Cardone 66-2161 CV Axle Assembly - Rear Right

Cardone CV Axle Assembly for Rear Right Service

Cardone 66-2161 is a new CV axle assembly engineered for rear right applications on select Ford Expedition and Lincoln Navigator models. It is built to address common axle failure points with verified shaft straightness, sealed boot construction, and OE-style spline connections for dependable driveline operation.

Key Features

• Fits 2003-2006 Ford Expedition, rear right, with 9.75" ring gear
• Fits 2003-2006 Lincoln Navigator, rear right
• ABS ring included for proper wheel speed signal integration
• Self-lock axle nut locking type with spindle nut included
• Splined input shaft with 34 splines and splined output shaft with 33 splines
• Compressed length: 34.409 inches
• Neoprene boots with added bellows where needed to reduce stress and cracking
• Boot clamps are pneumatically crimped for a secure seal
• High-temperature, high-torque grease for driveline service
• Transmission seal diameter is precision-machined after heat treatment for seal life

Product Details

Cardone CV axle assemblies are engineered from testing and failure analysis of original CV components. For this application, the design focuses on reducing repeat failures caused by boot cracking, contamination, vibration, and seal wear. Shaft straightness is individually verified to support smooth operation, while the boot and grease package are selected to handle demanding driveline loads in rear right Ford Expedition and Lincoln Navigator service. Cardone 66-2161 is a direct-fit driveline replacement for technicians servicing 2003-2006 Ford Expedition rear right models with a 9.75" ring gear and 2003-2006 Lincoln Navigator rear right vehicles. This part cross-references Ford and Lincoln OE numbers 4L1Z4K138AA and 4L1Z4K138AB for the same application.

Common Problems This Part Can Address

• Clicking, snapping, or grinding from the rear driveline during acceleration or turning
• Grease leakage around the axle boot or suspension area
• Vibration caused by axle shaft runout or wear
• ABS warning light triggered by a damaged sensor ring or related axle component
• Noise or binding from a worn outer or inner CV joint

Installation Notes and Tips

• 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 supplied new nut.
• Replace transaxle seals when servicing CV axle assemblies to help prevent leaks.
• Inspect the ABS sensor, wiring, and sensor ring during installation to avoid warning light issues.

Quality Assurance

Cardone uses engineering and inspection processes focused on OE-level performance, including 100% shaft runout verification to reduce vibration concerns. The axle is supplied new and includes the complete axle and instruction sheet for service support.