Edelbrock E-Series Cylinder Head Bolt Kit #85332 for Jeep 4.0L Inline Six EngineEdelbrock E Series Cylinder Head Bolt Kit #85332 is designed for use on Jeep 4. 0L inline six cylinder engines using inch head bolts. This high quality E Series bolt kit will pair perfectly with Edelbrock's Jeep Cylinder Head #50159 and #50169 and will also fit the 4. 2L inline six cylinder engine if using Edelbrock heads. E Series bolts have a yield tensile strength of 190,000 PSI for strong and reliable loading with generous filleting throughout to