Waterskiing, wakeboarding and wake surfing: Cool.

Engine overheating: Not so much.

If you love watersports and your performance boat, show your boat the love by religiously changing the impeller. It plays a crucial part in delivering cooling water to your boats hard-working engine. If it fails, your engine could overheat, leaving you dead in the water and saddling you with big repair bills or maybe even the cost of a new engine.

Most experts recommend you change your impeller at the start of every season and more frequently if you use your boat hard or often. The PCM RP061022 Double Flat Shaft Neoprene Impeller Service Kit from Bakes Marine is commonly used on newer PCM engines.

Measuring two inches tall by 2 1/4 inches in diameter, this impeller fits on a double flat-sided shaft. It is used on the Excalibur 330, EX343 and ZR6 as well as the ZR409, 5.0L Pro Sport and GM 5.0L, 5.7L and 6.0L with a serpentine belt.