Item Type: Freeze Plug KitMaterial: BrassOEM:for Pioneer 830001for Sealed Power 381-8007for Milodon 34031for Dorman 567-001for Melling MPE-100BRFitment:Replacement for Chevy Small Block 283ci 305ci 327ci 350ci 1957-97Fitment: Freeze frost expansion plug kit is replacement for Chevy Small Block 283ci 305ci 327ci 350ci 1957?97.Replace OEM: The OEM number is for Pioneer 830001, for Sealed Power 381?8007, for Milodon 34031, for Dorman 567?001, for Melling MPE?100BR.High Quality Material: Freeze plug kit is made of high quality brass material, rustproof, high strength, sturdy and durable.Original Standard: According to the original standard, professional manufacturing, exquisite workmanship, stable and reliable.Easy Installation: Easy to install without any complicated tools, convenient for using, save your time and energy.Please double check the part number of your item, matching information is for reference only. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks12 xFreezePlug5 x Screw