SE121 Complete Sterndrive Side Water Inlet (Replaces Bravo One®)

SE121 Complete Sterndrive Side Water Inlet (Replaces Bravo One®)

• SE121 Complete.
• Replaces Mercruiser Bravo One® with Side Water Inlets.
• OE# 5120136KZ
• Not a replacement for Bravo X,XR or XZ drives.
• Rated for up to 425HP.
• Does not include Install Kit or Anode Kit.

Brunswick Corporation is the Original Equipment Manufacturer (OEM). Sterndrive Engineering, Inc. (or SEI) has no affiliation with the Brunswick Corporation. Sterndrive Engineering, Inc. manufactures a stern drive designed to replace Mercury Marine's MerCruiser, Alpha One, R, MR, and Gen II stern drives. MerCruiser, Alpha One, Gen II, R, and MR are trademarks of the Brunswick Corporation. As with any after-market product, any warranties governing products manufactured and/or sold by Brunswick Corporation will not apply to products manufactured and/or sold by Sterndrive Engineering, Inc. (or SEI) or to products damaged due to the operation of an SEI product.

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Additional Information

Upgrade Your Vessel with the SE121 Complete Sterndrive Inlet

Maintaining your boat’s cooling system is vital for engine longevity. Therefore, the SE121 Complete Sterndrive side water inlet is a critical replacement part. This component is specifically designed to replace the Bravo One® side water inlet system. Because marine environments are unforgiving, you need parts that offer high durability. You can find this exact unit at macombmarineparts.com, your trusted source for marine supplies. Consequently, upgrading to the SE121 Sterndrive Inlet ensures your engine receives a steady flow of cooling water.

Why the SE121 is the Best Bravo One® Replacement

First of all, the SE121 is engineered to meet or exceed original equipment standards. Since it serves as a direct replacement for Bravo One® drives, installation is simple. In addition, the side water inlet design optimizes water pickup at various speeds. This feature prevents your engine from overheating during high-performance runs. Moreover, the high-quality materials resist salt-air corrosion and mineral buildup. As a result, you get a longer service life compared to standard aftermarket parts.

Expert Features of the SE121 Side Water Inlet

The SE121 unit features a precision-molded housing for a perfect fit. Specifically, it includes the necessary internal passages to maximize water volume. Because the water flow is consistent, your impeller and water pump face less strain. Furthermore, the exterior finish is designed to match your existing sterndrive aesthetics. This attention to detail is why professional mechanics prefer the SE121 for major repairs. Thus, you can restore your boat's cooling efficiency without paying premium OEM prices at Macomb Marine Parts.

Easy Installation for Faster Boating Seasons

Fortunately, you do not need complex modifications to install the SE121. Since it is a "drop-in" replacement, it fits existing mounting points perfectly. However, you should always inspect your hoses and clamps during the installation process. Once the new side water inlet is in place, your cooling system will perform like new. Consequently, you can avoid the headache of temperature alarms while out on the lake. Ultimately, this proactive swap is a smart move for any Bravo One® owner.

Trust Macomb Marine Parts for Your Ignition and Cooling Needs

When you shop at macombmarineparts.com, you get access to expert support and fast shipping. We understand that your time on the water is valuable. Therefore, we stock the SE121 Complete Sterndrive to get you back in action quickly. Our team selects only the most reliable brands for our customers. In conclusion, the SE121 provides the reliability and performance your high-powered boat deserves. Visit our website today to secure your replacement parts before the next season starts.

Frequently Asked Questions

Does the SE121 fit Bravo Two or Three drives?

The SE121 is specifically designed to replace the side water inlet on Bravo One® units. Therefore, you should verify your drive model before purchasing to ensure compatibility.

Is the mounting hardware included with the SE121?

Generally, the unit includes the main housing and internal components. However, you should check the product listing at Macomb Marine Parts for a full list of included hardware.

Why should I replace my water inlet?

Over time, debris and corrosion can clog the inlet passages. Since this restricts water flow, it can lead to engine overheating and permanent damage.

Can I install the SE121 while the boat is in the water?

No, this installation requires the boat to be out of the water on a trailer or lift. This ensures you can access the drive safely and seal the components correctly.