1955-1976 All Makes All Models Parts | PF1024 | Stainless Steel Heater Hose Fittings - 1/2" NPT - 5/8" i.d. x 1-3/4" L with 1/2" L Pipe Plugs | Classic Industries
Fits Sable 3/4" Water Pump Heater Core Rubber Hose Caps Blockoff Plugs nos | eBay
Amazon.com: Partuto 1Pc 20mm 0.79" ID Universal Silicone Coolant Cap Intake Vacuum Hose End Plug - Car for Coolant Heater Bypass Vacuum Water Port - Silicone Blue : Automotive
CAP KIT, Heater Core / Heater Hose Block off, 3/4 inch diameter, (2) - #C-8854-60K - National Parts Depot
PPE 119020009 Stainless Steel Heater Hose Connector | XDP
Rubber Hose Plug For Coolant Line 3/4" 240Z 260Z 280Z | Z Car Depot Inc