So am going over my spares for the coach and I carry all the filters and backup fuel filters I think most do, but also opened up the big ammo can with all the weird stuff I carry. <br/>Coolant level switch. Will shut down eng<br/>Inlet air sensor <br/>Fuel screen and Multiple spare orings<br/>Six pack o ring<br/>Six pack rebuild kit<br/>Slide stow sender<br/>Bag of 15 amp fuses<br/>Allison speed sensor...