Electric Fuel Tank Selector Valve | Carbureted | 66-86 Bronco, 67-87 Ford Truck SKU: 9720

Will This Electric Fuel Selector Valve Fit My Ford Bronco or F-Series Truck?

If you're looking to replace a worn-out manual valve or modernize your dual-tank fuel system, an electric fuel selector valve can be a clean and functional upgrade. But before you hit the buy button, there's one question worth asking:

Will it fit your early Bronco or classic F-Series truck?

The answer depends on your truck’s fuel system type, engine setup, and hose size — and for most carbureted rigs from the late ’60s through the mid-’80s, the answer is: Yes, it likely will.

Here’s what you need to know.

Most Broncos and F-Series Trucks Used 5/16” Fuel Hose

From the fuel tank to the mechanical fuel pump, Ford used 5/16-inch inside diameter (ID) fuel hose in the majority of its carbureted vehicles between the 1960s and 1980s.

This low-pressure setup worked well for the inline-6 and small-block V8 engines of the day — and it’s the key reason why most early Broncos and classic Ford trucks are compatible with our electric selector valve.

Ford Bronco Fuel Hose Fitment: 1966–1986

• 1966–1977 Early Bronco
  These rigs all ran carbureted engines with mechanical fuel pumps and dual tanks (main and aux).
  The tank-to-pump plumbing relied on 5/16" rubber hose, including all models from 170 I6 up to 351W V8.
  If you’re running the stock-style setup, this valve will drop in easily.

• 1978–1986 Full-Size Bronco
  These models also used dual tanks and carburetors up through 1985.
  The 5/16" fuel hose remained standard in most configurations.
  Exceptions begin in 1985–1986, when 302 V8 engines with electronic fuel injection (EFI) became available — those systems require high-pressure 3/8" or larger lines and electric in-tank pumps, which are not compatible with this valve.

✅ Quick Take:
If your Bronco is carbureted and built between 1966–1985, this electric selector valve is a strong fit.
If it's EFI (especially ’86+), this valve won't work due to pressure and line size differences.

Ford Truck Fuel Hose Fitment: 1967–1987 F-Series

• 1967–1979 F-100, F-150, F-250, F-350
  All models were carbureted, with 5/16" fuel hose used between the tank and pump.
  Dual tanks became more common starting in the early ’70s, particularly on long-bed and Camper Special trucks.
  Even big-block engines like the 390 and 460 often retained 5/16” rubber hose at the connection points — though some may have had 3/8” steel lines further along the frame.

• 1980–1986 Trucks
  Still largely carbureted across the lineup, and 5/16" hose remained widely used for the fuel feed.
  Some California-spec or 460-equipped models may have used larger 3/8” lines, but the majority still used 5/16” at the tank and pump.

• 1987 F-Series
  This was a transition year.

  • The 4.9L inline-6 was still carbureted and may have used 5/16” fuel hose.

  • Most V8s (302, 351, 460) were EFI and used high-pressure, 3/8"+ lines with in-tank electric pumps — not compatible with this low-pressure selector valve.

✅ Quick Take:
If your F-Series truck is carbureted and built between 1967–1986, this valve should work just fine.
For 1987, it's only compatible with the carbureted I6 engine, not V8 EFI setups.

When You Might See 3/8” Instead of 5/16”

While 5/16” hose was the norm, Ford occasionally used 3/8” fuel lines in specific applications:

• 460 big-block trucks with high fuel demands

• California emissions builds

• Camper Specials or HD towing packages

• Any truck or Bronco that has been converted to EFI

In most of these cases, the rubber sections at the tank and pump were still 5/16”, even if some frame lines were 3/8”. But if your setup has been modified, it’s worth measuring.

Summary: Will It Fit?

Final Thoughts

If you're running a dual-tank, carbureted Bronco or F-Series truck from the 1960s to mid-1980s, there's a strong chance you're working with 5/16" hose, and this electric fuel selector valve is a perfect fit.

Just remember:

• EFI = High pressure = Not compatible

• Big block or emissions trucks = Measure your hose

• 1987 = Transition year = Double-check your setup

Still not sure what you’re working with? Give us a shout — we’re happy to help you figure out the right parts for your build.