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The Titan Fuel Tanks 4020217 After-Axle Auxiliary Fuel System is a 40-gallon, diesel-only auxiliary tank built from extra heavy-duty cross-linked polyethylene. Designed for 2017–2022 Ford F-350, F-450, and F-550 trucks (Regular, Extended, and Crew Cab), this system mounts after the rear axle to significantly extend driving range while maintaining full bed space.
40-gallon auxiliary fuel capacity
After-axle mounting for optimized space and weight distribution
Extra heavy-duty, cross-linked polyethylene construction
Compatible with Ford F-350, F-450, and F-550 (2017–2022)
Supports Regular, Extended, and Crew Cab models
Diesel fuel only
Corrosion-proof and impact-resistant tank design
Adds extended range without modifying the OEM tank
Retains full truck bed usability
| Specification | Details |
|---|---|
| Brand | Titan Fuel Tanks |
| Part Number | 4020217 |
| Product Type | After-Axle Auxiliary Fuel System |
| Fuel Type | Diesel only |
| Capacity | 40 gallons |
| Material | Extra heavy-duty cross-linked polyethylene |
| Dimensions | Not specified |
| Weight | Not specified |
| Mounting Location | After axle |
| Sending Unit Compatibility | Not specified |
| Transfer Method | Not specified |
Ford Super Duty (2017–2022):
Ford F-350
Ford F-450
Ford F-550
Compatible with:
Regular Cab
Extended Cab
Crew Cab
For diesel fuel only
Mounts after the rear axle
Does not interfere with bed space
