Durable and reliable fuel pump designed for outboard engines Durable construction: Made of durable materials, this fuel pump is built to resist wear and deformation and to maintain performance across a range of operating conditions. Easy installation and user friendly: The unit installs quickly and easily with standard hand tools. Clear instructions are provided to guide you through a seamless replacement. Wide compatibility: Compatible with a range of outboard models. Please refer to the included pictures and verify OEM numbers 438559 or 0438559 before to ensure proper fitment. Function, size, and material: Function: fuel delivery pump that supports reliable engine operation. Material: durable materials. Size: dimensions are shown in the product images. Performance: Delivers steady fuel flow under normal operating conditions to help prevent fuel starvation and support smooth engine performance. Use scenarios Routine maintenance replacement: Swap in this pump during scheduled service to restore reliable fuel supply to your outboard engine. Marina or service center spare: Keep as a ready spare part to minimize downtime during field servicing or fleet maintenance. Replacement or upgrade during engine rebuilds: Use when rebuilding or upgrading compatible outboard motors to maintain consistent fuel delivery.