Page 120 - REPOWER REFERENCE GUIDE (2020)

Cooling System

Seawater Pickups for SeaCore Bravo One and Bravo Three Sterndrive Engine Models

Seawater Pickups for SeaCore Sterndrive Engine Models
Boat speed with the boat fully SeaCore Bravo has side SeaCore Bravo has dual Through‑the‑hull or
loaded and operated within the water pickup water pickup through‑the‑transom
specified operating range seawater pickup

Not required
64 km/h (40 mph) or greater (See Note)

30180

Less than 64 km/h (40 mph) Required
(See Note)

30181 30180

Required
64 km/h (40 mph) or greater
(See Note)

30181

Greater or less than 64 km/h
(40 mph)
Models operated above the fiftieth Not required
parallel of the northern
hemisphere or below the fiftieth (See Note)
parallel of the southern
hemisphere. 30181 30180

NOTE: Refer to the Mercury MerCruiser Sterndrive Applications manual for details on installing the seawater supply hose or
the Y‑fitting.
Specifications—Bravo Models

Model Cooling Drive Engine Speed Minimum Flow Minimum Pressure
4.3L (262 cid) 50 L/min (13 gal/min) 59 kPa (8.5 psi)
5.0L (305 cid) Seawater cooling Bravo 4000 RPM 57 L/min (15 gal/min) 69 kPa (10 psi)
5.7L (350 cid) 65 L/min (17 gal/min) 75 kPa (11 psi)
6.2L (377 cid) 65 L/min (17 gal/min) 75 kPa (11 psi)
4.3L (262 cid)
5.0L (305 cid) 106 L/min (28 gal/min) 138 kPa (20 psi)
5.7L (350 cid) Closed cooling Bravo 4000 RPM
6.2L (377 cid)
8.1L (496 cid) 76 L/min (20 gal/min) 75 kPa (11 psi)
4.5L Engine‑Mounted Seawater Pump Output for a 15‑Second Period at 1000 RPM
Model Minimum Quantity
Bravo model with standard (seawater) cooling 8.8 L (9.3 US qt)
Bravo model with closed cooling and an external water pickup 11.0 L (11.6 US qt)

Page 4E-8 © 2019 Mercury Marine 90-8M0149179 eng NOVEMBER 2018