This custom-made ARP Head Stud Kits suiting the 5-cylinder engines are simply the best stud setup available in the market today. They are manufactured using premium quality heat-treated 8740 chrome moly steel. This ARP Head Stud Kit is meant to replace the original Ford head bolt
ARP uses a premium quality (SDF and CHQ grade) 8740 chrome moly steel alloy that is rated superior to aircraft quality. Each stud is placed vertically in special racks and heat-treated to ensure 360° penetration. This procedure is far superior to other methods of dumping items in a large bin and batch treating.
Following heat-treatment, each stud is shot-peened to remove surface irregularities, and then undergoes a centreless grinding process to ensure they are perfectly concentric. This procedure involves about ten machining steps for an exceptionally straight part.
The studs are then thread rolled after heat-treatment, which gives them about 1000% (10 times) more fatigue strength than those studs that are threaded prior to heat-treatment.
ARP Nuts are manufactured in a multi-step process that "blanks” the hex and 12-point nuts and is followed by a CNC-threading process which taps each nut with an accuracy of .001K (5 times higher than the aerospace standard). This ensures an exceptionally close-tolerance fit between the bolt/stud and nut.
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To enquire about having any of our products listed on this website fitted or intalled to your vehicle. Please call our workshop in St Albans, Hertfordshire, UK on: 01727867747. In addition to part fitting we also carry out Servicing, MOTS, Diagnostics & Repairs.
01727867747
8.00am - 6.00pm Monday-Friday
Closed Saturday/Sunday