🚀 Just Launched - FASS Drop-In Series Diesel Fuel System - 2025-2027 RAM 6.7L Cummins

🚀 Just Launched - FASS Fabrication Upper Coolant Tube - 2013-2018 6.7L Cummins

Monitor your FASS Fuel Filter Life with FASS Connect!
1 4
Diode Dynamics  |  SKU: DIODD0143Q

Diode Dynamics 921 LED Bulb HP36 LED - Cool - White Set of 4

USD 11998

Can I pick up my order or have it installed at your shop?

Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.

How do I know if this part fits my vehicle?

Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.

What if I need to return a product or it’s defective?

Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)

What's the lead time on custom or fabricated parts?

Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.

FeaturesBrighter cool white LED outputDirect replacement compatible with Ford Mustang GT reverse light bulbPlug and play no modification with factory 921 bulb sizeImproved visibility behind vehicleAvailable in multiple brightness levelsOverviewBrighter Backup. These replacement LED bulbs are a great way to improve the look and function of the reverse lights on your vehicle. You will get higher visibility at night with a modern look. The installation is straightforward with just a bulb swap - making this one of the easiest ways to improve your vehicle’s lighting.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.Colors that match. At Diode Dynamics we test each batch of products to ensure that all bulbs will match in color and 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.Reliability. Diode Dynamics LEDs are built with constant-current inductive circuitry along with transient suppression. While more expensive than simple bulbs this allows Diode Dynamics LEDs to last for years with no flickering or failure.Experience. After over a decade in business Diode Dynamics is one of the most trusted names in automotive LED lighting. We directly assemble and engineer our own products in the United States allowing for higher quality and performance with the newest and brightest LED technology. We pride ourselves in offering only the best possible LED solutions.

This Part Fits:

Year Make Model Submodel
2010-2012 Ford Mustang Base
2012 Ford Mustang Boss 302
2010-2012 Ford Mustang GT
2010-2012 Ford Mustang Shelby GT500
2006-2014 Honda Ridgeline RT
2006-2014 Honda Ridgeline RTL
2006-2014 Honda Ridgeline RTS
2007-2008 Honda Ridgeline RTX
2014 Honda Ridgeline SE
2012-2014 Honda Ridgeline Sport

Customers are saying

4.69 ★ (160)
Verified

Also in:

© 2026 FASS Motorsports. All Rights Reserved.