Keeps the oil from splashing out while timing the engine. I was able to see the timing mark. My timing light flashes pretty bright so I didn't have any problems. The plug is a little tricky installing and removing since the hole for my bike is in the bottom of a "V". The plug is clear plastic and I didn't want to scratch it using tools.
HONDA CIVIC &CIVIC DEL SOL L4 1.5L 94-95 REMAN ALTERNATOR 70A 13700/A5T06391,ZC
Jan 24, 2018
Quality is Excellent
This alternator fits just like OEM and worked without any charging problems.. The only issue that I had was that the threads to mount a bracket that secures the the original vehicle harness were stripped out. Although this does not affect the alternator operation, I prefer to keep the vehicle in its original configuration. I re-threaded it to the next size larger bolt hole to make it work. This alternator costs about 1/2 the price of what I found any where else. I would buy it again.