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Axle Assemblies

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Frequently Asked Questions

A complete axle assembly has to match more than the axle-family name. Check the vehicle application, front or rear position, model year, track width, bolt pattern, spline configuration, brake setup, gear ratio, and the suspension or steering mounts used by that assembly. Use the application data for the exact axle package rather than assuming any axle with the same family name will bolt in.

Yes. When both axles are driven, the front and rear axle gear ratios need to match so they rotate at compatible speeds when four-wheel drive is engaged. If you are replacing or regearing only one driven axle, confirm its ratio against the other axle before operating the vehicle in 4WD. Do not assume the ratio from the vehicle model alone if either axle has been changed.

A complete axle assembly makes sense when the replacement or upgrade needs the housing and major axle components as one matched package rather than a single shaft, bearing, differential, or gear set. Many crate axles are sold as assembled bolt-in packages with application-specific gearing and differential options already configured. If only one serviceable component is worn or damaged, the more specific axle-shaft, bearing, differential, or ring-and-pinion category may be the narrower repair purchase.