The APDTY 112837 electric power steering (MDPS) flexible rubber coupler is a direct replacement bushing designed to repair steering column noise and looseness in select 2007-2018 Hyundai and Kia vehicles equipped with motor-driven power steering systems. This coupler eliminates the need for full steering column replacement, addressing the root cause of steering clunks, pops, and play documented in Hyundai/Kia Technical Service Bulletins 20-ST-001H, 19-ST-001H, and 14-ST-002-1. APDTY pioneered this cost-effective repair solution after technicians discovered the coupler could be replaced independently rather than replacing the entire steering column assembly.
Key Takeaways
- Replaces OE part numbers 563152K000FFF, 56315-2K000-FFF, and 56330-4Z000
- Fixes steering clunks, pops, and looseness in MDPS-equipped Hyundai and Kia models from 2007-2018
- Compatible with vehicles covered under TSB 20-ST-001H, 19-ST-001H, and 14-ST-002-1
- APDTY developed this repair as a cost-effective alternative to full steering column replacement
- Confirmed fitment includes 2007-2017 Elantra, 2010-2014 Sonata/Optima, 2013-2018 Santa Fe, 2010-2017 Soul, and others—verify your specific vehicle year/model before ordering
Buy APDTY 112837 directly from APDTY
What Is the MDPS Steering Coupler and What Does It Do?
The MDPS (Motor Driven Power Steering) coupler is a flexible rubber bushing that connects the steering column shaft to the electric power steering motor assembly. This coupler serves three critical functions:
- Vibration isolation: Absorbs road shock and motor vibration to prevent harshness from reaching the steering wheel
- Misalignment compensation: Allows slight angular deflection between the column and motor shaft to accommodate manufacturing tolerances and thermal expansion
- Torque transmission: Transfers steering input from the driver to the MDPS motor while maintaining smooth, responsive feel
Over time, the rubber material in this coupler deteriorates due to heat cycles, exposure to underhood temperatures, and mechanical stress. When the rubber degrades, the metal components inside the coupler develop play, causing the characteristic clunking, popping, or loose steering feel that Hyundai and Kia owners report.
What Are the Symptoms of a Failed MDPS Coupler?
A worn or failing MDPS coupler produces distinct symptoms that worsen over time:
- Clunking or popping noise when turning the steering wheel, especially at low speeds or when starting from a stop
- Loose or sloppy steering feel with noticeable play before the vehicle responds to steering input
- Clicking or knocking sounds from the steering column area when going over bumps or during parking maneuvers
- Steering wheel movement without corresponding wheel turn (increased free play)
- Intermittent noise that may be more pronounced in cold weather or after the vehicle sits overnight
These symptoms are often documented in service records with diagnostic trouble codes or customer complaints about steering noise. Hyundai and Kia issued Technical Service Bulletins 20-ST-001H, 19-ST-001H, and 14-ST-002-1 specifically addressing this issue, confirming the coupler as the root cause rather than the entire steering column assembly.
Which Vehicles Does APDTY 112837 Fit?
Based on the verified product fitment data, the APDTY 112837 MDPS coupler is confirmed compatible with the following vehicle applications:
| Make/Model | Year Range |
|---|---|
| Hyundai Azera | 2012-2017 |
| Hyundai Elantra | 2007-2017 |
| Hyundai Santa Fe | 2013-2018 |
| Hyundai Sonata | 2010-2014 |
| Hyundai Veloster | 2012-2017 |
| Kia Cadenza | 2014-2017 |
| Kia Soul | 2010-2017 |
| Kia Optima | 2010-2014 |
| Kia Forte/Forte5/Forte Koup | 2010-2017 |
| Kia Sorento | 2013-2014 |
Important: This part may also fit additional Hyundai and Kia models equipped with MDPS systems (including Accent, Elantra GT, Ioniq, Kona, Palisade, Tucson, and others) not explicitly listed above. Always verify compatibility using the live fitment chart on the product page before ordering, as variations exist between model years, trim levels, and steering system configurations.
APDTY 112837 Specifications and OE Cross-Reference
This replacement coupler meets or exceeds OE specifications:
| Specification | Details |
|---|---|
| APDTY Part Number | 112837 |
| Replaces OE Numbers | 563152K000FFF, 56315-2K000-FFF, 56330-4Z000 |
| Component Type | Flexible rubber steering coupler bushing |
| Application | MDPS (Motor Driven Power Steering) systems |
| TSB Coverage | 20-ST-001H, 19-ST-001H, 14-ST-002-1 |
| Material | Rubber with internal metal components |
| Condition | Brand new |
APDTY was the first company to identify and market this coupler as a standalone replacement part. Prior to this discovery, dealerships routinely replaced the entire steering column assembly—a repair costing significantly more in parts and labor—when the actual failure was limited to this small coupler bushing.
How Do You Replace the MDPS Steering Coupler?
Replacing the MDPS coupler requires moderate mechanical skill and specific procedures. While a detailed step-by-step guide is beyond the scope of this overview, the general process includes:
- Disconnect the battery and wait the manufacturer-specified time for SRS system discharge (typically 3+ minutes)
- Remove the steering column covers to access the coupler area
- Mark the steering shaft position before disassembly to maintain proper steering wheel alignment
- Remove the retaining hardware securing the coupler to both the steering shaft and MDPS motor shaft
- Install the new coupler ensuring proper alignment with your reference marks
- Torque all fasteners to manufacturer specifications
- Verify steering wheel centering and perform a road test
Safety Warning: This repair involves working near the steering column and airbag system. Disconnect the battery and allow adequate time for the airbag system to discharge before beginning work. Improper handling of SRS components can result in accidental airbag deployment causing serious injury. If you are not experienced with steering column service or SRS systems, have this repair performed by a qualified technician.
APDTY technicians produced a video demonstration showing that coupler replacement alone is sufficient in most cases and conditions, eliminating the need for full column replacement. This video served as proof-of-concept that this repair is both feasible and effective for addressing the steering noise and play issues documented in the TSBs.
Frequently asked questions
Does APDTY 112837 fit my 2015 Hyundai Elantra?
Yes, the APDTY 112837 is confirmed compatible with 2007-2017 Hyundai Elantra models equipped with MDPS electric power steering. However, always verify fitment using the live compatibility chart on the product page, as variations may exist between trim levels or production dates.
Can I replace just the coupler instead of the entire steering column?
Yes. APDTY pioneered this repair after discovering the coupler could be replaced independently. Prior to APDTY's video demonstration, dealerships routinely replaced the entire steering column assembly. In most cases and conditions, replacing only the coupler resolves the steering noise and play issues documented in Technical Service Bulletins 20-ST-001H, 19-ST-001H, and 14-ST-002-1.
Will this fix the clunking noise when I turn the steering wheel?
If the clunking or popping noise is caused by a worn MDPS coupler bushing (the most common cause in affected Hyundai/Kia models), replacing it with APDTY 112837 will eliminate the noise and restore tight steering feel. The symptoms addressed by this part include clunking when turning at low speeds, steering column pops over bumps, and loose or sloppy steering with noticeable play.
Do I need special tools to replace the MDPS coupler?
You'll need basic hand tools including sockets, wrenches, and screwdrivers to remove the steering column covers and access the coupler. A torque wrench is recommended to properly tighten the coupler fasteners to specification. The repair also requires safety precautions for working near the airbag system, including battery disconnection and adequate SRS discharge time before starting work.
The APDTY 112837 MDPS steering coupler bushing provides a proven, cost-effective solution for steering clunks, pops, and looseness in 2007-2018 Hyundai and Kia vehicles equipped with electric power steering. By replacing only the failed coupler instead of the entire steering column, this repair directly addresses the root cause documented in manufacturer Technical Service Bulletins while saving significant time and expense. If your Hyundai Elantra, Sonata, Santa Fe, Veloster, Azera, or Kia Forte, Optima, Soul, Cadenza, or Sorento exhibits steering noise or play, verify your vehicle's compatibility and order APDTY 112837 to restore tight, quiet steering performance.