Restore secure factory transmission mounting with the Genuine Honda Transmission Mount Stud Bolt (90380-S10-000). This original equipment replacement fastener is designed for select Honda and Acura manual and automatic transmission applications, providing a dependable connection between the transmission assembly and its associated mounting components.

Manufactured to Honda's original equipment specifications, this transmission mounting stud features an M12 nominal diameter and 83.8mm nominal length, matching the factory hardware dimensions for compatible applications. Its purpose-built design helps maintain proper transmission mount attachment and secure positioning of the drivetrain.

Transmission mounting hardware plays an important role in supporting the engine and transmission assembly. During normal driving, acceleration, deceleration, and shifting, the drivetrain experiences movement and changing loads. Properly installed mounting studs help keep the transmission mount securely attached while allowing the mount itself to control drivetrain movement and vibration.

Over time, mounting studs can become damaged through corrosion, improper installation, overtightening, or repeated transmission removal. Damaged threads, stretched hardware, or missing fasteners can compromise the mounting connection and make proper installation difficult.

Whether you're replacing a transmission mount, performing a manual transmission swap, rebuilding a Honda drivetrain, or restoring an older Honda or Acura, the Genuine Honda 90380-S10-000 Transmission Mount Stud Bolt provides the correct OEM replacement hardware for compatible applications.

Features

• Genuine Honda OEM Part: Manufactured to Honda's original factory specifications for reliable fitment and performance.

• Factory Transmission Mount Stud: Designed for use in compatible manual and automatic transmission mounting assemblies.

• M12 Nominal Diameter: Features a factory-specified 12mm stud diameter.

• 83.8mm Nominal Length: Manufactured to the original Honda 83.8mm dimensional specification.

• Durable Metal Construction: Designed to withstand the mechanical loads associated with drivetrain mounting.

• Direct OEM Replacement: Replaces the original factory transmission mounting stud without modification in supported applications.

• Secure Drivetrain Mounting: Helps maintain proper attachment of the transmission mount and associated mounting hardware.

• Factory Thread Compatibility: Designed to engage the corresponding original Honda threaded mounting location.

• Ideal for Transmission Service: Useful during transmission removal, replacement, and installation.

• Manual and Automatic Applications: Listed for compatible Honda transmission mounting configurations.

• Restoration-Friendly Replacement: Helps maintain original factory mounting hardware specifications.

• Performance Build Compatibility: Suitable for engine and transmission swap projects retaining the corresponding OEM mounting arrangement.

Additional Information

• Manufacturer: Honda Motor Co., Ltd.
• Brand: Genuine Honda OEM
• Honda Part Number: 90380-S10-000
• OEM Description: Bolt, Stud (12X83.8)
• Alternative Names: Transmission Mount Stud, Transmission Mounting Stud Bolt, Manual Transmission Mount Stud, Automatic Transmission Mount Stud, Gearbox Mounting Stud
• Product Category: Engine & Transmission Mounting Hardware
• Component Type: Threaded Mounting Stud
• Nominal Diameter: 12mm (M12)
• Nominal Length: 83.8mm
• Thread Pitch: Application-specific; verify against the factory service information before selecting replacement nuts or related hardware.
• Material: Metal
• Installation Location: Transmission Mounting Assembly
• Primary Vehicle Application: 1997–2001 Honda CR-V
• Primary Engine Applications: B20B / B20Z2
• Transmission Compatibility: Select Manual and Automatic Transmissions
• Installation Type: Direct OEM Replacement
• Condition: New
• Quantity: One Transmission Mount Stud Bolt

Additional Notes: This is a mounting stud rather than a conventional bolt with an integral hex head. Installation requirements depend on the specific transmission and mounting arrangement.

Common Reasons for Replacement

• Damaged Threads: Cross-threading, overtightening, or improper removal can damage the stud's threaded surfaces.

• Corrosion: Exposure to moisture and road contaminants can cause rust or deterioration of mounting hardware.

• Missing Mounting Hardware: Studs may become lost or damaged during transmission removal or previous repairs.

• Transmission Mount Replacement: Damaged or questionable studs should be inspected when replacing transmission mounts.

• Stripped Fasteners: A stripped stud may prevent the mounting nut from achieving the correct clamping force.

• Improper Previous Installation: Incorrect fasteners or damaged mounting threads may require replacement with genuine OEM hardware.

• Transmission Rebuilds: New mounting hardware may be needed when reinstalling a rebuilt or replacement transmission.

• Engine Swap Projects: Replacement studs can help restore factory mounting arrangements when using compatible Honda transmissions.

• Drivetrain Restoration: Replacing deteriorated hardware helps maintain proper mounting integrity on older Honda vehicles.

Installation Notes

1. Verify Compatibility: Confirm that Honda part number 90380-S10-000 matches the original transmission mounting stud for your specific vehicle and transmission.

2. Prepare the Vehicle: Park on a level surface, engage the parking brake, and disconnect the negative battery terminal when required by the service procedure.

3. Support the Drivetrain: Before removing transmission mounting hardware, properly support the engine and transmission using an approved support fixture or suitable lifting equipment.

4. Locate the Mounting Stud: Identify the factory transmission mounting stud and the associated transmission mount or bracket.

5. Remove the Existing Hardware: Carefully remove the mounting nut and any surrounding components necessary to access the original stud.

6. Extract the Original Stud: Use the removal method specified in the Honda service manual. Avoid damaging the transmission housing or threaded mounting hole.

7. Inspect the Threads: Examine the threaded mounting location for corrosion, stripped threads, cracks, or other damage.

8. Clean the Mounting Area: Remove dirt, debris, and corrosion from the surrounding mounting surfaces.

9. Install the New Stud: Thread the Genuine Honda 90380-S10-000 stud into the correct mounting location using the specified installation procedure.

10. Verify Installation Depth: Ensure the stud is installed to the proper depth and orientation according to the factory service information.

11. Reinstall the Transmission Mount: Position the mount and bracket correctly, ensuring that all mounting holes align without forcing the components into position.

12. Tighten the Mounting Hardware: Use the Honda-specified tightening sequence and torque specifications for the particular vehicle and transmission.

13. Inspect Drivetrain Alignment: Confirm that the transmission mount is properly seated and that the drivetrain is correctly supported.

14. Remove Temporary Supports: Carefully remove the engine or transmission support equipment after confirming that all mounting hardware is securely installed.

15. Perform a Final Inspection: Check for abnormal drivetrain movement, vibration, or unusual noises during a controlled test drive.

Installation Recommendation: Always support the engine and transmission before removing drivetrain mounting hardware. Use the correct Honda torque specifications and avoid applying excessive force to the threaded transmission housing.

What's Included

• (1) Genuine Honda Transmission Mount Stud Bolt – Part Number 90380-S10-000

Note: Transmission mounts, mounting brackets, nuts, washers, and additional installation hardware are not included unless otherwise specified.

The Genuine Honda Transmission Mount Stud Bolt (90380-S10-000) is an essential OEM replacement fastener for maintaining secure transmission mounting on compatible Honda and Acura vehicles.

Featuring factory-specified M12 x 83.8mm dimensions, durable construction, and genuine Honda manufacturing quality, this stud provides a dependable replacement for damaged, corroded, stripped, or missing original transmission mounting hardware.

Whether you're restoring a first-generation Honda CR-V, replacing a transmission mount, performing drivetrain maintenance, or completing an engine and transmission installation, genuine Honda hardware helps maintain proper fitment and reliable drivetrain support.