When needing to maintain the sealing characteristics and engine rigidity of the head gasket by the firm holds of the cylinder head to the block. Maintaining the perfect seal at higher pressures that are found with performance engines usually puts extreme stress loads on these washers which run the risk of deforming and or damaging the stock washers. The stock washers are not always a perfectly flat surface so any signs of warping or uneven surfaces on the washers can cause the bolts/nuts to loose the correct tension when under excessive loads. The TOMEI strengthened washer is made with SCM435 material which helps with guaranteeing the correct surface pressure at all times.
Images are for illustration purpose only. Actual product may vary.
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