Sitting inboard of the track rod end where the steering rod meets the rack, the tie rod axle joint transmits the rack's pushing and pulling force into the rod assembly while allowing the angular articulation needed for steering lock and suspension travel. Unlike the exposed outer joint, this inner component operates behind the rack gaiter and often escapes visual inspection until the gaiter splits and road contamination enters. Once contaminated, the internal ball pivot wears rapidly and develops free play — the classic symptom is a knock that appears on full steering lock or when reversing over uneven ground, because the joint is loaded to its maximum angle at those moments. Persistent looseness leads to a reduction in steering precision and in severe cases allows the track rod geometry to shift under hard cornering load. Because the rack-end thread form, joint body diameter, and length vary by chassis, matching the OE number is the only reliable way to ensure the replacement seats correctly and does not affect steering rack travel limits. Lemförder and TRW supply a high proportion of European rack-end joints at the factory level, with CTR and Stellox widely used in the quality aftermarket. Whenever a split gaiter is being replaced, the inner joint should be inspected as a matter of course.
The tie rod axle joint mates directly to the steering rack's threaded end, and the thread size and pitch are specific to the rack variant fitted to your car. Using your full vehicle identification — make, model, year, and engine variant — in the search filter returns only compatible units. For additional confidence, the part number is sometimes stamped on the existing joint or the rack housing; comparing this directly against the OE references listed avoids any ambiguity from mid-model engineering changes.
OEM joints such as those from Lemförder or TRW are machined to the steering rack manufacturer's exact thread and body tolerances, carrying the original OE number. Well-regarded aftermarket brands including CTR and Stellox produce joints to equivalent dimensional accuracy, making them a sound choice for routine maintenance. Cheaper unbranded units occasionally have thread form errors that cause abnormal rack wear or insufficient engagement depth, which is why sticking to brands with a verifiable quality history matters more for this part than for many others.
Yes, always. Because the tie rod axle joint determines the effective length of the steering rod assembly, any length change — even fractional — shifts the toe setting on that axle. Workshop procedure is to measure and record the existing thread engagement depth before removal, then replicate it on installation to keep alignment as close to original as possible. A full four-wheel alignment should still be carried out after the job to confirm and adjust toe to specification.
A knock or clunk from the steering area that appears specifically at full lock or when manoeuvring at slow speed is the most characteristic symptom of inner joint wear, as the ball pivot is loaded to its maximum travel angle in those positions. On a straight road the effect is often subtler than a worn outer joint, appearing as a very slight vagueness or delay in steering response. If the steering rack gaiter has split and accumulated grit, accelerated internal wear is almost certain and the joint should be replaced immediately.
Showing 100 of 6,682 Tie rod axle joint OE numbers. Enter the OE on the main OE search to jump to any reference.
