Cardone 66-2160 CV Axle Assembly - Rear Left

Rear Left CV Axle for Expedition and Navigator

Restore driveline performance with this Cardone CV Axle Assembly, part number 66-2160. It is built for rear left applications on 2003-2006 Ford Expedition models with a 9.75" ring gear and 2003-2006 Lincoln Navigator models.

Cardone engineers CV drive axles to address common failure points such as boot cracking, joint contamination, and vibration. The 66-2160 is a new axle assembly with splined input and output connections, a self-lock axle nut style, and a spindle nut included for a cleaner service job.

Key Features

• Fits 2003-2006 Ford Expedition, rear left, with 9.75" ring gear
• Fits 2003-2006 Lincoln Navigator, rear left
• Cardone CV Axle Assembly, part number 66-2160
• New axle retaining nut included
• Self-lock axle nut style
• Splined input shaft with 34 splines
• Splined output shaft with 33 splines
• Compressed length: 36.102 in.
• Neoprene boots with added bellows where needed to resist stress and ozone cracking
• Boot clamps are pneumatically crimped for a tight seal
• High-temperature, high-torque grease used for long service life
• Shafts are individually verified for straightness to help reduce vibration

Product Details

The Cardone 66-2160 CV axle assembly is engineered as a direct replacement for rear left driveline service on the Ford Expedition and Lincoln Navigator. CARDONE’s remanufacturing process focuses on the causes of repeat CV failure, including boot deterioration, seal wear, and shaft runout. The result is a replacement axle designed to deliver smooth operation and consistent joint movement under everyday driving loads.

This part cross-references Ford and Lincoln OE numbers 4L1Z4K139AA and 4L1Z4K139AB for the same application.

Common Problems This Part Can Address

• Clicking, snapping, or grinding noises from the rear driveline
• Grease leakage around the axle area from a damaged boot
• Vibration during acceleration caused by axle runout or shaft distortion
• Clunking or thumping from a worn CV joint
• Boot cracking or contamination that leads to joint wear

Installation Notes

• Do not let the CV axle hang unsupported during service; this can damage the inner joint.
• Use a torque wrench on the retaining nut and tighten to the vehicle manufacturer’s specification.
• Do not reuse a prevailing-torque lock nut; replace it with the supplied new nut.
• Inspect related seals during installation and replace worn transaxle seals as needed.
• If the ABS warning light appears after service, inspect the sensor ring, sensor, and wiring for damage.

Quality Assurance

Cardone applies testing and engineering methods developed from CV axle failure analysis to help the assembly meet or exceed OE performance expectations. Each shaft is checked for straightness to support vibration-free operation at speed, and the boot and grease design are selected to improve durability in demanding driveline conditions.