Post #5? Appears to be splined if you open the link. You may have meant post#2 but that seal in post #2 is also the incorrect seal for my aplication. Either way, the post was unable to confirm specifically that it was what I needed. Thanks for your input
Summit has the D3K picture on there, but the D3A is the unsplined version and is correct for K20's, as Prairie drifter said. The first review on summit for that part confirms that they received D3A, which was unsplined and did not match the picture(which is the problem with trying to order parts by the picture). The review gives it 1 star because the guy had ordered it based on the picture(because he obviously needed D2) and received the wrong part for his application.
Was the one that came out splined or not??? That's a splined slip yoke. Correct?
K20's are a splined yoke, but the part the seal rides on is smooth and not splined.
