Hi Folks, Dont pay $62 AUD for a Genuine Husky O-Ring. Get a Viton O-Ring in size 341 from http://www.sealimports.com.au ~$7 each. This info is accurate for a 2008 TE 510 that has the Oval alloy pump mounting plate. I suspect it would be the same for ALL the range that uses the same oval plate with 6 screws holding it to the tank.