ARP Automotive Racing Products
ARP Main Stud Kit, BMW S38
ARP Main Stud Kit, BMW S38
This ARP Main Stud Kit is designed to replace BMW 07119912680 for the S38B35, S38B36, and S38B38 found in the E24, E28, and E34 M5 and M6 chassis.
Upgrading from factory main bolts to ARP Main Studs is a simple, yet greatly beneficial upgrade. ARP Main Studs offer the following benefits:
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.
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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.
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Before installing any hardware, carefully inspect and clean it for defects, shipping damage, and proper fit, length, and dimension.
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Gently screw the main studs into the engine block by hand until they are snug.
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Install the main caps, checking for any binding or misalignment.
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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.
BMW S38B35 Applications:
BMW 5 Series
1985-1987 E28 M5 [European Market]
1987-1988 E28 M5 [American Market]
BMW 6 Series
1984-1989 E24 M635CSi [European Market]
1987-1989 E24 M6 [American Market]
BMW S38B36 Applications:
BMW 5 Series
1988-1992 E34 M5
BMW S38B38 Applications:
BMW 5 Series
1992-1995 E34 M5 [European Market]
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SKU:ARP-MSK-S38
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