Wagner Tuning Pro Series Main Stud Set, Audi EA839 2.9T/3.0T Engines

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The Wagner Tuning Pro Series 18.8 Cylinder Main Stud Set is designed to replace the original main studs with high-strength Pro-Series 18.8 studs. This upgrade is necessary when making large increases in power and engine performance, such as higher boost levels beyond what the factory hardware is designed for. Using higher tensile strength tool steel than the lower grade steel the factory bolts are made from, Pro Series Main Studs provide higher consistent clamping force than factory bolts that stretch and elongate overuse, causing excess play in the main bearing clearances. This movement and lack of clamping can ultimately cause the bearing surfaces to gall and catastrophically fail.

The Pro-Series 18.8 Stud Bolts have a tensile strength of 1850+ N/mm² (270,000+ PSI) and are designed to be the perfect solution for upgraded main studs. Unlike factory main bolts, the Wagner Pro Series Studs do not need to be replaced after dismantling and can be reused indefinitely.

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