TrakMotive NI-8399 CV Axle Shaft - Rear Left

CV Axle Shaft for Infiniti Q45 Rear Left

TrakMotive NI-8399 is a new CV axle shaft for the rear left position on 1990-1996 Infiniti Q45 models. It is built with a conventional outboard joint, a flange-style inboard connection, and a neoprene boot for driveline service in a direct-fit replacement format.

The TrakMotive CV Axle Shaft line focuses on application-specific driveline replacement parts. For this Infiniti Q45 rear left application, NI-8399 is supplied with an axle nut and uses a hex head, cotter pin locking type, and M24 x 1.5 thread size for the listed fitment.

Key Features

• Fits 1990-1996 Infiniti Q45, rear left
• TrakMotive part number NI-8399
• New CV axle shaft for driveline repair
• Flange inboard joint and conventional outboard joint design
• Neoprene boot material
• 32 outboard splines
• Overall compressed length: 25.04 in. (636 mm)
• Axle nut included with hex head and cotter pin locking type

Detailed Description

NI-8399 is a TrakMotive CV axle shaft engineered for the rear left side of the Infiniti Q45 from 1990 through 1996. It is a new replacement axle with a 32-spline outboard end, flange-style inboard connection, and a compressed length of 25.04 inches to match the listed application. The neoprene boot helps protect the joint assembly, while the included axle nut is specified with a 1 1/4 in. hex size and M24 x 1.5 thread.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application. Search terms such as Infiniti Q45 rear left CV axle shaft, 1990-1996 Infiniti Q45 driveline replacement, and TrakMotive NI-8399 axle shaft align with this exact fitment.

What It Helps Address

• Clicking or popping from a worn CV joint
• Vibration during acceleration or cruising
• Grease leakage from a damaged boot
• Excessive driveline play at the rear axle
• Noise caused by a fatigued axle shaft assembly

Installation Notes and Tips

Verify rear left fitment against the vehicle before installation. Confirm axle nut thread size, spline count, and compressed length match the original part. Inspect the hub, flange, and surrounding driveline components for wear before installing the new axle shaft. Use the specified axle nut and locking method for the application.

Quality Assurance

TrakMotive identifies this axle shaft as a new part and backs it with a limited lifetime warranty. The manufacturer also states ISO 9001:1007 and TS 16949:2009 certification, supporting controlled production and quality management for this CV axle shaft.