Crankshaft fits Sea-Doo - 4-Tec GTX 4 TEC /SC /GTX SC LTD/RXP/RXT/Sportster 4TEC 2003-2005

New SBT Brand Crankshaft.Fits - 421000670 New stretch bolts should be used to prevent both torque loss and possible engine failure when rebuilding an engine. Measuring the old bolts will not indicate how much strength has been lost during the engines heat cycle.