Mastercool 53376YF - Visual Inspection Sight Glass with R1234YF Quick Couplers Hex Bit Works on most spring hose

Works on most spring hose clamps

(1)T27 Guard

Services rear axle hub bearing retaining nut on heavy duty RAM trucks

Delete Table

Mastercool 53376YF - Visual Inspection Sight Glass with R1234YF Quick Couplers Hex Bit Works on most spring hoseQuickly Diagnose Refrigerant Contamination and Determine if A C System Flushing is Required Save time and prevent costly A C component failures by accurately inspecting the condition of refrigerant inside automotive air conditioning systems. The Mastercool Refrigerant Oil Visual Inspection Sight Glass allows HVAC and automotive technicians to visually inspect refrigerant, oil, dye, and debris contamination in R1234yf A C systems. The condition of