Fuel tank senders keep your Mack R truck’s fuel gauge working properly, so you always know how much fuel you have. If your gauge isn’t reading right or is acting up, it’s likely time for a new sender. These parts are built to handle the job, giving you accurate readings and peace of mind on the road. Stay on top of your fuel levels with a sender that’s made to fit and perform reliably. Find the best OE and aftermarket replacements online today at 4 State Trucks!