T-H Marine TH-1890T-DP 1-1/8" 90-Degree Threaded Thru-Hull Livewell Overflow Drain Fitting

The T-H Marine TH-1890T-DP is a 90-degree threaded thru-hull drain fitting designed for use with screw-in overflow drain tubes in boat livewells and baitwells. Measuring 1-1/8" in barb size, this short-profile black fitting provides a secure, threaded connection point that accommodates T-H Marine's screw-in style overflow drain tubes.

T-H Marine pioneered the livewell overflow drain tube system, and this threaded thru-hull fitting is the foundation of that system. By using a threaded connection, the drain tube locks firmly into the fitting and will not back out even in rough water conditions. A neoprene gasket on compatible screw-in tubes provides a watertight seal when the tube is installed.

Key Features:

• 90-degree angle — short-body design ideal for tight livewell wall installations
• 1-1/8" barb size — compatible with T-H Marine screw-in overflow drain tubes
• Threaded interior — accepts screw-in overflow drain tubes for a secure, rattle-free fit
• Black finish — blends cleanly into livewell and baitwell interiors
• Single-hole plumbing solution — one fitting serves as both the overflow and the drain
• Sold individually (package quantity: 1)

This fitting is intended for use with T-H Marine's screw-in overflow drain tube system, allowing the tube to be simply unscrewed from the top to drain the livewell — no reaching into the water to remove a drain plug. The TH-1890T-DP is a direct-fit replacement or new-build component widely used by boat manufacturers and DIY builders alike.