Factory bulb sizes and relevant BulbFacts-tested replacement evidence for the 2011 Ford F 450 Series.
These products were physically tested by BulbFacts, but the tests were not performed in this exact vehicle unless a card explicitly says otherwise.
High/Low Beam Combined: 9008 / H13
High/Low Beam Combined 9008 / H13
The SilverStar Ultra sits just behind the Night Breaker 200 among normal-wattage reflector picks, but it remains a strong practical choice because it is easy to find and has a whiter beam appearance than many basic halogen bulbs.
General BulbFacts housing testA matching bulb size identifies fitment; it does not by itself prove optical compatibility or make a conversion a vehicle-specific recommendation.
Support independent testing: BulbFacts may earn a commission from qualifying purchases through these links, at no extra cost to you. Affiliate relationships do not determine test results or recommendations.
Available exterior and interior lighting data for this model year.
Fitment, factory-system research, and BulbFacts product tests remain separate evidence. A matching bulb size does not by itself make a conversion a vehicle-specific recommendation.
| Position | Bulb or system | Evidence status |
|---|---|---|
| High/Low Beam CombinedModel: Super Duty | 9008 / H13 | Likely fitment |
Fitment note: Verify the installed bulb, connector, housing, and factory system before ordering. A bulb-size match is not automatically a conversion recommendation or proof of vehicle-specific testing.
