AUTOOL Master Cylinder Bleeder Adapter Kit 20PCS — Aluminium Gold-Plated Adapters with 11mm Quick Connector & Foam Case

AUTOOL's 20-piece master cylinder bleeder adapter kit is a complete set of aluminum, gold-plated adapters and a quick connector designed to seal a wide range of vehicle brake reservoirs for safe, mess-free fluid exchange.

This master cylinder bleeder adapter collection gives technicians and DIYers the fittings needed to connect manual or automatic brake bleeding tools to many popular makes and models. The set includes multiple sizes with rubber sealing rings, a quick-connect collar for 11mm outlets, and a sturdy foam-padded storage case so each adapter stays protected and organized between jobs.

Which vehicles and brake systems will these adapters fit?

The kit was engineered for broad compatibility across European, Asian, and domestic brands. It includes many common thread and neck sizes to work with models from manufacturers like Mercedes-Benz, BMW, Audi, Volvo, Toyota/Lexus, Ford, Chevrolet, Hyundai, Kia, Mitsubishi, and more.

• 17 master cylinder adapters covering standard reservoir sizes used by multiple makes
• 11mm (0.4 inch) quick connector for brake fluid drains and exchangers
• Works with manual and automatic bleeding rigs including AUTOOL AST609, AST605, AST618, and F118

How durable and leak-resistant are the adapters?

Each adapter is machined from aluminum and finished with a corrosion-resistant gold plating to withstand garage environments. A molded rubber O-ring on every fitting provides a secure seal to minimize spills and prevent air ingress during bleeding.

• Aluminum construction for light weight and mechanical strength
• Gold-plated exterior for oxidation and wear resistance
• Integrated rubber sealing rings for reliable, repeatable sealing

How do I use these adapters with my bleeding tools?

Choose the adapter that matches the reservoir neck on the vehicle, press it into the filler opening so the rubber ring seats, then attach the 11mm quick connector or hose from your bleeder. The kit supports both vacuum and pressure bleeding methods when paired with compatible devices.

• Select the correct adapter from the foam tray and install by hand
• Connect bleed hose or quick connector to the adapter's top
• Operate your preferred bleeder (manual pump, vacuum pump, or automated unit) to evacuate old fluid and draw in fresh fluid

What makes storage and organization easier for professionals?

The adapters come in a custom heavy-duty plastic case with a foam insert cut to hold each piece securely. The case prevents loss, reduces wear from contact, and keeps adapters arranged for faster selection during service work.

• Rigid carry case protects fittings during transport and storage
• Foam compartments keep each adapter accessible and damage-free
• Compact footprint fits into service carts or tool chests

Who is this for: This adapter kit suits professional mechanics, mobile technicians, and enthusiasts who perform regular brake maintenance or fluid exchanges and need a reliable, organized set of fittings. It is particularly useful for shops servicing a mix of domestic and import vehicles, owners of AUTOOL bleeding tools, and anyone seeking a compact, durable solution to speed up brake fluid service without guessing which adapter fits.