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A quick-connect line is only quick when the correct release tool is in the gap. On air conditioning and fuel-line service, prying, twisting, or pulling harder can turn a service step into a damaged fitting, bent retainer, or leaking connection.

Lisle 37000 Air Conditioning / Fuel Line Disconnect Tool Set is a small six-piece set for buyers who need the right size release tool before separating selected A/C and fuel-line couplings. It is not a universal vehicle fitment promise, so the useful question is whether your fitting style and size match what Lisle documents.

What Parts Universe lists

Parts Universe currently lists this item as Lisle 37000 Air Conditioning/Fuel Line Disconnect Tool Set. The active Shopify product record verified for this article shows:

• Parts Universe SKU: LSL-37000
• Manufacturer part number: 37000
• UPC: 083045370000
• Current Parts Universe price: $7.71
• Current inventory: 1 unit
• Current status: active and available for sale

What Lisle verifies

Lisle's official product page identifies the tool as 37000 Air Conditioning / Fuel Line Disconnect Tool Set, with SKU 37000, UPC 083045370000, and shipping weight 0.25 lb.

Lisle describes the set as a way to disconnect spring-lock couplings on Ford and Chrysler air conditioning lines. The same official page also says it works on fuel-line quick-connect couplings found on GM, Ford, and Chrysler vehicles, and that the 5/16 inch size fits push-lock connectors found on Ford radiators and transmission lines.

The six included sizes

Lisle documents six disconnect-tool sizes in the 37000 set:

• 5/16 inch
• 3/8 inch
• 1/2 inch
• 5/8 inch
• 3/4 inch
• 7/8 inch

The set is useful when you do not know the line size until the vehicle is in front of you, or when a shop wants common A/C and fuel-line release sizes in one holder.

When this set makes sense

Choose a set like Lisle 37000 when the repair involves a documented spring-lock or quick-connect fitting and you can match the line to one of the listed sizes. It is especially practical for older service work where an A/C line, fuel-line coupling, radiator push-lock connector, or transmission-line connector needs the release fingers compressed evenly.

It is not the right answer for every plastic fuel connector, every late-model specialty retainer, or a fitting that is rusted, cracked, or already deformed. In those cases, identify the connector style first and follow the vehicle service information.

Checks before buying

1. Identify the fitting style. Confirm that the job uses a spring-lock or quick-connect design that calls for a collar-style disconnect tool.
2. Measure or confirm the line size. Lisle lists 5/16, 3/8, 1/2, 5/8, 3/4, and 7/8 inch tools in this set.
3. Check access. Lisle notes confined-space use, but the tool still needs enough room to sit squarely against the connector.
4. Plan for fluid or refrigerant safety. Do not open a pressurized A/C or fuel system without the proper recovery, depressurizing, and service procedure.
5. Inspect the retainer. If the connector is packed with dirt, corroded, or damaged, clean and diagnose before forcing the tool into place.

Safety notes

• A/C systems can be under high pressure and may require certified recovery equipment before lines are opened.
• Fuel systems can retain pressure after the engine is off; relieve pressure according to the service manual.
• Work away from ignition sources, hot exhaust parts, and energized electrical equipment when fuel lines are involved.
• Wear eye protection and gloves appropriate to the fluid or refrigerant being serviced.
• Replace damaged O-rings, retainers, or connectors according to the service procedure; the disconnect tool only releases the fitting.

Good fit, bad fit

Good fit: a matching-size A/C spring-lock or fuel-line quick-connect fitting where a collar-style release tool can slide in squarely and compress the internal retainer.

Bad fit: an unidentified connector, a pressurized system without the required service steps, a damaged fitting, or a vehicle procedure that calls for a different disconnect tool.

Related Parts Universe links

• Shop Lisle 37000 Air Conditioning/Fuel Line Disconnect Tool Set
• Browse tools and equipment
• Browse vehicle specialty tools

Lisle 37000 is best treated as a fitting-release kit, not a shortcut around identification. Match the connector, size, and service procedure first; then use the correct included tool to release the coupling cleanly.

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