103390 -

: A universal 3-inch flush valve kit by Lincoln Products used for toilet repairs.

: A custom platinum jewelry piece featuring oval purple amethysts, identified as Style #103390 .

💡 If you provide a bit more context (like if you're fixing a car or looking for a gift), I can find more specific details for you.

: A common replacement piece for Ford vehicles (like the Excursion and F-250/F-350 Super Duty, 5.4L V8 engines). It is often sold as a "one piece" kit under various brand names like YHTAUTO .