Certainly, happy to explain!
The Turbo steering wheels can be distinguished by their horn buttons visually. The 2002 Turbo steering wheel has a horn button with only the emblem as the push button, while the E21 steering wheels the entire center is the push button and quite bit thicker than the 2002 thin cover. The 2002 Turbo steering wheels have the part number 1113738 stamped at the inside of the hub to confirm as well. Also, the 2002 hub cover has two sections while the e21 has 3. So some subtle differences as well as different part numbers to confirm.
e21 wheel with thicker one-piece horn button
2002 Turbo wheel

Hope that helps! Clear as mud!
The Turbo steering wheels can be distinguished by their horn buttons visually. The 2002 Turbo steering wheel has a horn button with only the emblem as the push button, while the E21 steering wheels the entire center is the push button and quite bit thicker than the 2002 thin cover. The 2002 Turbo steering wheels have the part number 1113738 stamped at the inside of the hub to confirm as well. Also, the 2002 hub cover has two sections while the e21 has 3. So some subtle differences as well as different part numbers to confirm.
e21 wheel with thicker one-piece horn button
2002 Turbo wheel

Hope that helps! Clear as mud!