The main fuel tank on most 22RE-equipped Toyotas is about 20 gallons (roughly 75 liters). Variations exist by model year, trim, and whether an optional second tank is installed. For precise figures, check your specific vehicle’s documentation or label.
Typical capacity of the main tank
The following outlines the common main-tank sizes you’ll encounter on 22RE-powered pickups and 4Runners.
- Main tank on most 22RE-equipped Toyota pickups and 4Runners: about 20.0 US gallons (75.7 L).
- Year-to-year variations: some configurations list around 20.5–21.0 US gallons (77.8–79.5 L) depending on factors like bed length or trim.
- Dual-tank configurations (optional on certain trims): when present, they add a second fuel tank, increasing total capacity beyond the main tank figure.
In practice, you should plan on roughly 20 gallons as the standard baseline. Exact numbers can vary by model year, body style, and whether an auxiliary tank is installed. Always confirm with the original spec sheet for your exact vehicle.
Dual-tank and configuration notes
Some 22RE models offered optional auxiliary fuel tanks or dual-tank setups. If your vehicle has one, total capacity will be higher than the main tank alone, and the combined figure depends on the second tank’s size and placement. This is more common in certain trims and regional editions, so verify via the owner’s manual or OEM documentation.
- Auxiliary tanks, when equipped, can add a meaningful increase to usable fuel range, but exact capacity depends on the specific installation.
- Not all 22RE models had a second tank; many relied on a single main tank.
For exact measurements, locate the tank specification label in your vehicle or consult the official service manuals for your year and model. This is especially important if you’re planning long trips or fuel-range calculations.
How to verify the capacity on your vehicle
Use these steps to confirm the tank size for your particular 22RE-equipped vehicle.
- Check the owner’s manual or the factory service/parts catalog for the exact year and model.
- Inspect the labeling on the fuel tank itself or in the rear wheel-well area where tank specs are sometimes stamped.
- Contact a Toyota dealership parts department with your VIN to pull the precise spec sheet.
Different body styles (short-bed vs. long-bed pickups, two- or four-door 4Runners) and regional variantings can affect the published capacity, so year-by-year confirmation is recommended.
Summary and takeaways
For most 22RE-powered Toyotas, plan on a main fuel tank of approximately 20 gallons (75–80 liters). Some configurations show slightly larger main tanks, and optional dual-tank setups can push total capacity higher. When exact numbers matter—such as for fuel planning or tank replacement—refer to the vehicle’s official specifications for your exact year, trim, and configuration.