Product review (1 stars): Took it home and was shocked to find out the Sylvania works great
Let us save you some research. We called Frigidaire for a new light bulb and a new water filter for our fridge. Our refrigerator model number is LFUS2613LFO. They referenced 241555104 as part number for a 40 watt light bulb costing $30.97 with free shipping plus tax.  Cheapest on Amazon is $32.55 free shipping no tax.

We went to Lowe's and decided to take a chance on their Sylvania Multi Use 40 watt light bulb. If you notice on the picture on package it has a picture of a fan and a refrigerator on it. It cost $2.97 for a 2 pack of bulbs. Took it home and was shocked to find out it fit fine and works great. Why the MSRP Frigidaire version is over $30.00, we have no idea.

Conclusion: $1.50 or $30.00? Take a chance, save yourself some money and grab a 2 pack of the Sylvania Multi purpose 40 watt light bulb at your local hardware store. It fits just like the 241555401 light bulb, and is a heck of a lot cheaper.

Update: 4/18 Almost 2 years later and still using same replacement bulb in fridge. Definitely recommend.