Top engine builders often suggest the replacement of the intake manifold bolts each time you remove the intake manifold. This is absolutely the case of the OE torque-to-yield (TTY) fasteners found stock on many older engines and high-quality intake manifold bolts from Pit Stop USA can be used multiple times. Intake Manifold Fastener Kits are available in for a wide range of applications. Pit Stop USA offers a great selection of Intake Manifold Bolt Kits including Grade 8, 12-point flange clear zinc bolts are 3/8" x 1-1/8" long to fit small block Chevys and Chrysler A and B engines where clearance is insufficient for standard hex head bolts.