Collection: OBS Fuel System Swap

OBS Fuel System Swap parts for LS and LT engine swaps into 1988-1999 GM OBS/GMT400 trucks and SUVs — fuel pump modules, line kits, regulators, and filters compatible with both LS and LT builds. See OBS LS or OBS LT Engine Swap Parts for mounts and wiring. Need a fuel filter? Check the full Fuel Filters collection for the complete range of micron ratings and port sizes.