FMBP 466544 Engine Valve Spring

Performance valve spring for V8 applications

Melling 466544 is a performance engine valve spring built for street, circle track, OEM-style performance, and drag race use. It is a single spring design made from corrosion-resistant steel and specified with a 1.800-inch installed height, 130.0 lb installed pressure, and 348.0 lb open pressure.

This spring is sized with a 0.645-inch inside diameter, 1.019-inch outside diameter, and 1.141-inch coil bind height. The 466544 is listed for Chrysler 300, Dodge Charger, Dodge Ram 1500, and Jeep Grand Cherokee applications with 0.645 I.D. small-end performance notes, making it a fitment-based choice for Chrysler, Dodge, and Jeep performance builds.

Key features

• Single spring construction for performance valvetrain setups
• Corrosion-resistant steel material
• 1.800-inch installed height and 130.0 lb installed pressure
• 348.0 lb open pressure for higher-load operation
• 0.645-inch inside diameter with 1.019-inch outside diameter
• Performance grade design from the Melling Performance line

Detailed application information

Melling 466544 is part of the Performance line and is engineered for buyers who need a valve spring with defined pressure and dimensional targets. The spring type, material, and pressure ratings make it suitable for performance valvetrain setups where consistent spring control matters. This part number, 466544, is used across multiple Chrysler, Dodge, and Jeep applications, including Dodge Ram 2500 and Dodge Durango listings in the same performance family.

What this part helps address

• Valve control concerns in higher-rpm performance builds
• Spring pressure requirements for modified valvetrain setups
• Fitment needs for performance applications with a 0.645 I.D. small end
• Replacement of worn or fatigued engine valve springs
• Application matching for Chrysler, Dodge, and Jeep performance engines

Installation notes and tips

Verify installed height, coil bind clearance, and spring pressure before installation. Confirm that the cylinder head and valvetrain geometry match the 1.800-inch installed height and 1.141-inch coil bind height. Review the application notes for the specific vehicle and engine combination before ordering. This part number, 466544, is listed with performance-oriented fitment notes rather than universal coverage.

Quality assurance

Melling offers a range of valve springs from standard-duty to race-ready designs, including single and dual spring configurations. The 466544 reflects that performance-focused product range and is built to meet defined spring pressure and dimensional requirements for engine valvetrain service.