Wiseco GLS24 Groove Lock Spacer Oil Rail Support

The Wiseco GLS24 Groove Lock Spacer is a precision-engineered oil ring support component designed for use with Wiseco forged pistons where the wrist pin bore intersects the oil ring groove. This dimpled spacer installs in the oil ring groove prior to the oil ring assembly, preventing the oil rail end gaps from rotating into the open pin bore during engine operation.

Key Features:

• Installs in the oil ring groove before the oil ring assembly with dimple-down orientation to prevent rotation
• Keeps oil ring end gaps properly positioned away from the wrist pin bore opening
• Ensures optimal oil control and consistent ring seal throughout the engine's operating range
• Manufactured to Wiseco's precise tolerances for a reliable, accurate fit with compatible forged piston sets
• Part of Wiseco's complete line of groove lock spacers, available in multiple bore diameter ranges

This groove lock spacer — also referred to as an oil rail support — is a critical assembly component when building engines with Wiseco forged pistons that feature a deep-skirt or low-deck design where the pin bore reaches the oil ring groove area. Proper installation ensures long-term oil control performance and protects both the piston and rings from damage caused by ring rotation or misalignment.