58490-378

GM Large Bore Valve Core Remover Tool

Specialised valve core remover tool designed specifically for GM large bore A/C systems. Part of the comprehensive 58490 Universal R12/R134a Valve Core Master Kit. Essential tool for automotive A/C technicians servicing GM vehicles with large bore service ports.

Key Features

• GM Specific: Designed for GM large bore A/C systems
• Professional Quality: Precision-engineered for reliable performance
• Part of Master Kit: Component of 58490 universal kit
• Dual Function: Removes and installs large bore valve cores
• Safe Operation: Prevents damage to valve threads
• Durable Construction: Built to last in demanding environments
• Essential Tool: Must-have for GM A/C service

Technical Specifications

• Model: 58490-378
• Type: GM large bore valve core remover/installer
• Application: GM large bore A/C service ports
• Compatible Systems: GM automotive A/C systems
• Part of Kit: 58490 Universal R12/R134a Valve Core Master Kit
• Barcode: 700376101164
• SKU: 58490-378
• HS Code: 82055900

Applications

• GM automotive A/C service
• Large bore valve core removal and installation
• GM vehicle maintenance
• Mobile service operations
• Workshop environments

Why Use the GM Large Bore Tool?

• Proper Fit: Designed specifically for GM large bore ports
• Prevents Damage: Avoids damaging valve threads
• Proper Seating: Ensures cores are correctly installed
• Professional Standard: Essential for quality GM A/C work
• Efficiency: Faster than improvised methods
• Safety: Controlled removal prevents refrigerant loss

Related Valve Core Products

Valve Core Master Kits:

• 58490 — Universal R12/R134a Valve Core Master Kit (includes this tool)
• 58490-YF — Universal R1234yf Valve Core Master Kit
• 91337 — R12/R134a/R1234yf Valve Core Repair Kit

Specialised Valve Core Tools:

• 58490-378 — GM Large Bore Valve Core Remover Tool - This Product
• 58490-768 — Eaton R134a Low Side Valve Core Tool

Standard Valve Core Tools:

• 91490 — Standard Valve Core Remover Installer Tool
• 91496 — Valve Core Remover Tool HVAC Service
• 91498 — Universal Valve Core Remover Installer R410A

Replacement Parts:

• 91490-K — Replacement Tip & Pin for 91490/6/8

Valve Cores:

• 90377-20 — Standard Valve Core (20pcs)

Installation Kits:

• 90376 — Valve Core Removal Installation Kit 6 Cores

Perfect For

• Automotive A/C specialists
• GM vehicle technicians
• Mobile service operators
• Workshop environments
• Professional service operations
• Technicians servicing GM vehicles

Maintenance

• Keep Clean: Wipe tool clean after use
• Inspect Regularly: Check for wear or damage
• Proper Storage: Store in toolbox or service kit

Professional Quality: Mastercool 58490-378 GM large bore valve core remover tool provides precision-engineered, reliable performance for safe removal and installation of large bore valve cores on GM automotive A/C systems. Part of the comprehensive 58490 Universal R12/R134a Valve Core Master Kit.