New Lucas 18D2 distributor replacement rotor. This rotor arm is used on original Lucas 18D2 distributors as fitted to many early Triumph, BSA and Norton models (B31, 3TA, 5TA, T90, etc). May also fit other models not listed.. Replaces part number 423486. Check your parts book to ensure the best fitment.
Please note that this rotor is sold each - may come in a red or black finish depending on stock levels
**Features**
- OEM part number is 423486
- Free shipping in the USA (lower 48)