Second Hand Mercedes-Benz G-Class Fuel Tank

The G-Class has been built on a continuously developed platform since 1979, with a major redesign for the W464 generation launched in 2018 replacing the long-running W463 that ran from 1990; these two generations use fundamentally different bodyshells and running gear, so a tank from a pre-2018 W463 is very unlikely to suit a W464 car. Within the W463 generation itself there were running production changes, so even within 1990–2018 you should confirm with the breaker against your exact registration that the tank mounting and filler neck arrangement matches before buying.

Yes, fuel type matters directly: a diesel tank may differ from a petrol tank in its sender unit calibration, filler neck design, and sometimes overall dimensions, so you should always specify whether your G-Class is petrol or diesel when requesting a quote. Supplying your engine code from the V5 or a VIN check gives breakers the single most useful piece of information to find the right tank, as the engine code sits above the badge or trim name when matching mechanical parts.

Trim level does not drive fuel tank fitment on the G-Class; what matters is the engine code, fuel type, gearbox type, and the production year within the relevant generation. You may find cosmetic differences such as protective undershielding or skid-plate arrangements that differ between standard and AMG models, but the tank itself follows the mechanical specification rather than the trim designation, so do not rule out a tank from a different trim car if the engine code and year align. Confirm the specific part number against your registration with the breaker to be sure.

This question spans the key generation boundary: 2017 falls within the W463 generation (1990–2018) while a 2019 car is the newer W464 generation launched in 2018, and these are significantly different vehicles structurally, so cross-generation fitment is very unlikely. Stick to sourcing a tank from within the W463 range for your 2017 car, and ask the breaker to check the part against your exact VIN and engine code to account for any mid-run changes within that generation.

Gearbox type can influence tank design on some vehicles due to differences in tunnel and floor pressing, so it is worth mentioning to the breaker whether your car is automatic or manual. Confirm compatibility against your registration with the breaker, as mid-production ancillary and mounting changes are not always easy to identify from year alone.

The fuel tank itself is not typically an electronically coded component in the way an ECU or immobiliser unit is, so swapping a used tank does not usually require programming. However, if the replacement tank comes with a fuel level sender unit or fuel pump module attached, you should confirm with the breaker whether those ancillary components are included and compatible with your car's fuel system, as sender calibration can vary by engine and production date.