BCBC VS-2258 Engine Valve Spring

Engine Valve Spring Overview

Melling VS-2258 is a standard replacement engine valve spring built for stock-style applications across a wide range of Ford and Mazda engines. It uses corrosion-resistant steel and a single-spring design with specified installed and open pressures for consistent valvetrain control.

Compatible with Ford Transit Connect, Ford Escape, Ford Focus, Ford Fusion, Ford Ranger, Ford EcoSport, Lincoln MKZ, Mercury Mariner, Mercury Milan, Mazda 5, Mazda MX-5 Miata, Mazda 3, Mazda 6, Mazda CX-7, Mazda Tribute, and Mazda B2300 applications. The VS-2258 part number is also referenced by 3M4Z-6513-BA, 128-4008, 160-1568, and LF5012125A for the same application.

Key Features

• Corrosion-resistant steel construction for valvetrain service.
• Single-spring design for standard replacement use.
• Installed pressure of 172.0 and open pressure of 390.0.
• Installed height of 1.492, with coil bind height of 1.035.
• Spring open height of 1.129 and outside diameter of 0.968.

Detailed Description

VS-2258 is part of Melling’s Stock line, which covers standard, mid-range, heavy-duty, and race-ready valve spring applications. This spring is intended for stock-style valvetrain service where consistent pressure and controlled motion matter. With a standard replacement grade and corrosion-resistant steel construction, it supports dependable operation in engines that require the listed dimensions and pressure range. The VS-2258 part number is used across multiple Ford and Mazda fitments, including Ford Escape and Mazda 3 applications.

What It Helps Address

• Weak or fatigued valve spring tension.
• Valvetrain instability from incorrect spring pressure.
• Spring bind concerns when the installed geometry must match spec.
• Replacement needs for stock-style engine rebuilds.
• Service issues on Ford and Mazda engines that use this spring specification.

Installation Notes and Tips

Verify installed height, coil bind height, and spring pressure against the engine specification before installation. Confirm the application by year, make, model, and valvetrain requirements, especially on Ford Transit Connect, Ford Focus, and Mazda MX-5 Miata listings. Use the listed dimensions and pressure values to match the correct spring to the cylinder head and camshaft setup.

Quality Assurance

Melling supplies valve springs for standard replacement through race applications, with designs that include single and dual springs, dampers, and beehive configurations. VS-2258 is a standard replacement part built to meet the dimensional and pressure requirements listed for the application.