1. Introduction
This manual provides essential information regarding the OMNI5 K1580 Rear Motor and Upper Transmission Mount set. It covers product compatibility, components, general installation guidelines, function, maintenance, and specifications. Please read this guide thoroughly before attempting any installation or maintenance procedures.
2. Product Compatibility
The OMNI5 K1580 mount set is designed for specific vehicle models and transmission types. Verify your vehicle's make, model, year, and transmission before proceeding.
- 2008-2012 Honda Accord with 2.4L Automatic Transmission
- 2009-2013 Acura TSX with 2.4L Automatic Transmission
Interchange Numbers: A4570, A4561. Other Numbers: 9443, 9459.
3. Product Components
The K1580 set includes two primary mounts:
- Rear Motor Mount (GP9443 / A4570 / 9443): Supports the engine from the rear, reducing vibration and movement.
- Upper Transmission Mount (GP9459 / A4561 / 9459): Supports the upper part of the transmission, contributing to stability and dampening.

Image 1: The OMNI5 K1580 set, showing both the rear motor mount and the upper transmission mount.

Image 2: Close-up view of the OMNI5 GP9443 Rear Motor Mount, designed to secure the engine.

Image 3: Close-up view of the OMNI5 GP9459 Upper Transmission Mount, providing support for the transmission.
4. Setup and Installation
Installation of engine and transmission mounts requires specialized tools and automotive knowledge. It is highly recommended that installation be performed by a qualified professional mechanic.
General Guidelines:
- Safety First: Always ensure the vehicle is securely supported on jack stands or a lift. Disconnect the battery if necessary.
- Identify Mounts: Locate the existing rear motor mount and upper transmission mount on your vehicle.
- Support Engine/Transmission: Use a jack with a wood block to support the engine and transmission assembly before removing any mounts.
- Remove Old Mounts: Carefully unbolt and remove the old mounts. Note their orientation for correct installation of new parts.
- Install New Mounts: Position the new OMNI5 mounts (GP9443 for rear motor, GP9459 for upper transmission) and secure them with appropriate torque specifications as per your vehicle's service manual.
- Final Checks: Lower the engine/transmission slowly, ensuring all bolts are tightened to specification. Check for proper alignment and clearance.
Refer to your vehicle's specific service manual for detailed, step-by-step instructions and torque specifications.
5. Operating Function
Engine and transmission mounts play a critical role in vehicle operation by:
- Supporting Weight: Bearing the weight of the engine and transmission.
- Dampening Vibrations: Absorbing vibrations generated by the engine and transmission, preventing them from transferring to the vehicle's chassis and cabin.
- Limiting Movement: Restricting excessive movement of the powertrain during acceleration, braking, and cornering, which helps maintain proper alignment of drivetrain components.
Properly functioning mounts contribute to a smoother ride, reduced noise, and extended life for other drivetrain components.
6. Maintenance
Engine and transmission mounts are wear-and-tear items. Regular inspection can help identify issues before they become severe.
Inspection Guidelines:
- Visual Check: Periodically inspect the mounts for visible cracks, tears, or deterioration in the rubber components. Look for signs of fluid leakage if your mounts are hydraulic.
- Excessive Movement: With the vehicle safely supported, check for excessive engine or transmission movement when gently rocking the powertrain.
- Noise and Vibration: Pay attention to increased vibrations felt in the steering wheel, floor, or seats, or new clunking/thumping noises, especially during acceleration or shifting.
If any signs of wear or damage are observed, consider replacing the mounts to maintain vehicle performance and comfort.
7. Troubleshooting Common Issues
Issues with engine or transmission mounts typically manifest as:
- Increased Vibrations: Vibrations felt throughout the vehicle, especially at idle or under acceleration.
- Clunking or Thumping Noises: Sounds originating from the engine bay, particularly when shifting gears, accelerating, or going over bumps.
- Engine/Transmission Movement: Visible or felt excessive movement of the engine or transmission.
- Misalignment: In severe cases, worn mounts can lead to misalignment of drivetrain components.
If you experience these symptoms, it is advisable to have your vehicle inspected by a professional mechanic to diagnose the issue and determine if mount replacement is necessary.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | OMNI5 |
| Model Number (Set) | MK1580-02 |
| Rear Motor Mount Part No. | GP9443 / A4570 / 9443 |
| Upper Transmission Mount Part No. | GP9459 / A4561 / 9459 |
| Material | Alloy Steel |
| Compatible Vehicles | 2008-2012 Honda Accord 2.4L AT, 2009-2013 Acura TSX 2.4L AT |
| UPC | 680243726815 |
9. Warranty and Support
OMNI5 provides a Five-Year Warranty for this product, offering a one-time replacement for parts under warranty terms.
For further assistance or to explore other OMNI5 products, please visit the official OMNI5 store: