Nissan NI-51771-9 Radiator Cap Assembly With Quick Coupler
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Nissan NI‑51771‑9 – Radiator Cap Assembly with Quick Coupler (OEM Cooling System Service Tool)
The Nissan NI‑51771‑9 Radiator Cap Assembly with Quick Coupler is a genuine OEM service tool designed for accurate cooling‑system testing on Nissan vehicles. This specialized radiator‑cap adapter allows technicians to connect pressure‑testing equipment quickly and securely, ensuring precise diagnostics of leaks, pressure loss, and cooling‑system integrity.
Engineered to meet Nissan’s factory service specifications, the NI‑51771‑9 provides a tight, reliable seal and a fast‑acting quick‑coupler interface that integrates seamlessly with Nissan‑approved pressure testers. It is essential for performing cooling‑system inspections, radiator and hose leak checks, heater‑core diagnostics, and post‑repair verification procedures.
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