Edelbrock E-Series Cylinder Head Bolt Kit #85772 is a high-quality replacement bolt set for Chrysler 5.2L and 5.9L Magnum engines equipped with Performer RPM #61779 and #61775 aluminum heads. This kit contains all necessary parts to replace the factory head bolts. E-Series bolts have a yield tensile strength of 190,000 PSI for strong and reliable loading with generous filleting throughout to eliminate stress risers. Bolt threads are rolled after heat-treating for superior form and strength, while a small hex head provides extra space for socket clearance in tight situations. E-Series Cylinder Head Bolts have a durable black oxide finish with sealer and come with the distinctive Edelbrock E stamped into the head.