Hold-down tabs are what let a cast aluminum cover clamp evenly without the bolts dimpling the rail. Torque a cover down without them and the sealing pressure concentrates at each fastener, which is where the weeping starts. These are 5 in. steel tabs in black, sold as a set of four, and they are a required item with several of the valve cover families rather than an optional dress-up part.

Edelbrock 44263 Hold-Down Tab Kit Details:

• Set of four hold-down tabs, 5 in. long.
• Steel construction with a black finish.
• Fits small-block Chevrolet valve covers, covering 1955-1986 Chevrolet and GMC.
• Distributes clamping load along the cover rail to protect the gasket seal.
• Check your cover part number against the required and related part lists before ordering.