Steering Knuckle Ball Joint 45503-30070 for Toyota Mark X
4550330070 - Chassis parts
Price Details
Dealer Price ≠ Your Price
Official dealer price is only a benchmark. Your LongTop quote is significantly lower.
| Brand | Longtop Supply Quote | Action |
|---|---|---|
| FAW Toyota | $34.05 | Check Better Price |
| GAC Toyota | $44.34 | Check Better Price |
| Imported Toyota | $43.86 | Check Better Price |
| Lexus | $44.34 | Check Better Price |
Replacements
Alternative OE numbers related to this product.
| Brand | Original OE | Replacement OE |
|---|---|---|
| - | 4550330070 | 4550330090 |
Compatible Models
Vehicle models currently mapped to this OE part.
Show all 30 mapped vehicle models
Product Overview
This is a genuine Lexus OEM steering knuckle ball joint (left), OE 45503-30070, which links the steering rack to the knuckle and sets the steering angle. It is used on LEXUS GS SERIES, LEXUS GS30/35/43/460, LEXUS GS450H, LEXUS GS460/430/350, LEXUS IS F and LEXUS IS250/300, built from 2003 to 2011. 7 cross-reference numbers apply, including SR-T270, SR-T270-M and CR0663.
Send your OE number or VIN for a wholesale quotation and worldwide shipping.
Technical Specifications
| OE Number | 4550330070 |
| Part Name | Steering knuckle ball joint (left) |
| Brand | Toyota |
| Position | Front Inner Left, Right (Steering Rack End) |
| Type | Steering Rack End Ball Joint (Inner Tie Rod Knuckle Ball Joint) |
| Weight | 1.90 lbs |
| Package Size | 405 x 120 x 70 mm |
| Unit Weight | 0.65 kg |
| Material | Steel |
| Fitment | Lexus GS300, GS350, GS430, GS450h, GS460 2006-2011 (GRS190L GRS191L URS190L UZS190L GWS191L), Lexus IS F 2008-2014 (USE20L), Lexus IS250, IS350 2006-2015 (GSE20L GSE21L), engines 2GR-FSE, 3GR-FSE, 3UZ-FE, 1UR-FSE, 2UR-GSE, 4GR-FSE |
OE Cross-Reference
| SR-T270 | 555 |
| SR-T270-M | 555 |
| CR0663 | CTR |
| CRT-93 | CTR |
| 0122-X2WD | Febest |
| TA3160 | Delphi |
| 45503-30090 | Toyota |
Questions and Answers
Which Toyota or Lexus vehicles is 45503-30070 used on?
45503-30070 covers LEXUS GS SERIES, LEXUS GS30/35/43/460, LEXUS GS450H, LEXUS GS460/430/350, LEXUS IS F and LEXUS IS250/300, with production years 2003 to 2011.
What part numbers replace 45503-30070?
Listed on this page are 7 interchangeable numbers for 45503-30070, among them SR-T270 (555), SR-T270-M (555), CR0663 (CTR), CRT-93 (CTR).
How can I verify that 45503-30070 is a genuine Toyota part?
A genuine Steering Knuckle Ball Joint (Left) shows the Toyota number 45503-30070 on the box label with the country-of-origin marking. On the part itself, the metal carries the supplier’s mark cast or stamped next to Toyota’s own mark, not a separate printed sticker; and the part number is die-stamped or laser-etched into the metal itself rather than printed in ink, and it matches the box label. Documentation is available on request – commercial invoice, packing list and Certificate of Origin.
Is 45503-30070 a front or rear part?
This part is listed for the Front Inner Left, Right (Steering Rack End) position.
How many pieces are needed for 45503-30070?
Sold as one piece per position – check the quantity required for your application.
Is the genuine part worth it compared with an aftermarket equivalent?
What the genuine item buys you is concrete: the OE heat treatment and surface finish help the part resist wear, corrosion and seizing; and the part is machined to OE tolerance, so it mounts and seats without shimming or rework. These are the aftermarket equivalents you may also see quoted.
What documentation comes with an order?
Each order can ship with the commercial invoice, the packing list and, on request, a Certificate of Origin; the part number is die-stamped or laser-etched into the metal, so you can match it against the invoice.
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