Dorman 090-947 Transmission Drain Plug

Dorman 090-947 Oil Drain Plug for Mazda Applications

Dorman 090-947 is a metric steel oil drain plug made as a direct replacement for a damaged or worn original plug. It matches the thread pitch for a proper seal and uses a conventional drain method with a washer-style gasket.

Key Features

• Steel construction with a black finish
• Metric thread size: M14-1.5
• 21.3 mm round head with 6 socket points
• Washer-type gasket included
• Non-magnetic design
• Direct replacement for OE-style service on Mazda oil drain applications

Detailed Description

This Dorman 090-947 oil drain plug is built for service replacement where the original plug is stripped, worn, or no longer sealing correctly. The metric M14-1.5 thread size and matched pitch help maintain a secure fit in the oil pan, while the steel body and washer seal support routine oil service. It is listed for Mazda 3, Mazda 3 Sport, Mazda 6, Mazda CX-5, Mazda CX-7, Mazda CX-9, Mazda MX-5, Mazda MX-5 Miata, Mazda 2, Mazda 5, and RX-8 applications across the model years shown in the fitment data. This part cross-references FS5021249 for the same application.

What It Helps Fix

• Stripped or rounded drain plug threads
• Oil seepage at the drain plug sealing surface
• Damaged or worn original drain plug hardware
• Improper fit from incorrect thread pitch or thread size
• Recurring service issues during oil changes on Mazda 3, Mazda CX-5, and Mazda 6 models

Installation Notes and Tips

Verify the oil pan thread size before installation and confirm the plug seats cleanly by hand before tightening. Use the correct socket size for the 21.3 mm round head and replace the washer seal during service if needed. This plug does not require a special tool.

Quality Assurance

Dorman’s Oil-Tite program focuses on replacement drain plug hardware with OE-style thread matching for a reliable seal. Part number 090-947 is engineered as a direct replacement for the listed Mazda applications.