Hey John, if you have never replaced the pump, then now is the time. The #10 Bosch is the updated version of the OEM #02 Bosch. It's the only one that is a direct replacement (i.e. P&P). The Johnsons and Cobras will need some modding to fit the OEM bracket and you'll need to rewire the connector. Plus some have complained that the higher flow rate of the Johnson and Cobra pumps may have caused some leaks. No complaints from those using the #10 Boschs, just nice sustained whine!