Sir Tools M0027 Pin Wrench Socket for Mercedes Rear Axle Shaft Flange Grooved Nut

The Sir Tools M0027 Pin Wrench Socket is a specialty 1/2-inch drive socket engineered specifically for the removal and installation of the grooved nut on the rear axle shaft flange of select Mercedes-Benz chassis. This tool is essential when performing axle bearing or rear axle seal replacements on vehicles equipped with constant velocity (CV) joint axles.

Key Features:

• 1/2-Inch Drive — Compatible with standard 1/2" ratchets, breaker bars, and torque wrenches
• Precision Pin Design — Engineered to positively engage the grooved nut, preventing slippage and component damage during high-torque removal and installation
• Specialty Mercedes-Benz Tool — Purpose-built for rear axle service on W-series chassis with CV joint axles
• Professional Grade Construction — Built to withstand the demands of professional automotive workshop use

Applicable Mercedes-Benz Chassis:

• W107 (SL/SLC Class)
• W114 (250/280 Series)
• W115 (200/220/230/240 Series)
• W116 (S-Class)
• W123 (200/230/240/280/300 Series)
• W126 (S/SE/SEC Class)

This socket is a required tool for any technician performing rear axle bearing or seal service on the above Mercedes-Benz platforms with constant velocity joint axles. Using the correct tool prevents damage to the grooved nut and surrounding components during the R&R process.