Hi my hybrid Rx400h exhaust gasket before the middle silencer needs replacement. I checked those online parts diagram and it gives me part no 17451-22070. But when searching from suppliers website 22070 keeps coming up related to diesel engine but 17451-22060 its more for the Rx400h engine. From what i gathered, 22060 has a smaller outer diameter pf 68.5 while 22070 has a larger 77mm outer. Has anyone replaced this before and can advice on which one is correct? Thanks