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A quality manager's take on sourcing H7, 9005, 9006, H13, and truck headlight bulbs. Why the lowest unit price often costs more—and what to check before you sign.
A sourcing lead compares halogen-socket bulbs (H7, 9005, 9006) against xenon HID (D2S, D3S) across fitment, output, electrical needs, landed cost, and returns — after nine years and $14,000 in documented ordering mistakes.
A purchasing admin's practical guide to sourcing H7, 9005, 9006, D2S, and xenon headlight bulbs for distributors, repair shops, and fleets—including fitment checks, rush-order math, and what to verify before buying from Bulbspan Sourcing or any supplier.
After 400+ rush orders in automotive lighting, the pattern is clear: the part was usually in stock. It was just the wrong one. Here's why 9005 vs 9006, D2S vs D3S, and stale fitment data cause most emergency reorders — and the six-line check that prevents them.