57700-1M600
Kia
57700-1M600
Kia
2013, 2012, 2011, 2010, 2009
Chassis System
Steering Gear / Rack and Pinion
| Quantity: | |
|---|---|
Product Description
The 57700-1M600 is a hydraulic rack and pinion steering assembly built to original Mobis production specifications, designed for Kia compact sedan chassis systems. This gear and linkage assembly carries the OEM part number 57700-1M600, and is supplied for commercial procurement by auto parts wholesalers, commercial maintenance teams, and industrial clients sourcing fit-verified steering components.
Parameter | Details |
OE Number | 57700-1M600 |
Official OEM Name | GEAR ASSY-STEERING / STEERING RACK AND PINION ASSEMBLY |
Interchange OEM Numbers | 57700-1M600, 577001M600, RACK-1M600 |
Applicable Vehicles | Kia Forte TD/K3, Cerato TD (Second Gen) (2009-2013) |
Steering System Type | Rack and Pinion — Hydraulic Power Assisted (HPS) |
Mount Position | Crossmember/subframe mounted underneath vehicle (steering gear location varies by FWD/RWD layout) |
Input Connection | Universal joint coupler from steering column intermediate shaft (lower shaft) |
Output Connection | Two tie rod ends (inner) thread into rack piston left/right sides |
Turns Lock-to-Lock | Approximately 2.5-3.5 turns (varies by rack gearing ratio and vehicle) |
Overall Rack Length | Approx 700-900 mm (varies by vehicle track width and packaging) |
Rack Housing Diameter | Approx 40-50 mm |
Pinion Shaft | Splined input shaft (matched to U-joint yoke spline count) |
Net Weight | Approx 6.5-11.0 kg (14.3-24.3 lbs) depending on hydraulic/electric assist type |
Package Size | 950 × 150 × 200 mm with protective caps on tie rod threads and input spline |
Rack Bar Material | Induction-hardened carbon steel rack bar (precision-cut machine teeth along full length) |
Rack Housing Material | Aluminum alloy die-casting (lightweight) or steel tube construction (hydraulic models) |
Pinion Shaft Material | Case-hardened alloy steel supported by sealed ball bearings or needle bearings |
Hydraulic Cylinder | Integrated cylinder bore with hard-chromed piston surface (HPS models) or electric motor + ball-nut drive mechanism (EPS models) |
Seals | Nitrile and fluorine rubber O-rings and lip seals throughout (critical for power assist integrity) |
Tie Rod Threads | Rolled threads on rack bar ends (left-hand and right-hand thread pair) |
Production Standard | Assembled to Mobis/Hyundai-Kia steering system OEM specification; compliant with IATF16949 automotive safety-critical steering component certification |
Quality Assurance | 100% rack tooth lead error inspection and hydraulic pressure decay test before shipment |
Alternative Aftermarket Part Numbers | RACK-HPS, SG-57700-1M, STEER-M600 |
Precision-cut helical gear teeth are machined to DIN or JIS Q7-Q9 accuracy grades, creating uniform meshing between the pinion and rack bar. This controlled tooth geometry maintains consistent steering ratio across the full input range, reduces free play, and supports smooth steering feel from lock to lock, lowering the risk of unstable highway handling or off-center wheel alignment after installation.
On HPS units, pressurized hydraulic fluid (80-120 bar) from the engine-driven pump acts on a double-acting cylinder integrated with the rack bar. This setup amplifies driver steering input by 15-20 times, reducing the physical effort required for low-speed parking and tight urban maneuvers.
The fully sealed aluminum housing and multi-stage seal arrangement protect internal components from contamination and fluid loss. Sealing points include the pinion input shaft, rack bar bushings, cylinder ends, and tie rod threads, each engineered to withstand under-hood heat and vibration. Unaddressed seal wear can lead to gradual performance decline, from minor seepage to complete loss of power assist.
Replacing a worn steering rack with this 57700-1M600 assembly resolves common sedan steering issues: excessive wheel free play, heavy steering from internal seal failure, misaligned wheel position from impact damage, fluid leakage, and binding from worn bearings. Professional four-wheel alignment is required after installation, and system fault verification is recommended for all vehicles.
This steering gear assembly matches OEM part number 57700-1M600 and fits the following compact sedan models:
Kia Forte (TD/K3): model years 2009-2013
Kia Cerato (TD, second generation): model years 2009-2013
Buyers can confirm fitment by cross-referencing the OEM part number with a vehicle VIN through authorized dealer channels.
This condition is most often caused by worn rack and pinion gear teeth, excessive clearance in the rack guide, or worn inner tie rod ball joints. Signs include over 15mm of free play at the steering wheel before wheel response, clunking noises during turns, and vehicle wandering on straight roads. Initial repair attempts can include adjusting rack guide preload to factory specifications; if gear wear exceeds limits, full rack replacement is required. Inner and outer tie rods should be replaced as a set, with a mandatory professional alignment post-installation.
Uneven or heavy steering typically arises from internal spool valve wear, degraded fluid restricting flow, or a failing power steering pump. Symptoms include increased effort during parking, differing feel between left and right turns, and audible pump whine under load. A full system fluid flush is the first diagnostic step; if symptoms remain, the steering rack and pump should be inspected and replaced as necessary.
Yes, this assembly is designed for second-generation Kia Cerato TD models produced from 2009 to 2013, including 2010 model year vehicles. It also fits Kia Forte TD/K3 models from the same year range, matching OEM part number 57700-1M600.
Every unit undergoes two core pre-shipment tests: 100% rack tooth lead error inspection to verify gear accuracy, and a full hydraulic pressure decay test to confirm seal integrity and pressure holding performance.
Standard automotive hand tools are sufficient for most installation procedures. A torque wrench is recommended to ensure all fasteners are tightened to factory torque specifications. Refer to the professional service manual for the specific vehicle model for detailed installation steps.
Bulk orders support three packaging configurations: genuine Mobis standard packaging, neutral unbranded aftermarket packaging, and custom branded aftermarket packaging. Neutral packaging is the most commonly selected option for commercial wholesale operations.
For auto parts wholesalers and commercial maintenance teams building inventory for compact sedan repair services, this 57700-1M600 steering assembly provides dimensionally consistent fitment aligned with original Kia production specifications. For fitment confirmation or bulk order inquiries, contact our support team with your part number and vehicle details.
