Dart Valve Spring Shim

The Dart Valve Spring Shim lets you fine-tune installed valve spring height in performance engine builds. Each valve spring is rated for a specific load at a given installed height. Shims let you set every spring on the engine to the same installed height, so spring load and tension are consistent across all cylinders.

Key Features:

• Lets you adjust installed spring height precisely until every spring matches
• Helps you reach the correct installed height and spring tension
• Made by Dart, a U.S. engine component manufacturer, using computer-assisted design and qualified machining
• Built for strength and durability in demanding engine applications
• Available in several thicknesses so you can make small, accurate height adjustments

These shims suit engine builders who want even valve spring loads for dependable valvetrain performance. Choose the variant that gives the adjustment you need.