ARP Reinforced Head Studs VAG 1.8/2.0 8V ABA DX GX HT JH PF PG RD RV

This kit of reinforced head studs for VAG 1.8/2.0 8V engines comprises 10 ARP studs, 10 ARP washers and 10 ARP nuts.

Fitting instructions are available in the "Download" tab above.

Below (click the image) you will find the reinforced head gasket for the VAG 1.8/2.0 8V 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 could meet this need. Today ARP offers thousands of part numbers across different ranges and product types, such as head bolts, main bearing bolts and con rod bolts. Depending on the application, ARP offers different fastener material grades:

• 8740: a chrome-molybdenum steel with standard strength properties, entirely suited to tuned engines. This steel offers a tensile strength of 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 widely used on circuit and drag cars and can be used with hydrogen.
• L19: a premium heat-treated steel offering tensile and fatigue strength properties well above 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 be kept away from moisture. Hydrogen use is not recommended with this range.
• CA625+ (Custom Age 625 Plus): this "super alloy" offers significantly superior technical properties while remaining resistant to corrosion and oxidation. Its tensile strength can reach 1930 N/mm².

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

Each kit is supplied with assembly lubricant and instructions stating:

• The installation steps
• The thread size of the bolts/studs/nuts
• The tightening torque
• The tightening procedure