<x-charset iso-8859-1>BenD=>I thought they just screw directly into the cooler? The block allows more clearance between the pressure sensor and the air cleaner. Fiber washers are fine. Steven Ayres, Prescott AZ '66 KG1600 ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/ </x-charset>