57724-A9000
57724-A9000
Kia
2021, 2020, 2019, 2018, 2017, 2016, 2015
Chassis System
Inner Tie Rod End / Outer Tie Rod End
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Product Description
The 57724-A9000 inner tie rod end is a chassis steering component manufactured to Mobis/Hyundai-Kia OEM specifications. It is designed for direct installation on specified Kia models, with all production processes conducted in IATF16949-certified facilities. This page covers detailed specifications, design features, vehicle compatibility, field solutions, and procurement terms for commercial buyers across global markets.
Item | Detail |
OE Number | 57724-A9000 |
Official OEM Name | END ASSY-TIE ROD, LH (INNER) |
Interchange Cross Reference | 57724A9000, TR-A9000 |
Alternative Aftermarket Part Numbers | TROD-INN-A9000, ROD-57724-A9 |
Mount Position | Steering rack assembly (inner tie rod end connects directly to rack piston) |
Steering Type | Rack and pinion hydraulic or electric power-assisted steering (EPS/HPS) |
Matching Hardware Included | Castle nut + cotter pin (outer) or jam nut (inner) |
Parameter | Value |
Net Weight | 0.55-0.82 kg (1.2-1.8 lbs) |
Overall Length | 180-260 mm (varies by inner vs outer and vehicle platform) |
Inner Thread (for inner rods) | M16 × 1.5 or M18 × 1.5 rack thread (left-hand or right-hand thread as required) |
Ball Stud Thread (for outer rods) | M10 × 1.25 or M12 × 1.25 castle nut thread |
Taper Angle | Standard OEM ball stud taper (typically 6-degree included angle) |
Package Size | 240 × 90 × 70 mm |
Component | Material Specification |
Rod Body | One-piece forged 40Cr or SAE 4135 quenched and tempered alloy steel |
Ball Stud | Case-hardened alloy steel (58-62 HRC surface) with precision-ground spherical radius |
Ball Seat | Hardened steel socket with PTFE-based dry-film liner pre-filled with lithium grease |
Dust Boot | Double-lip neoprene or thermoplastic elastomer boot with integrated metal crimp ring |
Internal Bearing | Spherical bearing assembly with sintered PTFE liner for low-friction articulation |
Fasteners | Zinc-plated or Dacromet-coated carbon steel nuts and pins |
Item | Specification |
Production Standard | Forged and machined to Mobis/Hyundai-Kia steering OEM specification, fully compliant with IATF16949 automotive steering safety-component certification |
Normal Service Mileage | 80,000-120,000 km under mixed road conditions (shortened by frequent pothole/rough road exposure) |
This tie rod end is produced from a single billet of alloy steel using precision closed-die hot forging, as an alternative to sand-cast or powder-metal production methods. This manufacturing process creates a continuous unbroken grain flow that follows the curved contour of the rod body. The resulting structure delivers resistance to bending and impact shock loading from pothole strikes and curb impacts, and reduces the risk of internal casting voids or fatigue crack initiation points.
The ball stud rotates within a sintered PTFE-impregnated bearing liner that delivers consistent low friction across the full range of steering articulation angles. The bearing assembly is pre-filled with high-temperature lithium complex grease, which maintains light steering effort and reduces the notchy or sticky steering feel associated with worn or dried-out tie rod ball joints.
The elastomer dust boot is designed with dual sealing lips. A primary lip blocks the ingress of large road debris, while a secondary scraper lip removes accumulated contaminants from the ball stud surface during suspension compression and rebound motion. The integrated metal crimp ring ensures permanent boot-to-body attachment that remains secure during extreme articulation or high-pressure wash exposure.
Replacement of worn tie rod ends reduces excessive steering free play, addresses uneven or off-center tire wear caused by inconsistent toe-angle alignment, and resolves clunking or knocking noise over bumps resulting from loose ball joint clearance. Most critically, it reduces the risk of ball joint separation that can lead to complete loss of steering control. Professional wheel alignment is mandatory after installation.
This inner tie rod end fits the following vehicle applications:
Make: Kia
Model: Carnival (also referenced as Sedona YM/YUP, Carnival YM on VQ Platform)
Model Years: 2015-2021
Vehicle Class: MPV / Minivan
System: Chassis System
Part Type: Inner Tie Rod End / Outer Tie Rod End
Root Causes
Worn inner ball joint causing excessive free play
Damaged internal spring mechanism from impact
Grease loss from torn rubber boot
Metal-to-metal wear from water and dirt contamination
Diagnosis
Clunking noise when turning the steering wheel at low speed
Vehicle wanders or pulls on straight roads
Excessive steering free play (>15mm at steering wheel rim)
Detectable free play when grabbing the tire at 3 and 9 o'clock positions and shaking with the front end jacked up
Solution Steps
Replace both left and right inner tie rods as a pair
Replace outer tie rod ends simultaneously if wear is present
Count the number of turns when removing the old tie rod to maintain approximate toe setting
Tighten inner tie rod to steering rack to 70-90 N·m after installation
Conduct professional wheel alignment after installation
Check and adjust toe-in to manufacturer specification
Root Causes
Rubber aging and cracking from heat and ozone exposure
Physical damage from road debris
Boot clamp failure allowing dirt and water ingress
Diagnosis
Visible cracks, tears, or complete separation of the rubber boot
Grease leakage visible around the boot area
Solution Steps
Replace only the boot and repack with fresh grease if no free play is present and internal grease remains clean
Replace the complete 57724-A9000 assembly if free play or contamination is present
Install a new boot clamp and ensure a watertight seal
Root Causes
Incorrect toe setting from worn tie rod changing alignment
Bent inner tie rod from impact with curbs or potholes
Diagnosis
Tire tread blocks show a feathered or sawtoothed texture when touched by hand
Inner or outer edge of the tire wears faster than the rest of the tread
Vehicle steering wheel is off-center when driving straight
Solution Steps
Replace the worn or bent 57724-A9000 inner tie rod
Perform professional 4-wheel alignment
Rotate and balance tires after alignment
This component is supplied for wholesale distributors, repair chains and other commercial procurement scenarios across global markets. The minimum order quantity starts at 500 units, with support for order volumes ranging from 500-1000 units to accommodate different inventory planning needs. Two categories of packaging solutions are available to align with varied brand operation requirements:
Genuine (MOBIS) Standard Packaging
Aftermarket/Brand Packaging, including neutral packaging (most common for generic distribution) and custom brand packaging for private label programs
This is an aftermarket replacement manufactured to meet or exceed OEM specifications. It delivers equivalent fit, form, and function as the original equipment part.
Refer to the Vehicle Compatibility section for the complete application list. For vehicles not listed, contact customer support with your VIN number for fitment verification.
Standard automotive hand tools are sufficient for most installations. A torque wrench is recommended to ensure all fasteners are tightened to factory specifications. Refer to a professional service manual for your specific vehicle model.
Warranty applies to manufacturing defects under normal use conditions. Refer to the official warranty policy for specific coverage details. Improper installation, racing use, or modifications will void the warranty.
It is recommended to replace related wear items simultaneously, such as both left and right sides, seals, gaskets, and fluids, to support balanced operation and reduce repeated labor costs.
Cross-reference the OEM part number 57724-A9000 with your vehicle's VIN through an authorized dealer or online compatibility checker. The OEM part number is a reliable identifier for correct part matching.
