Overflow Drain Tubes - Screw-in Tubes



  • Performs as a functional and economical overflow drain tube
  • Sure sealing of livewell / baitwell drain
  • Makes draining livewell / baitwell easier than a plug
  • Tubes available for multiple size fittings to cover every size of livewell drain
  • Custom lengths of tube available for boat builders to fit your livewell capacity
  • Aftermarket versions come with screen loose, so they can be cut to best length
  • Straight tubes are designed for draining through floor
  • 90 degree tubes are designed for draining through side wall

#1 CHOICE FOR LIVEWELL DRAIN TUBES IN THE INDUSTRY. T-H Marine pioneered the use of the overflow drain tube for boat livewells. The original overflow drain tubes are still the best in the industry. Our tubes provide a very functional way to plumb a livewell. Using our overflow tubes means you only need one hole in the livewell and one fitting to serve as both the overflow and the drain. Instead of reaching into the water and getting wet to pull a drain plug, you simply pull the tube out from the top and draining begins.

Outside diameter of 1 1/2" overflow drain tube boot and tube is 1 5/8", outside diameter of 1 1/8" overflow drain tube boot and tube is 15/16"

NOTE: Any tube can be cut to custom length for boat manufacturers. Specify the desired length by adding it at the end of any part number. For example, to request an 8" length of the ODT-1, the correct part number is ODT-1-8.


These overflow drain tubes feature a threaded end fitting that screws into a threaded thru hull drain. This means of securing the tube assures that the tube will not come out of the fitting in even the roughest conditions. To drain, simply unscrew the tube. A neoprene gasket provides a water tight seal.

OEM/Bulk Product Name Distributor Packaged
ODT-1-12GSTW-DP Fits 1-1/8" Threaded Drain - With Top Screen Glued - 12"L ODT-1-12GSTW-DP
ODT-1-12TW Fits 1-1/8" Threaded Drain - Straight - 12"L ODT-1-12TW-DP
ODT-2T Fits 1-1/2" Threaded Drain - w/Screen - Straight - 18"L ODT-2T-DP


  • Material: Marine Grade PVC
  • 1 1/2" Tube Outside Diameter: 1 5/8"
  • 1 1/8" Tube Outside Diameter: 15/16"

Customer Reviews

Based on 19 reviews

Works great and doesn’t giggle lose with the screw in standpipe

Captain S.
Good Product

This is well made and will work well. The strainer on top is NOT glued in place so the tube can be cut shortened if needed.

Michael M.

Overflow Drain Tubes - Screw-in Tubes

Taylor S.
Great product

Great product but the product details and selections could have been easier to figure out. The descriptions don’t match the product choices.

Parts from America,

Quality always shine’s through, glad I found you.
Many Thanks..
See you again- one day ;))

Let's Connect

Have An Issue?

Contact our Support team for more assistance.

Or call 256-772-0164

Stay In The Know

Sign up to join our mailing list.