beeje ... the kit for 6K axles fit a front dust cap hole of 2.44". The rear seal is 3.37" OD by 2.25" ID. Call Kodiak @ 817-284-5141 and talk with them about 7K axles. The 2 piece seals are a bit harder to get in your hubs, but when it comes time to change oil ... unscrew the plastic cap, let it drain, replace cap, then refill hub via center plug. 10's of thousands of OTR truck trailers use these, so oil bath is not something new to fret over.
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