I have a 232SS, but- I'm guessing that the same bulb sizes are used throughout the KZ lines, as it's a standard rv bulb. It's called a "921" wedge base.
For LED replacement, you want a T10 (base size) 921 replacement. You'll typically see a few different numbers, such as 18-5050.
You will see the bulbs listed as a 30-5050, 15-5730, etc. The first number is the SMD (surface mount device) count which is how many of the individual led's are on the bulb. The second number is the size of each individual led. A 5050 is 5.0 x 5.0mm and so forth. Each size has a certain brightness so a bulb with a high number of smd's may not be as bright as one with a lower number of another size of smd.
For my replacements, I ordered 18-5050. I also used a "corn cob" style, which is shaped like a corn cob with leds all around, as opposed to, say, a paddle style, with leds only on 1 side. From there, you'll need to decide how "cool" or "warm" you want based on the Kelvin listed for the bulb. You can search the internet for a kelvin chart and decide what you want