Pressure Washer Spare Parts and Accessories for Mac Allister and Titan. Most of our parts come from the original factory so you can be assured that the parts we sell are the same quality as the part you are replacing. In addition to stocking most Trigger Guns, Extension Lances And Hoses for your B&Q / Screwfix Pressure Washer, we also stock replacement O Rings, Hose Connectors and Nozzles. Titan TTB669PRW pressure washer spares and accessories are now in stock. This will be the first time that original Titan TTB669PRW spare parts and accessories have been available in the UK including hoses, guns, lances, nozzles and connectors.