Reinforced Cylinder head studs ARP VW Corrado Golf 3 VR6 12V AAA ABV

This kit of reinforced head studs for VR6 AAA and ABV engines is made up of 20 ARP studs, 20 ARP washers and 20 ARP nuts.

You will find the fitting instructions in the "Download" tab above.

Below (click on the image) you will find the reinforced head gaskets for the VR6 12V engine:

Coming from the aerospace industry, Gary Holzapfel founded the ARP (Automotive Racing Products) brand in the early 1970s to address a major issue in motorsport: engine failure caused by bolts and studs that were not strong enough. At the time, no manufacturer was able to meet these needs. Today ARP offers thousands of references across different ranges and product types such as head bolts, main bearing bolts, rod bolts... Depending on the application, ARP offers different ranges (materials) of fasteners:

• 8740: a chrome-molybdenum steel with standard resistance properties, well suited to tuned engines. This steel offers a tensile strength between 1240 and 1447 N/mm2.
• ARP2000: stronger than 8740, the ARP2000 alloy can withstand clamping/tensile loads of up to 1516 N/mm2. This range is frequently used on track and drag cars and can be used with hydrogen.
• L19: a higher-grade treated steel offering tensile and fatigue resistance properties clearly superior to the 8740 and ARP2000 ranges. Its tensile strength can reach up to 1792 N/mm2. This material is more sensitive to corrosion and must therefore stay oiled and not be exposed to moisture. Using hydrogen with this range is not recommended.
• CA625+ (Custom Age 625 Plus): this "super-alloy" offers clearly superior technical properties while remaining resistant to corrosion and oxidation. Its tensile strength can reach 1930 N/mm2.

All ARP fasteners are designed and manufactured in the United States. Manufacturing starts with cold or hot forging, then a heat treatment (different depending on the range) is applied, followed by shot peening to remove irregularities. Precision grinding is then carried out to achieve perfect concentricity, before the thread is cut. Finally, a finish is applied such as black chrome-molybdenum oxide coating or stainless steel polishing, depending on the product range.

Each kit is supplied with assembly grease and an instruction sheet indicating:

• Installation steps
• Thread size of bolts / studs / nuts
• Tightening torque
• Tightening procedure