ARP Main Stud Kit

2020–2026 Toyota GR Supra BMW B58 3.0L

Part #: 201-5402

Overview

The ARP BMW B58 3.0L Main Stud Kit is engineered specifically for the 2020–2026 Toyota GR Supra equipped with the BMW B58 3.0L engine. Designed to replace the factory main bolts, this stud kit provides enhanced clamping force and durability to secure the engine’s main caps under high-performance conditions. Ideal for enthusiasts and professional builders seeking to improve engine reliability and strength, this kit ensures the bottom end of the B58 engine maintains integrity during aggressive driving, tuning, or track use.

Whether you are upgrading your Supra for motorsport applications or simply want peace of mind during spirited driving, the ARP main stud kit offers a direct-fit solution that meets the demands of high horsepower and torque outputs.

Key Features

Built with precision and engineered for performance, the ARP main stud kit delivers several key benefits:

• High-strength alloy steel studs designed to withstand extreme loads and stress
• Improved clamping force compared to factory main bolts for enhanced engine block stability
• Precision-machined threads for consistent torque and reliable installation
• Direct bolt-on fitment for 2020–2026 Toyota GR Supra with BMW B58 3.0L engine—no modifications required
• Corrosion-resistant coating to ensure long-lasting durability
• Reduces risk of main cap movement and bearing failure under high RPM and boost conditions
• Compatible with both stock and modified engine builds

Construction & Design

ARP manufactures this main stud kit from premium-grade alloy steel, carefully heat-treated to achieve optimal tensile strength and fatigue resistance. Each stud is precision-machined to exacting tolerances, ensuring a perfect fit and consistent clamping force across all main caps. The studs feature a proprietary coating that protects against corrosion and galling, extending service life even in harsh operating environments.

The design focuses on replacing the factory main bolts with studs that allow for more uniform load distribution and easier maintenance. This approach reduces the chance of thread damage in the engine block and improves overall bottom-end durability.

Installation & Fitment

This ARP main stud kit is a direct replacement for the factory main bolts on the BMW B58 3.0L engine found in the 2020–2026 Toyota GR Supra. Installation requires standard engine disassembly to access the main caps, making it suitable for engine rebuilds or upgrades. The studs are installed with ARP’s recommended torque specifications and assembly procedures to ensure proper clamping force and engine reliability.

No modifications to the engine block or main caps are necessary, making this kit an ideal upgrade for both professional engine builders and experienced enthusiasts.

What's Included

• Set of ARP main studs engineered for BMW B58 3.0L engine
• Matching ARP nuts for secure fastening
• Installation instructions with torque specifications

Ideal For

This main stud kit is perfect for Toyota GR Supra owners who are:

• Building or rebuilding their B58 3.0L engine for increased power and reliability
• Upgrading to support forced induction or high-boost applications
• Seeking to improve engine bottom-end strength for track, street performance, or motorsport use
• Looking for a durable, high-quality replacement for factory main bolts

ARP (Automotive Racing Products) is the gold standard for high-strength fasteners used in performance engines and drivetrains. Trusted across motorsports, ARP’s studs, bolts, and hardware kits are engineered for extreme clamping loads and repeatable installation—helping builders improve reliability when cylinder pressures, RPM, and heat are turned up.