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Shield your Suzuki outboard from the costly damage caused by galvanic corrosion with these direct‑fit sacrificial anodes. Cast from marine‑grade zinc alloy, each anode is engineered to corrode before your engine's aluminum gearcase, cylinder head water passages, or transom bracket does. Whether you own a lightweight 3.5 HP kicker or a high‑output 300 HP V6, this selection covers every critical mounting point— steering rudder fins, gearcase torpedo blocks, engine head water jacket plugs, and transom lifting bars. Routine replacement of depleted anodes is one of the simplest and most effective maintenance tasks you can perform on a saltwater outboard. Swap them out during your annual water pump service or whenever you notice more than half the original material has been consumed, and you'll extend the working life of expensive engine castings by years.
| Material | Zinc Alloy (Marine-Grade Sacrificial Anode) |
| Compatibility | Suzuki Outboard Motors – 4‑Stroke (selected 2‑Stroke DT series) |
| Horsepower Range | 3.5 HP to 300 HP (select correct variant from menu) |
| Anode Types Available | Steering fin, gearcase block, engine head plug, transom lifting bar |
| Mounting | Uses original Suzuki hardware; reuse existing bolts or source separately |
| Inspection Interval | Every 50 hours or 3 months in saltwater; replace when ≥50% consumed |
| Application | Prevent galvanic corrosion on gearcase, cylinder head, transom bracket |
| Package Includes | 1 × sacrificial anode (hardware not included) |
| SKU | Anode Type / Location | Compatible Horsepower | Price |
| SZ-20-36HP-STEER | Steering Fin (Rudder Plate) | 20 – 36 HP | ¥65.00 |
| SZ-15-300-HEAD | Engine Head Water Passage Plug | 15 – 300 HP | ¥28.00 |
| SZ-9.9-15HP-STEER | Steering Fin (Rudder Plate) | 9.9 – 15 HP | ¥65.00 |
| SZ-60-140-GEAR | Gearcase Trapezoidal Block | 60 – 140 HP | ¥30.00 |
| SZ-70-250-STEER | Steering Fin (Heavy Duty) | 70 / 140 / 175 / 225 / 250 HP | ¥65.00 |
| SZ-9.9-300-SMALL | Small Cube Anode | 9.9 – 300 HP | ¥40.00 |
| SZ-60-300-LIFT | Transom Lifting Bar (Long Strip) | 60 – 300 HP | ¥95.00 |
| SZ-3.5-50-GEAR | Gearcase Torpedo Block | 3.5 – 50 HP | ¥21.00 |
| SZ-40-60-ANODE | Anode Block (Lower Unit) | 40 – 60 HP | ¥65.00 |
A: Match your engine's horsepower and the mounting location you need to replace. If you're unsure, check your existing anode by looking at its shape and where it's installed—then compare it to the variant photos and horsepower ranges listed in the compatibility guide above.
A: Inspect them every 50 hours of operation, or every 3 months if your boat stays in saltwater. Replace the anode when more than 50% of its original material has been consumed. In brackish or freshwater, replacement intervals can be longer—but regular inspection is still essential.
A: A small amount of marine grease on the bolt threads is fine to prevent seizing, but never grease or paint the anode surface itself. The zinc must make direct electrical contact with the metal it's protecting. Clean both mating surfaces thoroughly before installation.
A: You can replace them all at once—there's no benefit to staggering. In fact, replacing all anodes during your annual service ensures complete protection for the season ahead. Keep the old ones as spares only if they still have significant material remaining.
A: Once the sacrificial zinc is gone, galvanic corrosion will attack the next most vulnerable metal—typically your engine's aluminum gearcase, water passages in the cylinder head, or the transom bracket. This leads to pitting, expensive casting replacements, and potential engine damage.
