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1966-1970 Chevy Impala Sending Unit, 5/16" Line, part number M8110
CLASSIC PARTS GARAGE · SCHEMATIC
M8110
M8110Golden Star

1966-1970 Chevy Impala Sending Unit, 5/16" Line

1966–1970 Chevy Impala fuel sending unit with a 5/16-inch line, designed to help restore accurate fuel-level readings and proper fuel pickup operation. Ideal for replacing a worn, corroded, or malfunctioning original sending unit during fuel-system restoration.

In stock12 months

Not concours correct

Designed for 1966-1970 Chevy Impala applications using a 5/16-inch fuel line. Combines fuel-level sending and fuel pickup functions in the tank assembly. Matches the factory-style location and mounting purpose of the original sender.

$70.00
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003Specification

What it is

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M8110
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REV
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1966-1970 Chevy Impala Sending Unit, 5/16" Line Product Description: Shop 1966-1970 Chevy Impala Sending Unit, 5/16" Line when restoring your classic Chevrolet fuel system. A used Impala fuel sending unit can suffer from corrosion, worn electrical contacts, damaged pickup tubes, or inaccurate gauge readings. Order 1966-1970 Chevy Impala sending unit with 5/16-inch line from Classic Parts Garage when you need a dependable replacement for an aging original component. This fuel tank sending unit helps monitor the amount of fuel in the tank while supporting proper fuel pickup. It is a practical replacement when the original sender causes an inaccurate fuel gauge, inconsistent readings, or fuel delivery concerns. The 5/16-inch line configuration makes fitment verification important. Check your original fuel line size before ordering. Features: Fits applicable 1966-1970 Chevrolet Impala models 5/16-inch fuel line configuration Replaces worn, rusted, or malfunctioning original sending units Helps restore accurate fuel-level readings Supports proper fuel pickup from the tank Suitable for fuel-system restoration Designed for factory-style replacement applications Ideal for classic Impala restoration projects Specifications: Vehicle: Chevrolet Impala Model Years: 1966-1970 Product Type: Fuel Sending Unit Fuel Line Size: 5/16" Location: Fuel Tank Function: Fuel Level Sender / Fuel Pickup Application: Replacement / Restoration Installation: Tank-mounted replacement component Restore Reliable Fuel System Operation An aging sender can cause an unreliable fuel gauge or problems around the fuel pickup assembly. Replacing it during a tank or fuel-system restoration helps bring dependable operation back to your classic Chevy. This 1966-1970 Impala fuel sending unit is a practical choice for restorations requiring the 5/16-inch fuel line configuration.

Features
  • Fits applicable 1966-1970 Chevrolet Impala models
  • 5/16-inch fuel line configuration
  • Replaces worn, corroded, or malfunctioning original fuel sending units
  • Helps restore accurate fuel-level readings
  • Supports proper fuel pickup from the tank
  • Suitable for classic fuel-system restoration
  • Factory-style replacement application
  • Ideal for tank replacement and restoration projects.
In the box
  • 1 × Fuel sending unit with 5/16" line

Shipping weight 1.00 lb

004Application register

Everything this fits

1 application · 0 verified

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SUBJECT
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Chevrolet1
  • 1965–1970Impala
    All engines

Intended for applicable 1966-1970 Chevrolet Impala fuel tank applications. Verify your original fuel line uses the 5/16-inch configuration before ordering. Confirm tank opening, sender mounting style, and electrical connection match your existing setup. Vehicles with replacement tanks or modified fuel systems may require additional fitment checks. Gasket, locking ring, wiring, hoses, and related hardware may need to be reused or purchased separately. Inspect the fuel tank for rust, contamination, or damage before installation. Test the fuel gauge and sender operation before final assembly.

005Counter questions

Asked about this part

What vehicles does this sending unit fit?
This fuel sending unit is designed for compatible 1966–1970 Chevrolet Impala applications that use a 5/16-inch fuel line.
What does the 5/16-inch line size refer to?
It refers to the diameter of the fuel line connection on the sending unit. You should confirm that your original setup uses a 5/16-inch fuel line before ordering.
What does a fuel sending unit do?
The sending unit sits inside the fuel tank and helps measure the fuel level so the gauge can display how much fuel remains. It also provides the pickup point for fuel leaving the tank.
Will this fix an inaccurate fuel gauge?
It may if the original sending unit is worn, damaged, corroded, or no longer reading fuel level correctly. Wiring, grounding, the gauge itself, and other electrical issues should also be checked.
Will this fit a 1966 Chevy Impala?
Yes, when the vehicle uses the compatible tank and 5/16-inch fuel line configuration.
Will it fit a 1970 Chevy Impala?
It is intended for compatible 1970 Impala applications as well. Always compare the original sending unit and line size before purchase.
Does this sending unit include the fuel pickup tube?
The sending unit typically incorporates the pickup tube as part of the assembly. Check the product's In the Box details to confirm the exact supplied components.
Is the fuel tank seal or gasket included?
Included seals, gaskets, lock rings, and hardware can vary by kit. Verify the product contents before installation.
How do I know if my sending unit needs replacement?
Common signs include a fuel gauge that reads incorrectly, stays on empty or full, fluctuates unexpectedly, or stops working despite good wiring and gauge components.
Can a bad sending unit cause fuel delivery problems?
Yes. If the pickup tube or internal components are damaged or restricted, it can affect fuel flow from the tank in addition to causing gauge problems.
Is this compatible with the factory fuel gauge?
It is intended for compatible factory-style Impala fuel systems. Confirm that the sending unit resistance range and wiring match your vehicle's original gauge system.
Can I use this with an aftermarket fuel gauge?
Possibly, but the gauge and sending unit must use compatible resistance ranges. Check the specifications of your aftermarket gauge before installation.
Will this work with modified fuel systems?
It is primarily intended for factory-style fuel tank and line setups. Cars with electric fuel pumps, custom tanks, EFI conversions, or modified plumbing may require a different sending unit.
Should I replace the gasket when installing a new sending unit?
Yes. Using a fresh compatible seal or gasket is recommended to help prevent fuel vapor or fuel leaks around the tank opening.
Is professional installation recommended?
Professional installation is recommended if you are unfamiliar with fuel system work. Fuel is highly flammable, so proper ventilation, tools, sealing, and safety procedures are essential.
What should I check before ordering?
Confirm the vehicle year, fuel tank design, sending unit mounting style, electrical connection, and 5/16-inch fuel line size to ensure correct fitment.
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