ARP BMW B58 3.0L Main Stud Kit

SKU: 201-5402 | UPC: 672036651138

ARP BMW B58 3.0L Main Stud Kit 2016-2023

The ARP BMW B58 3.0L Main Stud Kit delivers secure main bearing cap retention for B58 engines in BMW 3 Series 340i 4 Series 440i 5 Series 540i X3 M40i X5 xDrive40i Z4 M40i and Toyota GR Supra models from 2016 onward. These studs handle high cylinder pressures from turbo upgrades and increased boost levels while preventing cap walk under extreme loads. Engine builders rely on this kit for reliable bottom-end strength in street and track applications.

Key Features

• ARP2000 Alloy Construction: Forged studs rated at 220,000 psi tensile strength and 174,000 psi yield strength resist fatigue in high-horsepower builds.
• Precision Rolled Threads: Ensure even clamping load distribution and accurate torque values for consistent performance.
• Heat Treatment Process: Provides maximum durability against stretching and failure during repeated thermal cycles.
• Complete Kit Contents: Includes 10 main studs M12 x 1.5 thread 4.375-inch underhead length heavy-duty washers and 12-point nuts.
• Corrosion-Resistant Finish: Black oxide coating protects against rust in harsh engine environments.

Product Notes

• Use ARP Ultra-Torque fastener lubricant during installation for precise torque readings.
• Inspect main caps and block for straightness before assembly.
• Packaged in protective ARP box for safe transit.

Installation Notes

• Professional installation recommended.
• Torque studs in sequence to ARP specs: 75 ft-lbs initial then +90 degrees with moly lube.
• Compatible with stock BMW main caps. no machining required.

This Part Fits

Year	Make	Model	Submodel
2016-2019	BMW	3 Series	340i Sedan
2016-2019	BMW	3 Series	340i xDrive Sedan
2017-2021	BMW	2 Series	M240i xDrive Coupe
2017-2021	BMW	2 Series	M240i Coupe
2016-2020	BMW	4 Series	440i Coupe
2016-2020	BMW	4 Series	440i xDrive Coupe
2017-2023	BMW	5 Series	540i xDrive Sedan
2018-2021	BMW	X3	M40i
2019-2021	BMW	X4	M40i
2019+	BMW	X5	xDrive40i
2020+	BMW	Z4	M40i
2020+	Toyota	GR Supra	3.0

Why Choose ARP?

• Trusted by NHRA IHRA and Formula 1 race teams for critical fasteners.
• Manufactured in USA with rigorous quality control standards.
• Backed by limited lifetime warranty against manufacturing defects.

Frequently Asked Questions

• Q: Will this kit fit Toyota A90 GR Supra B58 engines?
  A: Yes it directly replaces OEM mains in all B58-powered Supras from 2020 including Launch Edition and Premium trims.
• Q: What alloy is used in these studs?
  A: ARP2000 a proprietary nickel-chromium-molybdenum steel alloy with superior strength over 8740 chromoly used in OEM bolts.
• Q: What torque specs apply during install?
  A: Follow ARP instructions: lube threads and underheads then torque to 75 ft-lbs followed by 90-degree turn using a calibrated wrench.

Shipping & Handling

• Method: UPS Ground or USPS Priority
• Availability: In stock – ships same or next business day
• Packaging: ARP branded box 12 x 8 x 2 inches
• Weight: 2 lbs