Cardone 66-3421 CV Axle Assembly - Front Left

Cardone CV Axle Assembly for Dodge Neon

Restore smooth driveline operation with this Cardone CV axle assembly, part number 66-3421. It is built for the front left position on 2003-2005 Dodge Neon models and is engineered for vibration-free performance with OE-style fit and function.

Cardone’s CV axle program focuses on the failure points that commonly affect driveline service life, including boot durability, joint contamination, and shaft runout. This makes the 66-3421 a practical replacement for a Dodge Neon front left CV axle assembly when you need consistent engagement, proper ABS signal support, and dependable road feel.

Key Features

• Fits 2003-2005 Dodge Neon, front left
• Part number 66-3421
• ABS ring included with 46-tooth count
• New spindle nut included
• Splined input shaft with 27 splines
• Splined output shaft with 26 splines
• Compressed length: 23.3125 in.
• Neoprene boot design with added bellows where needed to resist cracking and stress
• High-temperature, high-torque grease for driveline service
• Individually verified shaft straightness for reduced vibration

Detailed Description

The Cardone 66-3421 CV axle assembly is a direct replacement for the front left axle on 2003, 2004, and 2005 Dodge Neon vehicles. It is designed to address common CV axle failure causes by using durable boot construction, precision-machined sealing surfaces, and shaft verification for runout control. The result is a replacement axle built for stable operation and proper driveline engagement.

This Cardone CV axle assembly for Dodge Neon applications includes an ABS ring and a new spindle nut, helping support a cleaner installation and correct wheel speed sensor operation when the original components are worn. Part number 66-3421 is also referenced in OE interchange listings for Dodge 5037445AA, 5037445AB, and 5037623AA.

Common Problems This Part Can Address

• Clicking or snapping noises during hard turns
• Grease leakage around a torn CV boot
• Front-end vibration during acceleration
• ABS warning light after axle replacement
• Grinding or binding from a worn outer CV joint

Installation Notes and Tips

• Fits 2003-2005 Dodge Neon, front left only.
• Do not let the axle hang unsupported during service; this can damage the inner joint.
• Use a torque wrench on the retaining nut and tighten to manufacturer specifications.
• Do not reuse a prevailing-torque lock nut; install the new spindle nut supplied with the axle.
• Replace transaxle seals when servicing CV axle assemblies to help prevent leaks.
• If the ABS light remains on after installation, inspect the sensor ring, sensor, and nearby wiring for damage.

Quality Assurance

Cardone engineers its CV drive axles to meet or exceed original equipment performance targets through testing, runout verification, and boot design improvements. The brand’s CV axle development process is focused on reducing repeat failure causes and supporting long-term driveline reliability.