Rareelectrical OEM Grade Dual Fuel Air Pressure Gauge Compatible with Mercury Dfi Optimax Verado Outboard Sport Jet Schrader Valve Test Ports Mercury 852087A3 91-881834A1

OEM PART NUMBERS: Mercury: 852087, 852087A1, 852087A2, 852087A3 Mercury: 91-881834A1 / 881834A1 Mercury: 91-852087, 91-852087A1, 91-852087A2, 91-852087A3SPECIFICATIONS: Type: Dual Fuel/Air Pressure Gauge Function: Simultaneous fuel and air pressure testing Connection: Schrader valve test ports on fuel and air rails Platform: Mercury DFI Optimax, Verado, DFI Sport Jet Weight: 2 lbs Condition: NewAPPLICATIONS: Mercury DFI Optimax Outboards — All HP ratings Mercury Verado Outboards — 135, 150, 175, 200, 225, 250, 275, 300 HP Mercury DFI Sport Jet All Mercury outboard models equipped with schrader valve fuel and air test ports⚠️ Verify OEM part number from your original unit before ordering to ensure proper fitment. OEM Grade Dual Fuel/Air Pressure Gauge — Mercury DFI Optimax and Verado Professional-grade dual pressure gauge designed for simultaneously checking fuel and air pressure on Mercury DFI Optimax and Verado outboard engines. This diagnostic tool connects directly to the schrader valve test ports on both the fuel and air rails, allowing technicians to monitor both pressures at once for efficient troubleshooting. Essential for diagnosing fuel delivery issues, air compressor problems, and regulator malfunctions on Optimax DFI systems. The Optimax fuel system operates with fuel pressure approximately 10-15 PSI higher than air rail pressure, and this dual gauge allows quick verification of the correct pressure differential. Also compatible with Mercury DFI Sport Jet applications. Replaces Mercury 852087, 852087A1, 852087A2, 852087A3, and 91-881834A1. This item fits various applications by part number — always verify your OEM part number before ordering. New aftermarket unit built to OEM specifications for reliable pressure readings. Always verify your OEM part number before ordering to ensure compatibility.

• Compatible with Mercury. Please verify your OEM part number from your original unit to help ensure fitment.
• Replaces: Oem Part Numbers: / Mercury: 852087A3 / 852087A2 / 852087A1 / 852087 / Mercury: 91-881834A1 / 881834A1 / Mercury: 91-852087, 91-852087A1, 91-852087A2, 91-852087A3 / Specifications: / Type: Dual Fuel/Air Pressure Gauge / Function: Simultaneous Fuel And Air Pressure Testing / Connection: Schrader Valve Test Ports On Fuel And Air Rails / Platform: Mercury Dfi Optimax, Verado, Dfi Sport Jet / Weight: 2 Lbs / Condition: New / Application: / Mercury Dfi
• Applications: Mercury Dfi Optimax Outboards: / All Mercury Dfi Optimax Outboard Models / 75 Hp Through 300 Hp Optimax Dfi / 2.5L V6, 3.0L V6 Optimax Configurations / Mercury Verado Outboards: / Verado 135 Hp 4-Cylinder (2006+) / Verado 150 Hp 4-Cylinder (2006+) / Verado 175 Hp 4-Cylinder (2006+) / Verado 200 Hp 4-Cylinder / 6-Cylinder (2006+) / Verado 225 Hp 6-Cylinder (2006+) / Verado 250 Hp 6-Cylinder (2006+) / Verado 275 Hp 6-Cylinder (2006+) / Verado 300
• Applications: (2006+) / Verado 300 Hp 6-Cylinder (2006+) / / Mercury Dfi Sport Jet: / Sport Jet 200, 240, 250 Dfi / / Function: / Checks Fuel And Air Pressure Simultaneously / Connects To Schrader Valve Test Ports On Fuel And Air Rails / Essential Diagnostic Tool For Dfi Fuel System Troubleshooting / / Note: This Item Fits Various Applications By Part Number. Verify Oem Part Number Before Ordering To Ensure Proper Fitment. / ...
• Fuel / Air Pressure Gauge Source: Aftermarket