OEM Waterway 2-Inch Heater Split Nut 400-5161B is a high-strength replacement component designed to secure plumbing connections in pool and spa heating systems. Constructed from durable PVC, this split nut offers reliable performance in chemically treated and high-moisture environments. It is compatible with most 2-inch heater tubes and features pre-drilled holes with included screws for fast and easy installation. Designed to form a tight, leak-resistant seal, this nut helps prevent water loss and supports efficient heater operation in both residential and commercial systems.

• Fits Most 2" Heater Tubes: Specifically made to connect securely with standard 2-inch heater plumbing, ensuring wide compatibility across heating systems.

• Heavy-Duty PVC Construction: Crafted from pool-grade materials that withstand heat, pressure, and prolonged exposure to chlorine and water.

• Seals Against Leaks: Provides a compression fit around the plumbing connection, helping to eliminate leaks and preserve system pressure.

• Screw-In Installation: Comes with two screws for a secure, no-hassle install that tightens the nut firmly in place with minimal tools.

• Reliable for Long-Term Use: Built for repeated exposure to pool environments, making it a lasting solution for maintenance or repair needs.

• (1)ÊSplit Nut
• (2) Screws

• Compatible with most 2" heater tubes

Find the Right Split Nut for 2" Heater Tubes

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Real Maintenance and Repair Search Queries

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Specs and Compatibility Lookups

fits most 2 inch diameter heater tubes and unions

includes screws for simple nut replacement

made from chemical-resistant pvc for pool use

split nut design allows install without cutting pipe

works on both residential and commercial systems