GP7843A Faria/Mercury Fuel Gauge | Genuine Used Part

🔧 Product Description

Genuine Faria Titanium / Black Fuel Level Gauge - Factory Number: GP7843A

A genuine two-inch Faria fuel gauge with a black face, titanium or pewter bezel, white graphics and red pointer. The gauge is calibrated for the common US marine 33 Ω Full to 240 Ω Empty sender range used on many Mercury-powered boats.

⚙️ Key Features

• Factory number GP7843A
• 33-240 Ω marine sender calibration
• Approximately two-inch dash cutout
• Domed lens and illuminated dial
• Three threaded electrical terminals

🚤 Compatibility

• Mercury-, MerCruiser- and Mariner-powered boats using a standard 33-240 Ω tank sender
• Petrol or diesel tanks with the matching US marine sender curve
• Dash panels accepting an approximately two-inch cutout

🔌 Function

The gauge displays fuel level by measuring resistance through the tank-mounted float sender.

⚠️ Common Signs of Failure

• Gauge stays at Empty or Full
• Sender ground is open
• Gauge and sender curves do not match
• Needle moves intermittently
• Terminals are corroded
• Lens or illumination is damaged

🔄 Supersession & Cross Reference

OEM Supersession Chain

• GP7843A is the verified Faria factory number
• No Mercury OEM supersession has been confirmed
• This is a Faria boat-builder instrument rather than a Mercury service-numbered gauge

OEM / Related Numbers

• GP7843A
• CS0264 related production or boat-builder label found on some examples
• Related 33-240 Ω fuel sender
• Matching GP7846A Mercury trim gauge

Aftermarket / Verified Equivalents

• Faria 33-240 Ω two-inch fuel gauge - functional replacement
• Sierra / Teleflex US-range fuel gauge - functional replacement
• VDO 240-33 Ω marine fuel gauge - functional replacement
• Replacement appearance will differ unless GP7843A is used

📦 Condition

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