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PSX26W LED Fog Light Bulbs & Kits

Built around the PSX26W/PY13W fog-light fitment, this range includes a compact 6000K LED replacement pair and a higher-output 40W, 6000LM-per-pair LED kit. The keyed PSX26W format is intended for compatible factory fog housings, with the two options serving different output, housing-space, and electrical requirements.

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With a 4.95 average rating across Google and Judge.me, Underground Lighting has earned the trust of drivers looking for dependable LED lighting upgrades. See why customers choose us for fitment support, quality products, fast shipping, and brighter lighting solutions for cars, trucks, and SUVs.

PSX26W LED Fog Light Bulbs for OEM Fog Lamp Housings

This Underground Lighting collection focuses exclusively on the PSX26W bulb, an OEM halogen-to-LED fog light bulb replacement used in factory fog lamp systems across Toyota, Ford, Subaru, Honda, Hyundai, and other vehicles. The PSX26W format is defined by its PG18.5d-3 plastic base with two wide horizontal locking tabs, which determine socket compatibility and prevent installation into unrelated formats such as H11 or 880/881. Because of this unique keyed base geometry, PSX26W bulbs are not interchangeable with H-series or round-base fog bulbs.

The category centers on the PSX26W LED replacement bulb, a solid-state upgrade that replaces the original 26W halogen filament bulb with LED emitters positioned to replicate the filament location (1:1 optical alignment). Maintaining this filament-equivalent geometry is critical to fog-lamp beam-pattern integrity, ensuring the wide, low beam dispersion needed for fog, rain, and snow visibility without glare or hotspotting.

This collection includes two PSX26W LED product types:

  • PSX26W / PY13W 650LM Plasma White LED Bulbs (Pair)
    Compact LED replacements producing approximately 650 lumens at 6000K white, designed for OEM reflector or projector fog housings where space is limited and thermal load must remain low.

  • PSX26W / PY13W 40W 6000LM LED Fog Light Kit (Pair)
    High-output LED fog light kit delivering up to ~6000 lumens per pair at 40W, designed for vehicles with larger fog housings and higher brightness needs.

All PSX26W LED bulbs operate on standard 12V automotive electrical systems and install via plug-and-play twist-lock insertion into the factory fog socket. Because LED bulbs draw significantly less current (~8–12W vs 26W halogen), some vehicles may detect reduced load and trigger bulb-out warnings, which CANbus-ready circuitry or external decoders can mitigate when needed.

PSX26W LED bulbs are designed for reflector or projector fog lamp housings, where the housing optics govern beam pattern and glare control. Color temperature selection influences fog performance:

  • 6000K white: modern appearance and high contrast in clear weather
  • 3000K yellow (variant type): improved penetration in fog/snow with reduced backscatter

Compared to halogen PSX26W bulbs (~4300K, ~800–1000 lumens), LED replacements provide 2–3× higher usable brightness, lower heat generation, and extended lifespan while preserving OEM fog-beam characteristics.

This PSX26W LED category supports OEM fog-bulb replacement and LED fog-light upgrades through Underground Lighting, emphasizing correct base fitment, optical alignment, and CANbus stability. Discover our reverse & brake lights, turn signal lights, and switchback turn signal lights, and confirm compatibility for your vehicle using the Bulb Finder tool.

Benefits of Choosing Underground Lighting PSX26W LED Fog Light Upgrades

  • Up to 2–3× Higher Fog Light Brightness

    Underground Lighting PSX26W LED bulbs deliver roughly 800–2000+ lumens (or up to ~6000 per pair in kits) compared to ~800–1000 lumens from halogen, improving road-edge and lane visibility in poor weather.

  • Correct Fog Beam Pattern With 1:1 Filament Position

    Underground Lighting PSX26W LED bulbs use LED emitters aligned to the original filament location to preserve wide, low fog-beam dispersion, preventing glare and maintaining housing-designed cutoff.

  • Lower Power Draw and Reduced Heat Load

    Underground Lighting PSX26W LED bulbs consume ~8–12W vs 26W halogen, reducing electrical load and minimizing heat stress on fog lamp housings and lenses.

  • Improved Contrast and Color Clarity

    Underground Lighting 6000K LED output increases contrast against road surfaces and markings compared to warmer halogen fog bulbs, enhancing perception in low-light conditions.

  • Long LED Lifespan (20,000–50,000 Hours)

    Underground Lighting PSX26W LED upgrades use solid-state LED construction that dramatically outlasts halogen filaments, reducing maintenance and the need for replacement in frequently used fog lights.

  • Direct Plug-and-Play PSX26W Fitment

    Underground Lighting PSX26W bulbs feature the PG18.5d-3 keyed base, ensuring precise insertion and locking into OEM PSX26W sockets while maintaining mechanical alignment and electrical contact.

How to Choose the Right PSX26W LED Fog Light Bulb

Choose between the two PSX26W options based on fitment, desired output, housing clearance, and vehicle electrical requirements.

  • Confirm PSX26W/PY13W fitment: Verify the bulb position by year, make, and model before ordering.
  • For a compact replacement: Choose the smaller 6000K LED pair where housing space is limited or maximum output is not required.
  • For higher output: Choose the 40W 6000LM-per-pair kit when additional brightness is the priority.
  • Check rear clearance: The 40W kit is longer than a factory halogen bulb, so check for batteries, washer pumps, covers, or braces behind the housing.
  • Match the electrical system: The compact bulb is listed for 12V–24V; the 40W kit is specified for 12V.
  • Set the bulb orientation correctly: The 40W kit has an adjustable base, so final positioning should support the fog housing's intended beam pattern.

Watch these helpful Underground Lighting videos for step-by-step guidance, product details, and real-world installation tips.

Confirm PSX26W Fitment for Your Vehicle

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PSX26W LED Fog Light FAQs

Underground Lighting's compact PSX26W/PY13W LED bulb pair is currently $59.99, while the 40W 6000LM LED fog-light kit is $140.00. Pricing and promotions may change over time.

Replacing both sides together is generally recommended when consistent color and output matter. A new LED on one side can look noticeably different from an older bulb on the other, even when both use the same socket type.

Make sure the bulb is fully locked into the socket, then check the connector, power supply, ground, fuse, and related wiring. You can also swap the left and right bulbs. This will help you see if the problem follows the bulb or remains with the vehicle circuit. 

The 40W PSX26W LED kit uses an enclosed high-speed cooling fan, so a faint operating sound can be normal. Grinding, rattling, intermittent fan operation, or a fan that stops completely should be investigated because adequate cooling is important for the LED assembly.

The compact PSX26W/PY13W LED pair is specified for fog-light and daytime-running-light applications. The 40W 6000LM kit is listed specifically as a fog-light upgrade, so match the correct product to the vehicle's intended lamp function.

Both PSX26W/PY13W LED products include a 1-year warranty against qualifying manufacturer defects. Installation damage and vehicle-specific fitment problems should be addressed separately from a product defect.

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