Suzuki Motorcycle GSX-R1000 Headlight Bulb Size

Additional Notes

• The H9 bulb is the most widely specified high beam type across the Suzuki Motorcycle GSX-R1000 lineup, covering model years 2007-2016 with the exception of 2010. It follows the ECE standard used in Europe and worldwide, carries a PGJ19-5 base, and operates at 12V with a 65W output from a single filament. The H9 also holds US approval, making it usable across multiple markets.
• The 9003 bulb is notable for being a dual-filament halogen type, operating at 12V with separate wattage ratings of 60W and 55W for its two filaments. It follows the ANSI standard and uses a P43t base. On the GSX-R1000, it served both the high beam and low beam positions simultaneously on 2001-2002 models, meaning a single bulb handled both functions in those years.
• The 9005 bulb shares the same 12V, 65W electrical rating as the H9 but uses a physically different P20d base and follows the ANSI standard rather than ECE. On the GSX-R1000, it appeared exclusively in the high beam position for 2005-2006, placing it between the earlier 9003 dual-filament era and the later H9 period.
• The low beam position on the GSX-R1000 transitioned through three distinct bulb types across the listed model years. The 9003 dual-filament bulb was used in 2001-2002, the H7 single-filament ECE bulb covered 2003-2008, and the H11 single-filament ECE bulb took over from 2009 onward through 2016.
• The H7 and H11 bulbs both operate at 12V and 55W with single filaments and share ECE certification with US approval, but they are not interchangeable. The H7 uses a PX26d base while the H11 uses a PGJ19-2 base, meaning the socket design differs between the two. On the GSX-R1000, the low beam shifted from H7 to H11 between the 2008 and 2009 model years.
• The 9003 bulb's dual-filament design means it physically integrates both high and low beam functions into one unit. By contrast, all subsequent bulb types used on the GSX-R1000 are single-filament, requiring separate bulbs for each beam function. This represents a structural difference in how the headlight assembly was engineered across different production periods.
• Base type compatibility is a critical fitment factor across these specifications. The P43t base of the 9003, the P20d base of the 9005, the PGJ19-5 base of the H9, the PX26d base of the H7, and the PGJ19-2 base of the H11 are each mechanically distinct and will not seat correctly in a socket designed for a different type.
• The high beam position on the GSX-R1000 used three different bulb types across 2001-2016: the 9003 for 2001-2004, the 9005 for 2005-2006, and the H9 for 2007-2016. Despite the 9005 and H9 sharing the same 12V, 65W rating, their base types differ, and they are not drop-in substitutes for one another.