# SEALIGHT Scoparc S1 H11/H9/H8 LED Headlight Bulbs (2-Pack) vs Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance: specs and price compared

A sourced, side-by-side comparison of the SEALIGHT Scoparc S1 H11/H9/H8 LED Headlight Bulbs (2-Pack) (SEALIGHT) and Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance (Diode Dynamics) among led headlight bulbs. SEALIGHT Scoparc S1 H11/H9/H8 LED Headlight Bulbs (2-Pack) is the cheaper of the two at $39.99.

## Side by side

| Spec | SEALIGHT Scoparc S1 H11/H9/H8 LED Headlight Bulbs (2-Pack) | Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance |
| --- | --- | --- |
| US price | $39.99 | $80 |
| Brand | SEALIGHT | Diode Dynamics |
| Lumens per set | 20000 | — |
| Color temp k | 6000 | 6000 |
| Bulb fitment | H11/H9/H8 (also sold as 9005/HB3, 9005+H11, and 9006/HB4 combos) | H9, 9005 (HB3), 9006 (HB4) only — never offered in H11 |
| Wattage (W) | 60 (per set, 30/bulb) | — |
| LED chip type | — | — |
| Beam pattern | — | Manufacturer-claimed 30-70% more light in the critical hotspot vs. halogen (ray-trace-optimized optics) |
| Cooling | Fanless — 0.5 in. aviation-aluminum heatsink | Active — Sunon bearingless microfan, direct-solder copper core board, thermally-modeled zinc casting |
| Rated lifespan hrs | 50000 | — |

## Key differences

- Bulb fitment: SEALIGHT Scoparc S1 H11/H9/H8 LED Headlight Bulbs (2-Pack) H11/H9/H8 (also sold as 9005/HB3, 9005+H11, and 9006/HB4 combos) vs Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance H9, 9005 (HB3), 9006 (HB4) only — never offered in H11
- Cooling: SEALIGHT Scoparc S1 H11/H9/H8 LED Headlight Bulbs (2-Pack) Fanless — 0.5 in. aviation-aluminum heatsink vs Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance Active — Sunon bearingless microfan, direct-solder copper core board, thermally-modeled zinc casting

## Sources

- SEALIGHT Scoparc S1 H11/H9/H8 LED Headlight Bulbs (2-Pack): https://sealight-led.com/product/sealight-s1-h11-h8-h9-white-led-headlight-bulbs-2pcs (sealight-led.com, verified 2026-08-12)
- Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance: https://www.diodedynamics.com/sl1-led-bulbs-pair.html (diodedynamics.com, verified 2026-08-12)

Canonical: https://frontdeskreview.com/gear/led-headlight-bulbs/sealight-scoparc-s1-vs-diode-dynamics-sl1/
Cite: Per The Front Desk Review, SEALIGHT Scoparc S1 H11/H9/H8 LED Headlight Bulbs (2-Pack) ($39.99) vs Diode Dynamics SL1 LED Headlight Bulbs (Pair) — Discontinued Clearance ($80) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/led-headlight-bulbs/sealight-scoparc-s1-vs-diode-dynamics-sl1/
License: CC BY 4.0.