts show signs of wear.

What you get and how it helps

• One-piece housing design for simpler installation and potentially quicker service on the water.
• Durable impeller and housing components crafted to fit compatible MerCruiser setups without extensive rework.
• Cross-brand compatibility that may simplify maintenance planning when you manage multiple engine configurations.

Real-world use and considerations

Boaters who notice aging pump performance or prepare a seasonal maintenance kit may consider this impeller kit as a practical upgrade. It’s described as a replacement option that supports continued cooling performance, rather than a guaranteed fix. Users can expect a straightforward swap that aligns with standard service procedures and keeps the cooling loop ready for weekend trips, fishing runs, or longer voyages.

Installation tips and care

Follow established safety practices, inspect the housing interface for a clean seal, and verify fitment before running the engine. After installation, perform a brief test to observe steady water flow and ensure confident operation on the water.

Choosing the right kit

• Confirm your engine family and model range (Bravo 1–3, TRS sterndrives, or one-piece housing inboard setups).
• Check cross-reference part numbers to ensure compatibility with your boat’s components.
• Consider the one-piece housing design for potentially easier and faster installations.