For the Mercedes-AMG G63, the shift from the traditional solid-front-axle (pre-2018) to the independent front suspension (W463A/W464) and the recent 2025/2026 facelift (W465) has fundamentally changed the axle parts catalog.

In 2026, the G63 utilizes a sophisticated hybrid setup: an Independent Double-Wishbone Front and a Robust Rigid (Solid) Rear Axle.

1. Front Axle Components (Independent Suspension)

Since 2019, the G63 no longer uses a solid front axle tube. It now uses a carrier-based differential with constant velocity (CV) shafts.

• W465 (2025+) Update: The newest G63 models feature the AMG ACTIVE RIDE CONTROL suspension. While the half-shafts are largely compatible with W463A, the front differential housing has updated mounting points for the active hydraulic anti-roll system.

2. Rear Axle Components (Rigid Axle)

The rear remains a heavy-duty solid axle, providing the G-Class with its legendary durability.

• Diff Lock Actuator: The rear locking mechanism is controlled by part 463-906-45-02. If your G-Class is “stuck” in lock or won’t engage, this electronic actuator is the primary failure point.

3. Drive Shafts (Propeller Shafts)

The G63 uses three distinct drive shafts to manage power from the transmission to the transfer case, and then to the axles.

• Transmission to Transfer Case: 463-410-04-00 

• Transfer Case to Rear Axle: 463-410-18-00

• Transfer Case to Front Axle: 463-410-05-00

4. Technical Differences: W463A vs. W465 (Series II)

1. Kinematics: The W465 (2025-2026) rear axle has revised trailing arm geometry to improve “on-road” high-speed stability.

2. Bearings: Tapered roller bearings in the 2026 models (016-981-60-05) have updated seals specifically designed to resist the high-pressure water ingress seen during the $910\text{mm}$ (35.8″) fording tests.

3. Torque Handling: The G63 Black Series or high-output variants use reinforced CV joints with a higher spline count (check for “M1” or “Performance” stamping on the shaft).

5. Identification Tip

Stamping: Genuine AMG axle shafts will have the A-prefix ) followed by a laser-etched Mercedes star and a data matrix code. In 2026, beware of aftermarket “G63” shafts that do not feature the balance weights—these often cause a vibration at exactly $110\text{ km/h}$ ($68\text{ mph}$).