Lisle A/C and Fuel Line Disconnect Tool Kit 8-Piece — 39900 with Blow-Molded Case, Hand-Operated

Lisle 39900 is an 8-piece master disconnect tool kit designed to quickly release A/C and fuel line fittings while keeping tools organized in a durable blow-molded case.

This compact set gathers the most commonly used quick-disconnect tools for automotive A/C and fuel systems into one portable kit. Each tool is hand-operated and shaped to engage the different collars and retaining tabs used on vehicle lines, letting technicians and DIY mechanics separate fittings without cutting or damaging hoses. The included blow-molded case protects each piece, simplifies transport, and makes it faster to find the correct size on the job.

Which line fittings will this kit work with?

The Lisle 39900 covers a range of popular factory quick-disconnects found on A/C service ports and fuel lines across many domestic and import vehicles. It includes shapes and sizes that match the retention collars on both metal and nylon service fittings. This kit reduces guesswork when you face unfamiliar connectors in a repair bay or garage.

• 8 specifically sized disconnect tools for common A/C and fuel fittings
• Shapes tailored to different collar profiles and clip systems
• Useful for both metal tubing and nylon hard-line connections
• Compatible with many domestic and import vehicle models

How does the blow-molded case help me work faster?

The custom molded case keeps each tool in its own slot so you can instantly identify the right piece without sifting through loose tools. That organization saves time during troubleshooting and reduces the chance of losing small disconnect tools between jobs. The hard-shell case also protects the tools from contamination and damage in a busy shop environment.

• Molded compartments for quick visual selection
• Secure closure for safe transport and storage
• Compact footprint that fits on a service cart or in a toolbox
• Prevents corrosion by limiting exposure to shop grime

Can I use these manually when working alone?

Yes — the Lisle 39900 tools are hand-powered and designed for single-person use without special hydraulic or pneumatic equipment. Their profiles allow you to push, pivot, or pull the retaining collars safely to disengage fittings. For stubborn or corroded connectors, pairing the correct disconnect tool with basic penetrating spray and gentle leverage will usually release the fitting without damage.

• Hand-powered design needs no extra tools or power sources
• Ergonomic shapes enable controlled engagement of collars
• Works well with common shop practices like penetrating oil
• Reduces risk of hose or fitting damage compared with prying tools

Are replacement pieces available if one is lost?

Each disconnect tool in this Lisle kit is also offered individually, so you can replace a single size without buying a whole new set. That makes it economical to maintain the exact sizes you use most often. Check Lisle parts listings or authorized dealers for single-tool availability and part numbers.

• Individual tools sold separately for targeted replacements
• Cost-effective option if a single tool is misplaced or damaged
• Maintains compatibility with the original case layout
• Order via Lisle dealers or parts distributors

Who this is for: The Lisle 39900 Master Disconnect Tool Set is aimed at professional technicians, mobile mechanics, and serious DIYers who regularly service automotive A/C and fuel systems. If you need a compact, organized kit that covers the common quick-disconnect fittings across many vehicle makes and models, this set offers a dependable, hand-powered solution that minimizes connector damage and saves time during repairs.