If your Acura or Honda's HVAC blower only works on certain speeds – or not at all – this blower motor resistor is likely the culprit.
It's a 4-pin blade-style resistor that fits a bunch of models: Acura RL, TL, ZDX, and Honda Odyssey and Ridgeline from roughly 2005 through 2014.
The OEM numbers it crosses with are 79330SJK003 and 79330SJK941, plus interchange RU596 and supersessions like 973-117, 4P1665, 4P1678, and 53-69900.