Understanding Vehicle Sides: Offside (OS) vs Nearside (NS) Explained
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When purchasing used vehicle parts, especially items like wing mirrors, headlights, or rear lights, it's crucial to understand the terminology used to describe the side of the vehicle. At TDX LTD, we always aim to provide clear and accurate descriptions to help you get the right part, first time.
What Do OSF, OSR, NSF, and NSR Mean?
These abbreviations refer to the position of the part on a UK right-hand drive vehicle:
- OS – Offside (Driver’s Side) – Right
- NS – Nearside (Passenger’s Side) – Left
- F – Front
- R – Rear
So:
- OSF = Offside Front (Driver's Side, Front)
- OSR = Offside Rear (Driver's Side, Rear)
- NSF = Nearside Front (Passenger's Side, Front)
- NSR = Nearside Rear (Passenger's Side, Rear)
Visual Guide
Use the diagram below to quickly understand the layout from a top-down perspective:

Why This Matters When Buying Parts
Understanding this terminology ensures you're ordering the correct part for your car. For example, a NSF wing mirror is not interchangeable with an OSF wing mirror, even if they look similar.
At TDX LTD, we use these terms consistently across all our eBay listings and inventory to ensure accuracy and reduce confusion.
Still Unsure?
Feel free to contact us with any questions before placing an order — we're always happy to help!
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