Mercury S-55 Starter Parts

The Starter Solenoid is the relay of the starting circuit that carries the high amperage required when the starter motor is engaged. The solenoid is typically energized by the starter switch when commanded by the vehicle operator. Starter solenoids may also be used in other high amperage circuits, compare solenoid specification to your circuit needs before installing.

The starter motor is responsible for rotating the engine during the starting process. The electric starter motor has several serviceable parts making repair economical when single part replacement will suffice.

The starting system consists of the rotating electrical motor and solenoid which may be mounted on the starter motor or mounted remotely. The electric motor drives a gear which engages with the engine’s flywheel located at the rear of the motor, when the motor is energized, the motor will turn the engines crankshaft. The starter solenoid is an electric relay, or switch used to provide power to the starter motor or any electrical device that requires high amperage to operate. A low amperage wire winding within the solenoid will create magnetic force when voltage is applies from a remote switch, such as the ignition switch or another type of remote mounted switch. The contacts within the relay carry a high amperage load to run an electric motor or some other type of high load circuit.

Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by a Limited Warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

This 100% New Starter is engineered to meet or exceed OEM specifications, ensuring a perfect fit and hassle-free installation. Designed with premium-grade solenoids, it features materials chosen for optimal conductivity, a high-temperature cap for flawless performance in extreme heat, and a high dielectric strength outer case to resist shorting. The precision-machined armature with an upgraded steel shaft enhances durability and performance, making it a reliable choice for your vehicle. With a 9-tooth configuration and 12-volt compatibility, this starter is built to deliver consistent and powerful performance. Each unit comes with a printed copy of test results, giving you confidence in its quality and reliability from the very first use.