Sea-Doo owners, this Caltric temperature sensor is exactly what you need if your watercraft is having cooling system issues or temperature gauge problems! It's compatible with a ton of models from 1997-2001 - we're talking GTS, GTX, GSX, Challenger, Speedster, and pretty much all the popular models from that era. The fit is precise, so installation is straightforward - usually just located near the cylinder head or exhaust manifold. Caltric is known for quality replacement parts, and this sensor feels solid - not some cheap knockoff that'll fail quickly. Having a properly working temperature sensor is crucial for preventing overheating damage to your engine, which can get expensive fast on these watercraft. The price is very reasonable compared to OEM, and the quality seems comparable. Whether your current sensor is giving false readings, has failed completely, or you're just doing preventative maintenance, this is a smart purchase. It's one of those components that seems small but plays a huge role in keeping your Sea-Doo running reliably season after season. The compatibility list is extensive, so chances are good it'll work with your specific model. For the peace of mind alone, it's worth having a spare on hand, especially if you ride in areas where help isn't readily available. Your engine will run better and last longer with accurate temperature monitoring!