Early Bronco Fuel Tank

Early Bronco Fuel Tank Buyer’s Guide | 1966-77 Ford Bronco

Choosing the right Early Bronco Fuel Tank is one of the most important upgrades you can make to your 1966-77 Ford Bronco. Whether you're restoring a stock rig or building a trail-ready machine, the right 66-77 Ford Bronco Gas Tank affects your driving range, reliability, and fuel delivery performance.

From factory-correct replacements to high-capacity stainless upgrades, this guide breaks down your options so you can select the best fuel tank for your Bronco build.

Factory 66-77 Ford Bronco Gas Tank Setup

From 1966-77, Ford equipped Broncos with:

• Rear Main Fuel Tank – Approximately 13-14 gallons

• Front Auxiliary Tank (Optional) – Approximately 8 gallons

• Dual Tank Total Capacity – Around 21-22 gallons combined

While adequate in the 1960s, today’s driving habits, larger engines, and trail use often demand more range than the original Early Bronco fuel tanks provided.

If you're restoring a factory-spec Bronco, a stock-style 66-77 Ford Bronco gas tank is the correct solution. But if you want more miles between fill-ups, an upgrade is worth considering.

Types of Early Bronco Fuel Tanks Available

1. Stock Replacement Early Bronco Fuel Tank

A stock replacement 66-77 Ford Bronco gas tank is ideal for restorations or daily drivers that retain a carbureted setup.

Best for:

• Factory restorations

• Period-correct builds

• Replacing a rusted or leaking original tank

Benefits:

• Direct bolt-in fit

• Maintains factory appearance

• Compatible with OE-style sending units

• Works with carbureted fuel systems

If your original tank is rusty, contaminated, or leaking at the seams, replacing it with a new Early Bronco fuel tank restores reliability without changing the vehicle’s original configuration.

2. 23-gallon Early Bronco Fuel Tank (Long-Range Upgrade)

Many owners upgrade to a larger-capacity 23-gallon Early Bronco fuel tank to extend driving range. Our M1A1 rear tank more than doubles the usable fuel capacity compared to the stock 13-14 gallon rear tank.

Best for:

• Trail rigs

• Road trips

• Daily drivers

• Broncos with V8 swaps

Benefits:

• Increased fuel capacity

• Fewer fuel stops

• Better suited for modern driving

• Corrosion-resistant stainless steel

If you want to eliminate range anxiety in your 66-77 Ford Bronco, a larger gas tank is one of the most practical upgrades you can make.

3. EFI-Ready 66-77 Ford Bronco Gas Tank

If you’ve converted your Bronco to electronic fuel injection, your Early Bronco fuel tank needs proper baffling and fuel delivery support.

Our EFI-ready tank includes:

• Internal baffling to prevent fuel starvation

• High-pressure fuel pump

• Proper return line provisions

• Improved pickup design

While you can use a non-EFI tank with an inline fuel pump for your fuel injection conversion, choosing an EFI-compatible 66-77 Ford Bronco gas tank ensures more consistent fuel delivery on steep climbs, side hills, and rough terrain. The internal pump also keeps the fuel pump volume to a minimum resulting in a more enjoyable ride.

Steel vs Stainless Steel Early Bronco Fuel Tanks

Material matters when selecting your 66-77 Ford Bronco gas tank.

Steel Fuel Tanks

• Traditional construction

• Lower initial cost

• Can rust over time, especially in humid climates

Stainless Steel Fuel Tanks

• Corrosion-resistant

• Long-term durability

• Ideal for off-road use and long-term ownership

If your Bronco sees mud, water crossings, or sits for extended periods, a stainless Early Bronco fuel tank offers long-term peace of mind.

How to Choose the Right 66-77 Ford Bronco Gas Tank

Before buying, consider:

1. Intended Use

• Restoration → Stock-style Early Bronco fuel tank

• Daily driver → High-capacity upgrade

• Trail rig → EFI-ready and baffled tank

2. Fuel System Type

• Carbureted

• EFI conversion

• Future EFI plans

3. Desired Driving Range

The factory 13-14 gallon rear tank limits range significantly. A 23-gallon Early Bronco fuel tank dramatically increases miles between fill-ups.

4. Condition of Existing Components

When replacing your 66-77 Ford Bronco gas tank, inspect:

• Sending unit

• Fuel lines

• Vent hoses

• Tank straps

• Selector valve (dual tank setups)

Upgrading these components at the same time prevents future fuel system issues.

Common Questions About Early Bronco Fuel Tanks

What is the stock capacity of a 66-77 Ford Bronco gas tank?
The rear tank holds approximately 13-14 gallons. Broncos equipped with a front auxiliary tank add about 8 gallons.

Will a high-capacity Early Bronco fuel tank fit without modification?
Yes. Our aftermarket 23-gallon fuel tanks are designed as direct bolt-in replacements. They mount in the same location as the factory rear main gas tank, so clearance of exhaust and other components is generally not an issue.

Do I need a special tank for EFI?
Yes. EFI systems require proper baffling and high-pressure fuel delivery support. Choose an EFI-ready 66-77 Ford Bronco gas tank for best performance. If you plan on going to EFI at a later date but need a tank now, purchase our M1A1 23-gallon tank and it can be upgraded at a later date to support EFI with a simple change of the fuel pickup system.

Upgrade Your Early Bronco Fuel Tank with Confidence

Whether you’re replacing a rusted original or upgrading for more range, choosing the right Early Bronco Fuel Tank ensures dependable fuel delivery and better drivability. From factory-style replacements to high-capacity stainless options, the right 66-77 Ford Bronco Gas Tank keeps your Bronco ready for the highway, the trail, and everything in between.

If you need help selecting the correct tank for your build, our team is ready to help you choose the right setup for your 1966-77 Ford Bronco.