HALFSHAFT ASSEMBLY - FRONT - 25MM X 565MM SHAFT LEFT/RIGHT FOR MODEL Y 1188115-99-A: Power & Precision for Seamless Driving

Key Specifications

Engineered for Electric Performance

• Torque resistance: Its alloy composition (chromium + molybdenum) resists twisting under heavy load, ensuring efficient power transfer even during aggressive acceleration.
• Lightweight design: 15% lighter than conventional steel shafts, reducing unsprung weight to enhance suspension responsiveness and energy efficiency.
• Precision machining: Micro-polished surfaces and tight-tolerance splines eliminate backlash, preventing the "clunk" common in lower-quality alternatives during gear changes or regenerative braking.

Sealed CV Joints: All-Weather Reliability

• Heat-resistant boots: Made from tear-resistant neoprene, these boots seal in high-temperature molybdenum grease (rated to 120°C) and block out road debris, water, and salt.
• Low-friction design: The inner joint handles axial movement during suspension travel, while the outer joint accommodates steering angles up to 40°, ensuring smooth operation in tight turns.
• Longevity testing: Each joint undergoes 10,000+ rotation cycles at max load, guaranteeing reliable performance for 150,000+ km.

Universal Fit & OEM-Grade Installation

1. Aligns with Model Y’s existing hub and drive unit flanges—no modifications needed.
2. Uses OEM-spec bolts and nuts, torqued to Tesla’s recommended 245 Nm for the axle nut.
3. Includes new mounting hardware to ensure a secure, vibration-free fit.

Why It Matters for Your Model Y

• Smooth acceleration: Instant torque delivery without lag or shudder.
• Quiet operation: Eliminates noises from worn joints or loose splines.
• Optimal range: Efficient power transfer reduces energy waste, helping preserve battery life.

Durability You Can Trust

• Salt spray testing (500 hours) to resist corrosion in harsh climates.
• Fatigue testing (1 million+ cycles) to ensure longevity under repeated stress.
• Extreme temperature testing (-40°C to 80°C) to perform in all weather conditions.