The Melling Engine Camshaft Melling SPC-4 is a high-quality, durable engine camshaft designed for car and truck engines. With the manufacturer part number SPC-4 and a quantity of 1, this camshaft is a key component for maintaining proper valve timing in your vehicle's engine. The Melling brand is known for producing reliable automotive parts, making this camshaft a dependable choice for your vehicle's valvetrain system.