The heavy duty 50 Gallon Side Mount Polymer Reservoir from Buyers Products is lightweight, rustproof, and virtually maintenance-free. It's ideal for applications where weight is a factor, and great for short run dump applications. The reservoir is fully baffled to control fluid movement and to keep things cool. It features a sight level and temperature gauge and a raised anti-slosh fill neck with a quarter turn, 40 micron chromed filler cap.