Straight Up Heavy Duty Brass Radiator Coolant Expansion Tank Bleeder Screw And Drain Plug Replacement For Bmw X3 X5 With Premium Sealing O Ring Built Tough To Kill Rust

Single Pack Heavy Duty Brass Coolant Bleeder Screw Plug
✔️ Heavy duty brass seals cooling systems, includes premium o ring

This single pack radiator bleeder screw acts as a direct drain plug replacement for aging vehicles. Drivers install it when flushing antifreeze or removing trapped air from the cooling circuit. The sealed design stops leaks while keeping engine temps stable during daily commutes or towing loads.

✅ Direct oem number 17111712788 fitment guarantee
✅ Corrosion proof construction handles extreme heat cycles
✅ Threaded design secures fast without specialized tools
✅ Factory style rubber washer blocks fluid seepage immediately

💡 What causes coolant loss in older bmw radiators and how to fix it

Air pockets expand rapidly and push fluid past weak seals during normal operation.

A handy bleeder valve releases trapped gas before pressure builds up inside the tank.

Mechanics swap the plastic factory plug for hardened brass parts to stop slow drips near the firewall.

Drivers restore proper circulation flow and protect expensive water pumps from dry running damage.

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