Skip to product information
1 of 10

Diode Dynamics 921 LED Bulb HP36 LED - Cool - White (Single)

Diode Dynamics 921 LED Bulb HP36 LED - Cool - White (Single)

Regular price $29.95
Sale price $29.95 Regular price
Discounts and shipping calculated at checkout.
  • 60 Day No Hassle Returns
  • Fast & Free Shipping
  • Always In Stock Guarantee
Payment methods
  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • USDC
  • Visa
FeaturesCompatible with Subaru Outback trunk light bulbs.Modern cool white appearance or choose your color.Plug and play no modification with factory 194 bulb size.Available in multiple brightness levels.OverviewModern Style. Replacement LED bulbs are a great way to improve the look and function of your trunk light. Compared to the original incandescent bulbs they will provide a modern premium appearance and more light output when loading and unloading your vehicle. The installation is straightforward with just a bulb swap - making this a great simple upgrade for your vehicle.Brightness. All Diode Dynamics LED lighting is rated with accurate measured lumen figures not calculations or guesses. We test the true output in-house and provide you the real numbers to compare.Color Options. In addition to vibrant colors of blue red amber and green our trunk light bulbs are available in a number of white color options. These include a cool white 6000K warm white 3000K a 5000K or pure white and a 4000K or natural white. Whether you want a modern cool white appearance or a traditional warm white color with more output we have the color to fit your need!Colors that match. Most of us have seen lighting setups with random shades of white that don't quite match. At Diode Dynamics we operate an integrating sphere which is a piece of lab equipment used to analyze the exact color spectrum of the LED bulbs we produce. By testing each batch of products we can ensure that all bulbs will match in color to avoid various tints of white. These bulbs will match any other upgrades you may have from Diode Dynamics for factory-style uniformity and a clean appearance.
Installation Instructions

DIODD0143S

Shop Safely With Us

Question about this product?

We're happy to help. Send us a message or use our live chat.

Shipping Information

  • Orders are prepared for shipment the same day if received prior to 2 PM EST on business days. Orders received after 2 PM EST will be fulfilled the next business day.
  • Shipping rates are automatically calculated at checkout based on weight, size, location, and carrier availability.
  • We offer free economy ground shipping for the contiguous USA. Expedited shipping options through trusted carriers such as UPS and FedEx are also offered at checkout.
  • High-value orders may require a signature upon delivery. You’ll be notified before shipment if this applies.

Returns, Exchanges and Refunds

  • You have 60 days after delivery to request a return or exchange. Items must be new, uninstalled and in resalable condition.
  • If the return is due to our error, we'll provide a prepaid return label at no cost to you.
  • If the return is due to customer error, you'll be responsible for return shipping costs and a 15% restocking fee may apply.
  • Inspect your package when it arrives and report any shipping damage or missing items within 24 hours of delivery.

Product Warranty

  • If your product issue occurs within 60 days of delivery, and the item is new and uninstalled, start a return through our Return, Exchange and Refund Policy.
  • If your issue occurs after 60 days and the product is covered by a manufacturer warranty, contact the manufacturer directly.
  • If you need assistance, reach out to us, we will guide you through the process.

Payment Information

  • Your payment method is charged when your order is placed. 
  • You may cancel and refund your order at any time by Contacting Us before it ships.
  • If your payment method is declined, your order will not be processed. Please double check your billing details to avoid delays.
  • Refunds are typically processed within 5-7 business days and may take up to 10 business days depending on your financial institution.
  • Some promotional items may not qualify for Buy Now, Pay Later payment options.

EPA, CARB and Disclaimers

  • Certain products are intended for off-road or race use only and may not be legal on public roads.
  • Buyers are responsible for ensuring compliance with all local, state, and federal laws.
  • Products that affect emissions may not be legal in California unless specifically labeled as CARB-exempt.

Items Ineligible for Return

Due to the nature of automotive parts, some items cannot be returned. These include:

  • Custom or special-order products
  • Products marked as "non-returnable" prior to purchase
  • Electronic components (e.g., ECUs, tuners, programmers, controllers, modules, etc)
  • Software
  • Installed or used parts
  • Final sale or clearance items
  • Hazardous materials (e.g., flammable liquids or gases)
  • Coilovers
  • Engine Internals (e.g., pistons, cams, valves, lifters, tensioners, etc) 
  • Turbochargers, Superchargers and Kits
  • Tooling

If you're unsure whether your item is eligible, please Contact Us before ordering.