O ring thickness

[1970 XLCH]

Anyone know what thickness the o ring is that goes between the engine & the primary on a '71 FLH ? I've got a James gasket set and there are three of them . Thanks , Mike

[pan620]

The ones I have in stock are Cometic and measure aprox. .070. It should be the the skinny one in you kit.

[Lyle Manheimer]

Be careful. If you use the wrong one, when you torque the inner primary, you will break the ear on the front of the primary. The thin one is the correct one.

[1970 XLCH]

Thank you for the help , Mike