The ETK would have you believe that there are different cruise control cables for early and late E30’s, but that’s not true, 65711386243 supersedes 65711371394 and will fit both early and late cars.
One small note about orientating the cable correctly:
Reference this post on how to trouble shoot your cruise control, and instructions on how to remove the cruise control cable on the actuator side:
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Solid validation – I’m just about to undertake a cable replacement on my early actuator (rectifying old, cracked tabs on the TB attachment point). Glad to see this part is still in production!