Lisle Disconnect Pliers 37140 — 45° Low-Profile Fuel & EVAP Quick-Connect Release Tool, Slim Jaws

The Lisle 37140 disconnect pliers are a low-profile, 45° angled hand tool built to release fuel, EVAP and DEF quick-connect fittings in confined locations.

Designed for mechanics and DIYers who work around tight fuel-tank openings and cramped engine bays, these pliers let you depress the release tabs on many push-to-connect fittings where straight tools can't reach. The 45° bend and slim jaws make it easier to access connectors between the top of a fuel tank and vehicle sheetmetal, and the tool is compatible with a variety of two-tab Delphi connectors, some import designs, and certain electrical plugs.

How does the 45° low-profile design help in tight spaces?

The angled head lets you approach fittings from the side or beneath where vertical tools are blocked by body panels or fuel tank clearance. Its slim profile reduces the chance of deformation on plastic fittings while giving you the leverage to disengage the locking tabs.

• 45° bend provides side access to recessed connectors
• Slim jaws slide into narrow gaps above fuel tanks
• Reduces force on fragile plastic tabs to prevent breakage

Which connectors will these pliers work on?

They are made primarily for fuel line, EVAP and DEF quick-connect fittings that require tab depression to release—especially Delphi two-tab styles. The tool also functions on some import vehicle fittings and select electrical connectors that use similar locking tabs.

• Compatible with many Delphi two-tab fuel connectors
• Effective on common EVAP and DEF quick-connects
• Can be used on some electrical plug tabs with similar designs

How should I use the pliers to avoid damaging fittings?

Squeeze the handles gently to depress the tabs while pulling the line straight back—avoid twisting or using excessive force. Position the angled jaws so they apply even pressure to both release tabs when present, and inspect the fitting for clips or secondary locks before attempting removal.

• Align jaws with the release tabs before squeezing
• Apply steady, even pressure—no twisting or prying
• Check for retaining clips or safety locks first

Can this tool be used for tasks beyond fuel lines?

Yes — while optimized for fuel, EVAP and DEF quick-connects, the low-profile design is useful on many tight-access clips and some electrical connectors that require tab depression. Keep in mind extreme force or improper angle may still damage delicate plastics.

• Useful on similar push-to-release electrical connectors
• Handy for stubborn small clips in confined engine areas
• Not intended for heavy prying or cutting tasks

Who is this for: The Lisle 37140 is aimed at professional technicians and home mechanics who frequently service fuel systems or work in cramped areas where straight disconnect tools can’t reach. If you need a compact, angled disconnect tool that minimizes stress on plastic fittings and improves access between a fuel tank and vehicle body, this plier is a practical addition to your kit.