Koxot Front CV Axle Shaft Pair for Hyundai Sonata 2015–2019 & Kia Optima 2016–2020 L4 2.4L — Driver & Passenger, Sealed Boots

Koxot 2PCS front CV axle shaft assemblies replace worn or damaged front axles on Hyundai Sonata (2015–2019) and Kia Optima (2016–2020) with a direct-fit driver and passenger side pair.

These two axle assemblies (NCV75078 for left and NCV71001K for right) are built to OEM-compatible dimensions and engineered to restore smooth torque transfer from the engine to the wheels. Each shaft includes sealed CV joints with heavy-duty rubber boots, designed to resist contamination and reduce premature wear so the vehicle regains steady handling and responsiveness.

How do these CV axles improve driving feel and stability?

The axles are designed to transmit constant velocity power efficiently while accommodating steering angles, which reduces vibration and inconsistent torque during turns. The intermediate shaft design helps carry higher torque loads so you feel smoother acceleration and steadier cornering.

• Engineered for balanced torque transfer and reduced drivetrain vibration
• Inner and outer CV joints sized for consistent power under load
• Intermediate shaft supports higher torque without power loss

Are these assemblies durable enough for rough roads and varying weather?

Yes—each shaft comes with a reinforced rubber boot that seals the CV joint to block dust, water, and debris, which slows wear and extends service life. The materials and boots are selected to resist cracking under temperature changes and to handle wet, dry, or unpaved road conditions.

• High-quality rubber boots for contamination resistance
• Sealed joints that prevent grease loss and intrusion
• Materials chosen to withstand thermal and mechanical stress

Will these axles fit my vehicle and how easy is installation?

These axles are manufactured to match OEM specifications for Hyundai Sonata L4 2.4L (2015–2019) and Kia Optima L4 2.4L (2016–2020). Fitment is straightforward when compared to OEM replacements, and the kit includes one left and one right assembly so both sides can be serviced together for consistent performance.

• Left: NCV75078 (66-3829 / 663829 / 49500C2210)
• Right: NCV71001K (66-3830 / 663830 / 49501C2260)
• Direct-fit dimensions to simplify replacement of worn shafts

What support is provided after purchase?

Koxot offers one-year support for these CV axle assemblies; if you find a fitment problem or defect within that period, contact the seller for assistance. To avoid returns, use a vehicle adapter or verify part numbers before ordering so you match the correct side and model year.

• 1-year post-purchase support from Koxot
• Fit verification recommended prior to installation
• Seller assistance available through the purchase platform

Who is this for: This pair is intended for Hyundai Sonata and Kia Optima owners or technicians who need a reliable, OEM-dimension replacement for worn front CV axles. It’s best for those who want both sides replaced at once to restore balanced handling and reduce drivetrain vibration, and for DIY mechanics or shops looking for a cost-effective direct-fit alternative to OE parts.