79-895289A01 Mercury Oil Gauge | Genuine Used Part

🔧 Product Description

Genuine Mercury Quicksilver Flagship 0-80 PSI Oil Pressure Gauge - Part Number: 79-895289A01

A genuine used Mercury Quicksilver Flagship oil-pressure gauge for compatible MerCruiser petrol engines and Mercury four-stroke outboards fitted with a matching resistive pressure sender.

The gauge uses a 0-80 PSI scale, anti-fog lens, black face, black bezel and approximately 2-1/8-inch / 54 mm mounting opening.

⚙️ Key Features

• Genuine Mercury Quicksilver OEM Flagship oil-pressure gauge
• Correct current Mercury part number 79-895289A01
• 0-80 PSI pressure scale
• Anti-fog lens with marine-grade illuminated construction
• Complete 825288A1 / 859689A1 / 895289A01 supersession family

🚤 Compatibility

Commonly used on

• MerCruiser petrol sterndrive and inboard oil-pressure systems
• Mercury and Mariner four-stroke outboards using a matching oil-pressure sender

Typically suits

• Engine models:
• MerCruiser 4-cylinder petrol sterndrive and inboard engines with a compatible 0-80 PSI sender
• MerCruiser GM V6 petrol engines with a compatible resistive oil-pressure sender
• MerCruiser GM and Ford V8 petrol engines with a compatible resistive oil-pressure sender
• Mercury / Mariner four-stroke outboards fitted with an analog oil-pressure sender and Flagship instrumentation
• HP Range: Not restricted by horsepower; sender and pressure range controlled
• Engine Type: MerCruiser petrol inboard / sterndrive and compatible Mercury four-stroke outboard
• Year Range: Approximately 1990s - 2000s

🔌 Function

The gauge displays engine lubricating-oil pressure using the resistance signal from the installed sender. It allows the operator to identify normal pressure after start-up and dangerous pressure loss while running.

⚠️ Common Signs of Failure

• Gauge remains at zero despite verified engine oil pressure
• Gauge reads maximum pressure with the sender wire disconnected or shorted
• Needle fluctuates because of a poor sender ground
• Reading is inaccurate because the sender resistance is mismatched
• Internal movement or illumination fails

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 79-895289A01 → Supersedes 79-859689A1
• 79-859689A1 → Supersedes 79-825288A1
• 79-825288A1 earlier OEM oil-pressure gauge reference

OEM / Related Numbers

• 79-895289A01
• 895289A01
• 79895289A01
• 79-859689A1
• 859689A1
• 79-825288A1
• 825288A1
• 745061650893

Aftermarket / Verified Equivalents

• Sierra: 57903P - Amega 0-80 PSI oil-pressure gauge
• Sierra: 59705P - 0-80 PSI oil-pressure gauge
• Veethree: 62720P - Premier Pro 0-80 PSI oil-pressure gauge
• Stewart-Warner: 82113 - Deluxe 0-80 PSI oil-pressure gauge

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated