The Gas Tank – 40 Gallon – Gas – 1987–1991 Chevy GMC Suburban is an OE-style replacement fuel tank engineered specifically for 1987–1991 gasoline engine Suburban models. Designed to restore factory fitment and maximum fuel capacity, this tank is correct for late Squarebody Suburban 2WD and 4WD applications equipped with gas engines.
Manufactured as an AMD OE replacement, this fuel tank is stamped from high-quality rust-resistant steel and finished with a protective zinc coating to help resist corrosion. Each tank features the correct factory-style shape, ribs, mounting holes, flanges, and curvature to match original GM production specifications. Accurate stamping ensures proper alignment with factory mounting locations and surrounding chassis components.
Unlike earlier non-baffled versions, this 1987–1991 gas application tank includes the correct internal baffle for fuel-injected (TBI) trucks, making it appropriate for late Squarebody EFI systems. Proper internal baffling helps maintain consistent fuel supply under acceleration and varied driving conditions.
All AMD fuel tanks are pressure tested for leaks prior to release, supporting reliable fuel containment and long-term durability. This tank replaces GM part number 15618963, restoring the correct 40-gallon configuration used in 1987–1991 gas-powered Suburban models.
With its substantial 40-gallon capacity, this tank provides extended driving range for towing, highway travel, or long-distance use while maintaining factory-correct underbody appearance. It is ideal for stock restorations, fuel system repairs, or capacity upgrades on late Squarebody Suburban builds.
Auto Metal Direct is a team of true car guys with years of experience in sheet metal reproduction, car restoration and paint/body work. We believe that quality is not subjective! Our mission is to provide the best customer experience for the Ford, Mopar and GM classic car markets - both in products and in service.
Our panels are made from proper gauge steel and include all correct-as-original clips, tabs, flanges, bends and seams. Each time a prototype body panel comes off of a new tooling, we test fit it on a car. The marked up prototype is then used to change and improve the tools, and a new prototype is produced. This procedure might be repeated multiple times but, once the part is finally approved, you can be assured of a quality part.
| Make | Model | Years | Fitment Notes |
| Chevrolet | Suburban | 1987 - 1991 | (GAS) |
| GMC | R1500 Suburban | 1987 - 1991 | (GAS) |
| GMC | R2500 Suburban | 1987 - 1991 | (GAS) |
| GMC | V1500 Suburban | 1987 - 1991 | (GAS) |
| GMC | V2500 Suburban | 1987 - 1991 | (GAS) |
| Brand | AMD |
| Height | 36.5 in |
| Length | 29.5 in |
| Weight | 48 lbs |
| Width | 16.5 in |
