GN-126 – Rubber Flex Disc – Mercedes Application – Bolt Circle Dia 90MM – Disc Width 26MM

The GN-126 is a direct-fit rubber flex disc for MERCEDES driveshafts. Constructed from a fiber-reinforced elastomer compound, it delivers consistent torque transmission, vibration isolation, and the dimensional accuracy required for proper balance -- three properties that determine whether a drivetrain feels refined or rough.

Technical Specifications

Understanding Propshaft Couplings

The rubber flex disc -- sometimes called a guibo, flex coupling, or propshaft donut -- is a fundamental component in rear-wheel-drive and all-wheel-drive drivelines. It replaces the rigid slip joint at the gearbox end of the shaft with an elastomeric connection that absorbs shock, isolates vibration, and accommodates the slight angle between transmission output and driveshaft centerline. The GN-126 is sized for MERCEDES fitment.

Ordering and Fitment Verification

When ordering, confirm the application notes on the product page match your vehicle's build date and variant. Some platforms -- including those served by the GN-126 -- changed flex disc specifications mid-production. Cross-referencing the OEM part number alongside the bolt circle, disc width, and pilot diameter provides the most reliable fitment confirmation.

Why Source From Universal Driveshafts

• Direct OEM-match dimensional verification on every flex disc
• Elastomer compound certified for temperature and load ratings
• Ships same or next business day from our driveline parts inventory
• Technical support available for fitment questions before purchase

The GN-126 rubber flex disc is available for immediate shipment. Contact our driveline specialists if you need clarification on application compatibility or want to confirm the part number against your vehicle's OEM service data.