Suzuki Motorcycle LT-4WD QuadRunner 250 Tail Light Bulb Size

Additional Notes

• The Suzuki Motorcycle LT-4WD QuadRunner 250 uses the 12821 bulb size for its tail light across the 1987-1998 model years.
• The 12821 is a Philips part number designating a miniature wedge bulb in the T10 form factor, which refers to a tubular bulb approximately 10mm wide at its widest point.
• The bulb operates on a 12-volt electrical system and draws 5 watts, placing it in the low-wattage range typical of indicator and tail light applications.
• The W2.1x9.5d base type is a wedge-style base where the glass envelope itself acts as the retention mechanism, requiring no separate metal shell or bayonet pins for fitment.
• The T10 wedge format is widely used across many vehicle manufacturers, though fitment compatibility depends on the specific socket housing and not solely on the bulb form factor.
• Because the same 12821 specification applies uniformly across all twelve listed model years, no year-specific substitution or variation is indicated within this application.