Engine - Mercruiser NEW, 350 Mag, MPI, ECT, SeaCore, Bravo (#MercBob-350ECTSEA-B)
Part #: MercBob-350ECTSEA-B
This product is no longer available.
A new Mercruiser 350 Mag fuel injected bobtail marine engine with catalyst system to be used with a Bravo sterndrive.
Want Nothing But the Best?
Start at the Core.
Saltwater can take its toll on marine propulsion systems. This is why the SeaCore™ system from MerCruiser® offers more than just improved corrosion resistance. It’s as close as a marine propulsion system can come to being corrosion-proof.
In developing the revolutionary SeaCore system, we’ve moved the entire industry forward in a way that makes other saltwater engines and drives seem instantly inferior. Rather than just enclosing the drive components in a plastic shell, we protect them all the way to the core with industrial hardcoat anodizing, a closed-cooling system and widespread use of stainless steel components. All of which makes for the ultimate in corrosion protection.
Unique six-step coating and painting process and the hardcoat anodizing of Mercury's exclusive XK 360 low-copper aluminum parts changes the molecular structure of the surface, making it extremely durable and corrosion resistant. If scratched, the surface inhibits continued corrosion. It's particularly useful for large runabouts, cruisers and performance boats that stay in harsh saltwater environments. The freshwater flush system is engine-mounted.
Corrosion Protection
- Industrial hardcoat anodized XK 360 aluminum alloy for Bravo® running gear
- MerCathode® active corrosion protection
- Closed-cooling system with five-year long-life coolant seals engine from saltwater
- SeaCore stainless steel package
Better Warranty
- Four-year factory limited warranty for Installation Quality Certified Manufacturers* (three-year limited warranty for noncertified installations)
- Four-year limited warranty against corrosion failure*
Lower Maintenance
- 100/300-hour maintenance intervals
- Air-actuated raw-water drain
- Easy oil drain system
- Engine-mounted freshwater flush system – fish-friendly because no harmful chemicals used
- *U.S. and Canada warranty only.
Click here to go to the shim kit that is necessary to mount all new Mercruiser bobtail engines.
An adapter is required when repowering a boat and replacing an engine that had the old style 10 pin connector used up through approximately 2006. Click here to go the adapter.
| Power | 300HP (221 kW) |
|---|---|
| Full Throttle Range | 4800 - 5200 RPM |
| Displacement | 350 CID (5.7L) |
| Engine Type | V8 |
| Bore & Stroke | 4.00" X 3.48" (101mm X 88mm) |
| Compression Ratio | 9.4:1 |
| Fuel Requirement | 87 Octane (R+M)/2 |
| Engine Control System | ECM 555 with SmartCraft CAN Capability (PCM 555 w/DTS) |
| Fuel Delivery System | Gen II Cool Fuel-Alpha, Gen III Cool Fuel-Bravo |
| Fuel Injection System | Multi-Point Electronic Fuel Injection (Sequential Fuel Injection w/DTS) |
| Induction System | 2-pieceLong Runner intake with 75mm Throttle Body (80mm w/DTS) |
| Ignition System | Crank-fired High Voltage Switch w/Knock Control and Platinum Plugs |
| Charging System | 65 Amp/917 Watt Alternator |
| Water Drain System | 3-point Manual Drain (Bravo Models), Single Point Air-Actuated (Optional on Bravo Models), Single Point Manual Drain (Alpha Models) |
| Exhaust System w/ ECT | Iron Manifold with Ceramic Coated Dry-joint Exhaust Elbow |
| Cooling System | Thermostatically Controlled, Raw Water |
| Accessory Drive System | Serpentine Belt |
| Recommended Engine Oil | MerCruiser Full Synthetic Engine Oil - SAE 20W-40 |
| Engine Guardian System | Low Oil Pressure, High Coolant Temperature, Low Drive Lube, Low Sea Water Pressure, Low Voltage, Over-rev control, Knock Control |
| Alpha Ratios | 1.47 |
| Bravo One Ratios | 1.36, 1.50, 1.65 |
| Bravo Two Ratios | 2.00, 2.20 |
| Bravo Three Ratios | 2.00. 2.20, 2.43(H) |
| Dimensions (LxWxH) in | 32 x 30 x 22 |
| Dimensions (LxWxH) mm | 814 x 740 x 559 |
| Weight w/ Alpha (lbs./kg) | 946/430 |
| Weight w/ Bravo One (lbs./kg) | 987/449 |
| Weight w/ Bravo Two (lbs./kg) | 1004/456 |
| Weight w/ Bravo Three (lbs./kg) | 1013/460 |
| Digital Throttle and Shift | Optional |
| Optional Freshwater Cooling | Kit |
| CA 4-Star Emissions Control Model | Available |
| Options | |
| Fresh Water Cooling | Std. |
| Air-Actuated Water Drain | Std. |
| 3" Riser (without catalyst upgrade) |
MercOpt3R-1 |
| 4" Riser (with catalyst upgrade) |
MercOpt4R-1 |
| 4.7" Riser (without catalyst upgrade) |
MercOpt47R-1 |
| 6" Riser | MercOpt6R-1 |
| Digital Throttle and Shifting | MercOptDTS-1 |
| ECT Catalyst |
STD |
Go here to see our Mercruiser sterndrive rigging.
This engine comes with a limited 3 year corrosion warranty.
Select the following link to add the required Mercruiser Refundable Container Deposit to your cart. This Product/Container Deposit must be added to your cart when purchasing any Mercruiser Engine or Engine Package products. This deposit will be refunded after the container is returned back to Mercruiser at their expense.
For Hawaii, Alaska, or international shipping prices, please call.
Specifications and prices are subject to change without notice.