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Product Details
The Honda OEM Front Engine Mount Bolt is a genuine factory replacement designed to secure the front engine mount assembly on compatible Honda and Acura vehicles. This essential mounting fastener helps maintain a secure connection between the engine mount and its supporting structure, providing dependable attachment during normal engine operation.
Featuring a 12mm diameter and 35mm length, this genuine Honda flange bolt is manufactured to original equipment specifications for proper fitment, durability, and reliable performance.
Commonly used on the 2002–2006 Acura RSX with manual transmission and 2002–2005 Honda Civic Si (EP3), this factory replacement bolt is ideal for replacing damaged, corroded, stripped, or missing front engine mount hardware.
Engine mounts play an important role in supporting the engine and transmission assembly while helping control unwanted movement and vibration. The mounting hardware must remain securely fastened to maintain proper engine positioning during acceleration, braking, and everyday driving.
Whether you're replacing worn factory engine mounts, installing compatible aftermarket mounts, performing engine maintenance, or completing a K-series engine swap, this genuine Honda OEM Front Engine Mount Bolt provides factory-quality hardware for a proper installation.
Features
- Genuine Honda OEM Part: Authentic factory replacement manufactured to Honda's original equipment specifications.
- Front Engine Mount Bolt: Designed to secure the front engine mounting assembly on compatible applications.
- 12x35mm Dimensions: Features a factory-specified 12mm diameter and 35mm length.
- Flange-Head Design: Provides an integrated bearing surface for the original mounting configuration.
- Direct OEM Replacement: Replaces the original front engine mount bolt on compatible vehicles.
- Secure Engine Mounting: Helps maintain proper attachment of the engine mount assembly.
- Durable Steel Construction: Designed to withstand normal engine vibration and operating loads.
- Factory Fit and Finish: Maintains the original Honda mounting hardware configuration.
- K-Series Compatibility: Used on popular Honda and Acura K20 engine applications.
- Ideal for Engine Mount Replacement: Excellent for factory mount repairs and compatible aftermarket engine mount installations.
- K-Swap Friendly: Suitable for engine swaps using compatible factory mounting arrangements.
- Individual Replacement: Convenient for replacing damaged or missing factory hardware.
- OEM Part Number: 90168-S5A-000.
Additional Information
- Manufacturer: Honda / Acura
- Part Number: 90168-S5A-000
- OEM Description: Bolt, Flange (12x35)
- Other Names: Front Engine Mount Bolt / Engine Cradle Bolt / Motor Mount Bolt / Engine Mounting Flange Bolt
- Product Type: Engine Mounting Hardware
- Installation Location: Front Engine Mount on Applicable RSX and Civic Si Models
- Bolt Diameter: 12mm
- Bolt Length: 35mm
- Head Design: Flange
- Material: Steel
- Quantity: Sold Individually (1 Bolt)
- Required Quantity: 3 Bolts for the Applicable 2002–2006 RSX Manual Transmission / 2002–2005 Civic Si Front Engine Mount Assembly
Common Reasons for Replacement
Front engine mount bolts should be inspected whenever the engine mounting assembly is removed for maintenance or replacement.
- Damaged or stripped threads
- Rounded or damaged bolt head
- Corrosion or excessive wear
- Bent or damaged mounting bolt
- Missing factory mounting hardware
- Previous improper tightening
- Factory engine mount replacement
- Installation of compatible aftermarket engine mounts
- Engine or transmission removal
- K-Series engine swap projects
- Engine rebuilding or restoration
- Replacing damaged hardware with genuine Honda components helps restore the original mounting arrangement and ensures the engine mount assembly can be properly secured.
Installation Notes
- Proper front engine mount bolt installation is important for maintaining a secure engine mounting assembly.
- Before installation, inspect the front engine mount, mounting bracket, threaded holes, and surrounding components for damage or corrosion.
- Confirm that the replacement bolt matches the original hardware and is compatible with your specific engine mounting configuration.
- Always properly support the engine and transmission assembly before removing or loosening engine mount hardware.
- Position the engine mount and mounting bracket correctly before installing the replacement bolts.
- Carefully start each bolt by hand to prevent cross-threading.
- Always follow the factory service manual for the correct tightening sequence and torque specifications for your specific vehicle.
- Use a calibrated torque wrench and avoid overtightening, as excessive force can damage the bolt, mounting bracket, or surrounding threads.
- For aftermarket engine mounts or K-series engine swaps, confirm that the original Honda bolt dimensions are compatible with the mounting system being used.
- After installation, verify that the engine mount is properly seated and all mounting hardware is securely fastened.
Note:
- Includes one genuine Honda 12x35mm Front Engine Mount Bolt. Three bolts are required for the applicable RSX manual transmission and EP3 Civic Si front engine mount installation. Engine mounts, brackets, nuts, washers, and additional mounting hardware are sold separately unless otherwise specified.
For Honda and Acura enthusiasts replacing worn engine mounts, installing upgraded mounting components, or completing a K-series engine swap, this genuine Honda OEM Front Engine Mount Bolt provides the factory-correct dimensions and dependable construction needed for a secure installation.
| Part Number: | 90168-S5A-000 |
| Brand: | Honda |
| Location: | Front |
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
This part does not have vehicle specific fitment. Please contact us if you need assistance.
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