The same steering component goes by different names depending on where you’re shopping for it — and searching with the wrong regional term is a common way to miss the exact part you need in a parts catalogue.
Regional Terminology
| Component | UK | Australia | US |
|---|---|---|---|
| Outer steering joint | Track rod end (TRE) | Tie rod end | Outer tie rod end |
| Inner steering joint | Track rod / inner track rod | Rack end / inner tie rod | Inner tie rod |
| Complete rack-to-knuckle assembly | Track rod assembly | Tie rod assembly | Tie rod assembly |
| Toe adjustment | Tracking | Wheel alignment / toe adjustment | Alignment / toe |
In the UK, "track rod end" is the most useful search term — UK repair sources commonly use it interchangeably with "tie rod end," so either term tends to work, but "track rod end" is the more region-native phrasing.
In Australia, "tie rod end" is generally the safer catalogue search term. Major Australian parts suppliers categorize these parts as tie rod ends, though Australian 4WD and off-road suppliers commonly use "track rod end" as well — both terms circulate, but "tie rod end" is more consistently the primary catalogue listing.
Don’t Rely on the Name Alone — Check the Dimensions
Two track rod ends with the same nominal thread size can still be different parts. Before treating anything as a match, confirm:
- Ball-stud thread (e.g., M10×1.25, M12×1.5, M14×1.5)
- Rod/adjuster thread diameter and pitch
- Thread direction (RH or LH)
- Taper dimensions, especially at the steering knuckle
- Stud length
- Ball-center-to-thread/shoulder dimension
- Hex or flats size
- Overall length
- Boot dimensions
- Mounting/seat dimensions
Thread size alone doesn’t identify a correct replacement — two M12 track rod ends can differ in pitch, taper, stud length, or overall body geometry even though the headline thread spec matches.
A Terminology Trap Worth Knowing: LH/RH
"LH" and "RH" can refer to either the thread direction or which side of the vehicle the part mounts on — and those two things aren’t necessarily the same. Some regional parts listings explicitly label thread direction separately from vehicle side specifically to avoid this confusion. Don’t assume one implies the other; confirm which meaning a specific listing is using before ordering.
Related reading: The Engineer’s Guide to Right-Hand (RH) and Left-Hand (LH) Threads · Cross-Referencing OEM Part Numbers for Rod End Replacement
