BILITOOLS Transmission Fill Tool Kit 7PCS Aluminum & Zinc Alloy - Mercedes 9G‑Tronic & 8‑Speed Fit

The BILITOOLS 7PCS Transmission Fill Tool is a complete aluminum and zinc alloy service kit designed to drain and refill ATF fluids on Mercedes 9G‑Tronic, 8‑speed and compatible transmissions.

This compact kit gathers seven purpose-built adapters and tools so you can perform a proper transmission fluid change without chasing individual parts. Built from corrosion‑resistant zinc alloy and lightweight aluminum, the set provides specific fill fittings for M12x1.5, dedicated 9‑speed, hybrid 9‑speed, and an 8‑speed bit with wrench, covering many European and Japanese vehicles. The components are engineered to fit OEM fill ports and reduce the risk of thread damage while withstanding the torque needed for service work.

Which vehicles and transmissions will this kit work with?

The kit targets Mercedes‑Benz models fitted with the 9G‑Tronic (type 725.xx) and many 8‑speed transmissions from other manufacturers. It lists OEM equivalent part numbers and notes compatibility with specific models for quick verification. You can also use select adapters for Nissan/Infiniti 9‑speed applications and various 8‑speed systems from other makes.

• Mercedes New C‑Class, E‑Class, S‑Class, GLC, GLE, GLS with 9G‑Tronic
• Nissan Z (RZ34), Frontier (D41), Titan, Infiniti QX80 with 9G‑Tronic
• 8‑speed transmissions from BMW, Audi, VW, Dodge, Land Rover, Toyota and others
• OEM equivalents: 725 289 22 90 00, 725 589 00 09 00, 725 589 02 90 00

How do the materials and construction protect transmission components?

The set pairs zinc alloy adapters for high‑wear surfaces with aluminum pieces that are gentler on threaded housings. That combination maintains a secure fit while reducing the chance of cross‑threading or gouging soft transmission castings. Corrosion resistance and robust machining mean these tools stand up to repeated workshop use.

• Zinc alloy adapters for durability and tight wear‑resistant fit
• Aluminum components to lower risk of thread and housing damage
• Corrosion‑resistant finishes for longevity in garage environments
• Precision machining to align with OEM fill ports

What adapters and bits are included, and how do I pick the right one?

The kit contains seven pieces: multiple fill adapters including M12x1.5, a dedicated 9‑speed adapter, a hybrid 9‑speed adapter, plus an 8‑speed bit and matching wrench. Choose the adapter that matches your transmission’s fill port thread and profile; the 9‑speed and hybrid adapters are tailored to Mercedes‑style ports while the M12x1.5 provides a common general‑use option.

• M12x1.5 adapter for general ATF fill needs
• Dedicated 9‑speed adapter for 9G‑Tronic transmissions
• Hybrid 9‑speed adapter for 9‑speed hybrid variants
• 8‑speed bit plus wrench for broader brand coverage

Can this kit be used by DIYers or is it for pros only?

The toolset suits both experienced DIY mechanics and professional shops because it combines vehicle‑specific adapters with durable materials and a practical layout. If you are comfortable with vehicle fluid service procedures and safety precautions, the kit simplifies the refill step by matching OEM fill interfaces. Professionals will appreciate the rugged construction and repeatable fit.

• DIY friendly when paired with correct service instructions
• Professional quality construction for repeated shop use
• Reduces need for custom or improvised fittings
• Compact kit keeps all adapters organized for quick access

Who is this for: The BILITOOLS 7PCS Transmission Fill Tool kit is for owners and technicians who service Mercedes 9G‑Tronic transmissions, owners of Nissan/Infiniti 9‑speed models, and anyone working on 8‑speed gearboxes who wants accurate, OEM‑style fill fittings. It’s ideal for home mechanics who want precise adapters to avoid thread damage, as well as professional shops that need durable, corrosion‑resistant tools for routine transmission fluid maintenance. Always follow vehicle manufacturer procedures and safety guidelines when performing fluid service.