BYD Formula Leopard 5 Half Shaft Assembly (Drive Shaft / CV Axle)

This product is professionally designed for BYD’s popular Ocean Series model—the BYD Formula Leopard 5, serving as a core drivetrain component for power transmission in the DM-i super hybrid front-wheel-drive system.

As a professional manufacturing factory specializing in automotive powertrain and drivetrain parts, our half shaft assembly strictly follows OE specifications, dedicated to providing the global aftermarket with high-strength, high-precision replacement solutions.

The half shaft assembly (also known as drive shaft, axle shaft, or CV axle) is the core component that transmits power from the differential to the driving wheels. The Formula Leopard 5 features a front-wheel drive (FWD) layout with the 5th generation DM plug-in hybrid system—the half shafts connect the front drive motor to the left and right front wheels, handling the combined output of the 210N·m electric motor and engine power while accommodating wheel steering and suspension movement. Its quality directly affects power transmission efficiency and driving safety.

Compatible with all BYD Formula Leopard 5 models (including 75km/115km range versions). According to vehicle data, the Seal 5 DM-i measures 4780×1837×1515mm with a wheelbase of 2718mm, front track of 1580mm, and rear track of 1590mm. All trims feature a front-mounted single motor layout with independent left/right half shafts.

• The half shaft assembly is a core drivetrain component—no regular replacement required under normal conditions, inspection every 60,000-80,000 km is recommended.

• When turning noise, acceleration vibration, or torn CV boot with grease leakage occurs, prompt inspection and replacement are recommended.

• Recommended to replace both left and right sides as a pair to ensure balanced power transmission.

Installation Instructions

Tools Required:

• Lift or jack with safety stands

• Socket wrench / Impact wrench

• Torque wrench

• Special axle nut socket

• Ball joint separator

 Installation Steps (General Reference):

1. Lift Vehicle: Raise the front using a lift, remove front wheels

2. Drain Transmission Fluid: Drain E-CVT fluid into clean container (if required)

3. Remove Caliper & Disc: Remove front brake caliper and secure to body, remove brake disc

4. Remove Axle Nut: Use special socket to remove the large axle nut

5. Disconnect Tie Rod & Lower Arm: Remove tie rod end and lower control arm ball joint connections

6. Remove Half Shaft: Remove the old half shaft assembly from the differential and hub

7. Compare & Confirm: Verify new part matches old in length, spline specifications, and structure

8. Install New Half Shaft: Insert splined end into differential, mount the other end to the hub

9. Pre-tighten Axle Nut: Install new axle nut, pre-tighten to specified torque

10. Reinstall Lower Arm & Tie Rod: Reconnect lower control arm ball joint and tie rod end, pre-tighten bolts

11. Reinstall Disc & Caliper: Reinstall brake disc and caliper, torque to specification

12. Reinstall Wheel: Reinstall wheel and tighten, lower vehicle

13. Torque Axle Nut: Torque axle nut to specification with vehicle on ground

14. Refill Transmission Fluid: Fill with E-CVT fluid to specified level

15. Road Test: Road test to confirm no noise or vibration

【Professional Tips】:

• Ensure the spline is fully inserted into the differential during installation—avoid spline misalignment damaging gears

• Recommended to replace both left and right sides as a pair for balanced transmission performance

• Wheel alignment inspection is required after half shaft replacement—ensure front wheel alignment parameters meet specifications