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cant locate seal, what axle is this?
Went to NAPA distribution warehouse to get a pinion seal for my 72 K20. Tech pulled every pinion seal listed for a 72 K20 but couldnt find the correct one. please see pics and let ne know what you guys think. # casted in housing is 3934685.. OD of seal is about 3 1/2 ID is 2 9/16. Shes a big one
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