Dorman 090-178CD Transmission Drain Plug

Transmission Drain Plug for Honda and Acura

This Dorman transmission drain plug is built to match the original plug’s dimensions and function for specified Honda and Acura applications. The metal construction, fine thread design, and included gasket help support a secure transmission service seal on vehicles such as the Honda Accord, Civic, CR-V, and Acura MDX.

Part number 090-178CD is a direct-fit style replacement for select Honda and Acura models, including applications that call for a square-drive drain plug with an 18 mm thread diameter and 9.5 wrench size.

Key Features

• Metal construction for dependable service use
• Specific-fit design for select Honda and Acura transmissions
• Fine thread pattern with 18 mm thread diameter
• Square head drive for service access
• Includes gasket/seal for transmission drain service
• Gold finish
• Standard bolt grade

Detailed Product Description

Dorman 090-178CD is engineered as a transmission drain plug replacement for a wide range of Honda and Acura vehicles. It is designed to match the original plug’s dimensions and function, helping maintain proper sealing during transmission fluid service. The metal body, fine threads, and included gasket make it a practical choice for routine maintenance on models such as the Honda Accord, Civic, Odyssey, Pilot, and Acura TLX, MDX, and TSX.

This part cross-references Honda/Acura OE number 90081PX4003 for the same application. If you are searching for a Honda Accord transmission drain plug, Acura MDX drain plug, or Honda Civic transmission drain plug, part number 090-178CD is built for those specific service needs.

Common Problems This Part Can Address

• Stripped or worn drain plug threads
• Transmission fluid seepage at the drain point
• Damaged sealing surface from repeated service
• Corrosion or wear on the original plug
• Difficulty reusing an old drain plug after fluid changes

Installation Notes and Tips

• Verify vehicle fitment by year, make, and model before installation.
• Inspect the transmission pan or case threads for damage before installing the new plug.
• Replace the sealing gasket during service to help maintain a proper seal.
• Use the correct square-drive tool and tighten to the vehicle manufacturer’s specification.
• Clean the drain area before refilling transmission fluid.

Quality Assurance

Dorman designs this transmission drain plug to match original dimensions and function for specified applications. It is made from quality materials for reliable performance and durability in regular transmission service.

Compatible With 1990-2019 Honda Accord, 1993-2019 Honda Civic, 1997-2019 Honda CR-V, 1995-2019 Honda Odyssey, 2001-2019 Acura MDX, and other select Honda and Acura models listed in fitment.