ARP Pro Series Torque Converter Bolt Kit 2307305 for 4L60/4L80 – 6 x 10mm x 1.50, Black Oxide

Overview

The ARP Pro Series Torque Converter Bolt Kit is designed to support 4L60 and 4L80 transmissions with a focus on precision, durability, and easy installation. This kit uses ARP’s renowned craftsmanship to deliver reliable fasteners that fit the torque converter mounting surface cleanly and sit securely under load, even in demanding driving scenarios.

Key specifications

• Part number: 2307305 (also listed as 230-7305)
• Bolt size and thread: 10 mm x 1.50
• Overall length: 0.590 inches
• Head type: 12-point
• Material and finish: Chromoly with black oxide finish
• Package contents: Set of 6 bolts

What makes this kit stand out

Chromoly provides a strong, fatigue-resistant base, while the black oxide finish adds an extra layer of corrosion resistance in mixed driving conditions. The 12-point head offers a secure grip for common tools, helping technicians achieve a precise seating without slippage. Precision threading and consistent machining support a reliable seal and predictable clamp load.

In real-world applications, these bolts are well suited for rebuilds, performance-oriented builds, and daily drivers that demand dependable fasteners in the torque converter area. The kit’s six-bolt design aligns with common mounting patterns and minimizes the need for aftermarket substitutions, helping you keep your build cohesive and organized.

Fit, usage, and care

Specifically engineered for the 4L60 and 4L80 transmission families, these ARP bolts pair with ARP’s torque converter hardware for a factory-like fit. Use proper torque specifications from your service manual and ensure the threads remain clean and free of damage before installation. Regular inspection during maintenance cycles can help preserve fastener integrity over time.

Why choose ARP

ARP’s Pro Series is built to withstand higher-stress environments while maintaining consistent performance. The combination of chromoly strength and a durable black oxide finish translates to a long-lasting, dependable fastener option for your transmission assembly. This kit represents a ready-to-install solution that aligns with ARP’s quality standards and your rebuilding project.