With a small spare parts kit, you can often solve simple problems yourself and avoid losing a day on the water. This checklist is useful for many common marine diesel engines, including Volvo Penta, Yanmar, Vetus, Perkins, Nanni and Solé Diesel.

Why Keep Engine Spare Parts On Board?

A marine diesel engine usually does not need much to keep running well, but when something fails, it often happens at the wrong moment. A simple fuel filter or impeller can be hard to find when you are away from your home marina.

Keeping the right spare parts on board is not about carrying a full workshop. It is about having the basic service parts that commonly stop a boat trip.

1. Spare Impeller

A spare impeller is one of the most useful parts to keep on board.

The impeller pumps raw cooling water through the engine. If it loses blades or becomes damaged, your engine can overheat quickly.

2. Fuel Filter

Fuel filters are important when dealing with dirty diesel or water contamination.

Fuel problems are very common on boats. Dirt, water or old diesel can block the fuel filter and cause power loss, rough running or an engine that stops completely.

3. Extra Engine Oil

Extra engine oil is always useful to have on board. Small leaks, oil consumption or a longer trip can make topping up necessary. Make sure the oil matches the specification recommended for your engine.

4. Oil Filter

A spare oil filter is useful for service or unexpected oil changes.

An oil filter is useful to keep on board, especially if you are making longer trips. If the oil becomes contaminated or you need to service the engine while away, having the right oil filter saves time.

5. Drive Belts

A spare belt is small, easy to store and can prevent serious trouble.

A worn or broken belt can quickly cause problems. On many engines, the belt drives the alternator and sometimes other important parts. If the belt breaks, your batteries may stop charging and your trip can become difficult fast.

6. Hose Clamps

Hose clamps are small, affordable and very useful. A loose or broken clamp can cause cooling water, exhaust water or fuel leaks. Keeping a few sizes on board is always a good idea.

7. Engine Fuses

Some engines use fuses for the starter circuit, glow plugs, alarms or engine electronics. A blown fuse can stop the engine from starting, even when the engine itself is fine.

Complete Service Kits

A service kit is often the easiest way to prepare your engine before the season starts.

If you want to make it easy, a service kit is often the best option. A good service kit usually includes the common maintenance parts for your engine, such as filters, impeller and seals.

This is especially useful before the season starts or before a longer trip.

Quick Spare Parts Checklist

Common Problems These Parts Can Help With

Before the First Trip of the Season

Before your first longer trip, take a few minutes to check the engine. Look at the oil level, coolant level, raw water flow, fuel filters, belt condition and any signs of leaks.

If a part already looks old or worn, replace it before leaving. It is usually cheaper and easier to service the engine in the marina than during a trip.

Need Help Finding the Right Part?

Every engine uses different service parts. A Volvo Penta D1 or D2 does not use the same parts as a Yanmar 1GM10, Vetus engine, Perkins, Nanni or Solé Diesel. Always check the engine model and part number before ordering.

If you are not sure which part fits your engine, MarinePartSystem can help you find the correct impeller, filter, belt or service kit.

Conclusion

Keeping the right spare parts on board is a simple way to prepare for the boating season. An impeller, fuel filter, oil filter, extra oil, drive belt, hose clamps and fuses do not take much space, but they can save your trip when something goes wrong.

Prepare your engine before the season starts, and keep the most important parts on board for peace of mind.