BMW B48 ARP Main Stud Kit

This ARP Main Stud Kit is designed for the BMW B48 Engine  Upgrading from factory main bolts to ARP Main Studs is a simple, yet greatly beneficial upgrade. ARP Main Studs offer the following benefits:  - Uniform Clamping Force: ARP Main Studs provide a uniform clamping force that OEM bolts cannot. With the improved distribution of pressure across main bearing caps comes better, more precise crank alignment for stability and longevity.  - Improved Block Stability and Rigidity: ARP Main Studs improve block rigidity and therefore stability. This ensures maximum power transfer from the crank to the drivetrain, which in turn ensures:  - Improved Throttle Response - Greater Horsepower - Higher Torque Output - Prevent Main Cap Walk: This occurs as main caps shift and move out of position, which can cause crank and engine damage - Reduced Risk of Fastener Stretching: Under high RPM applications and high loads, factory main bolts are prone to stretching and deforming. ARP uses advanced manufacturing techniques and high quality materials for hardware that is much less prone to deformation under load. - Safeguard Engine Block Threads: Because ARP Main Studs have unmatched tensile strength, they are much less likely to deform or strip block threads under high loads. Additionally, ARP’s precision machining and manufacturing ensures that stud threads are both highly accurate and consistent. When opting for main studs instead of factory bolts, it's important to note that the engine builder should mic the bores. Using studs may require a line hone to ensure proper fitment and alignment. A line hone is a machining process that can be used to resize and reshape the main bearing bores, ensuring that they are perfectly round and concentric. This is crucial for ensuring proper oil clearance and preventing premature bearing wear. By mic'ing the bores and performing a line hone if necessary, engine builders can ensure that the main studs are installed correctly and that the engine will perform reliably and at its best. Installation Instructions:  To ensure accurate torque readings and proper thread engagement, thoroughly clean all threads in the engine block. If necessary, use an ARP chaser to chase the threads. Before installing any hardware, carefully inspect and clean it for defects, shipping damage, and proper fit, length, and dimension. Gently screw the main studs into the engine block by hand until they are snug. Install the main caps, checking for any binding or misalignment. Apply ARP Ultra-torque fastener assembly lubricant to the threads of the studs, nuts, and washers. Install the washers and nuts onto the studs and tighten them by hand. It is highly recommended to use the ARP Ultra-torque fastener assembly lubricant provided with the kit, as it provides consistent clamping force and reduces friction on the studs. Do not use motor oil or other low-quality lubricants. PRELOAD (TORQUE) RECOMMENDATIONS 7. Following the manufacturers recommended torque sequence tighten the nuts steps 1-3 Step 1: Tighten to 20 ft-lbs. Step 2: Tighten to 40 ft-lbs. Step 3: Tighten to 60 ft-lbs. with ARP Ultra-Torque fastener assembly lubricant BMW B48 Applications: 1 Series 2016-2019    F20    120i / 125i 2019-2023     F40     118i / 120i / 128ti / 135i / M135i 2024-Present     F70     120 / M135i  2 Series 2014-2021     F22/F23     218i / 220i / 230i 2014-2017     F45     220 / 225i 2021-Present     G42     218i / 220i / 230i 2021-Present     U06     223i 2020-2024     F44     218i / 220i / 228i / M235i 2025-Present     F74     M235 3 Series 2015-2019     F30/F31/F34     320i / 330i / 330e 2018-Present     G20/G21     318i / 320i / 330i / 330e 4 Series 2016-2019    F32/F33/F36    420i / 430i 2020-Present     G22/G23/G26     420i / 430i / 430e 5 Series 2017-Present     G30/G31     520i / 530i / 530e 6 Series 2017-Present     G32     630i 7 Series 2015-2022     G11/G12     730i / 730Li / 740e / 740Le X1 Series 2015-2022     F48     sDrive18i / sDrive20i / xDrive20i / 25i / xDrive25i / 28i 2022-Present     U11     sDrive18i / xDrive20i / xDrive28i / M35i X2 Series 2018-2023     F39     sDrive18i / sDrive20i / xDrive20i / 25i / xDrive25i / 28i / M35i 2023-Present     U10     xDrive28i / M35i X3 Series 2017-2024     G01     sDrive20i / xDrive20i / xDrive30i / xDrive30e 2025-Present     G45     xDrive20e / xDrive30e X4 Series 2018-Present     G02     xDrive20i / xDrive30i X5 Series 2018-Present     G05     xDrive25i / sDrive25i Z Series 2018-Present     G29     Z4 sDrive20i / sDrive30i Toyota B48 Applications: A90 / A91 Supra 2019-Present     J29/DB82/DB22 Supra 2020-Present     GR Supra 2.0   MINI B48 Applications: MINI Hatch [F55/F56/F57] 2014-Present     Cooper S 2015-Present     John Cooper Works (JCW) MINI Clubman [F54] 2015-Present     Cooper S 2016-Present     John Cooper Works (JCW) MINI Convertible [F57] 2016-Present     Cooper S 2016-Present     John Cooper Works (JCW)