Vehicle Fitment: For Ford E150 E250 E350 E450 ECONOLINE F150 F250 F350 LINCOLN; 97-08 Ford Mercury 4.6L 5.4L SOHC V8 VIN "W, L, Z". More information, pls check "Product Description"
OEM Manufacture Number: HB21100 ES72798
Function: Cylinder head bolts hold the cylinder head in place, ensuring it remains stable even when the combustion chamber is under intense pressure. Easy to install
Premium Material: Head bolts made of sturdy material, hardness, all thread are smooth, meet or exceed OEM quality standards