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Diode Dynamics

Diode Dynamics 921 XPR LED Bulb - Cool - White (Pair)

SKU: DIODD0394P
$120.99
  • Make: Universal

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This purchase enters you to win the FSD26 truck: a 2024 F-350 Limited + $20,000 cash. Ends October 18. See the truck

Features Direct replacement for factory incandescent 921-size bulb. 16 high-power LEDs arranged on all four sides. Fully metal heatsinking for maximum output. Inductive constant-current drive circuit. Increased output with LED Appearance. Plug and play, simple installation. 720 lumens per bulb. Overview Upgrade. Add more light output and a modern appearance to your vehicle with the 921 XPR bulb. Each of the four sides of this bulb is populated with 4 high power LED chips for maximum brightness. Housed in an aluminum casing with a textured finish for superior heatsinking properties, the XPR will last for years to come. Best of all, installation only takes minutes - simply take out your factory bulb and the XPR will fit snugly in the socket. Brightness. At 720 lumens, the XPR will provide significantly more light output than your factory bulb. 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. Reliability. This bulb is built with constant-current circuitry, along with transient suppression. That means this bulb will last for years, not months, with no flickering or failure. And like every Diode Dynamics product, it's backed by an industry-leading three-year replacement warranty. Experience. After over a decade in business, Diode Dynamics is the most trusted name in automotive LED lighting. We assemble and engineer products ourselves in the United States, for high quality and fast time-to-market of the newest and brightest LED technologies. We pride ourselves in offering only quality LED products that will exceed your expectations. Please contact us if you'd like to discuss your lighting project!

Installation Instructions
  • Sixteen high-power LEDs arranged on all four sides.
  • Molded construction with sturdy double terminals
  • Direct replacement for your factory bulb
  • Plug and play no modification needed.
  • Increased output with LED appearance.
  • Increased output with LED Appearance
  • Plug and play simple installation

This Part Fits:

Year Make Model Submodel
2013-2022 Acura ILX Base
2013-2014 Acura ILX Hybrid
2001-2013 Acura MDX Base
2001-2006 Acura MDX Touring
2013-2018 Acura RDX Base
2014-2019 Acura RLX Base
2014,2016-2019 Acura RLX Sport Hybrid SH-AWD
2005-2006 Acura RSX Base
2005-2006 Acura RSX Type-S
1999-2014 Acura TL Base
2009-2014 Acura TL SH-AWD
2002-2003,2007-2008 Acura TL Type-S
2006-2013 Audi A3 Base
2010-2013 Audi A3 TDI
2009-2014 Audi A4 Base
2009 Audi A4 Cabriolet
2015-2016 Audi A4 Premium
2015-2016 Audi A4 Premium Plus
2015 Audi A4 Prestige
2010-2014 Audi A5 Cabriolet
2006-2011 Audi A6 Base
2012-2015 Audi A6 Premium
2012-2015 Audi A6 Premium Plus
2013-2016 Audi allroad Premium
2013-2016 Audi allroad Premium Plus
2013-2015 Audi allroad Prestige
2017-2018 Audi Q3 Premium
2015-2018 Audi Q3 Premium Plus
2015-2017 Audi Q3 Prestige
2013-2016 Audi Q5 Hybrid Prestige
2009-2019 Audi Q5 Premium
2009-2019 Audi Q5 Premium Plus
2009-2019 Audi Q5 Prestige
2014-2016 Audi Q5 TDI Premium Plus
2016 Audi Q5 TDI Premium Plus S-Line
2014-2016 Audi Q5 TDI Prestige
2016 Audi Q5 TDI Prestige S-Line
2007-2010 Audi Q7 Base
2007-2015 Audi Q7 Premium
2011-2015 Audi Q7 Premium Plus
2010-2015 Audi Q7 Prestige
2009-2010 Audi Q7 TDI
2011-2015 Audi Q7 TDI Premium
2011-2015 Audi Q7 TDI Premium Plus
2011-2015 Audi Q7 TDI Prestige
2013-2015 Audi RS5 Base
2014-2015 Audi RS5 Cabriolet
2010-2013 Audi S4 Base
2009 Audi S4 Cabriolet
2014-2016 Audi S4 Premium Plus
2014-2016 Audi S4 Prestige
2008-2013,2017 Audi S5 Base
2010-2013 Audi S5 Cabriolet
2014-2016,2018 Audi S5 Premium Plus
2014-2016,2018 Audi S5 Prestige
2007-2011,2013-2015 Audi S6 Base
2007-2008 Audi S8 Base
2019 Audi SQ5 Premium
2014-2019 Audi SQ5 Premium Plus
2014-2019 Audi SQ5 Prestige
2008-2009 Audi TT Base
2016-2019 Buick Cascada Base
2016-2019 Buick Cascada Premium
2017-2019 Buick Cascada Sport Touring
2018-2024 Buick Enclave Avenir
2012-2013,2018 Buick Enclave Base
2014-2017 Buick Enclave Convenience
2008-2011 Buick Enclave CX
2008-2011 Buick Enclave CXL
2018-2024 Buick Enclave Essence
2014-2017 Buick Enclave Leather
2019-2021 Buick Enclave Preferred
2014-2024 Buick Enclave Premium
2013-2021 Buick Encore Base
2013-2016 Buick Encore Convenience
2017-2020 Buick Encore Essence
2013-2016 Buick Encore Leather
2017-2021 Buick Encore Preferred
2017-2018 Buick Encore Preferred II
2013-2018 Buick Encore Premium
2016-2020 Buick Encore Sport Touring
2017-2020 Buick Envision Base
2017-2020 Buick Envision Essence
2017-2020 Buick Envision Preferred
2016-2020 Buick Envision Premium
2019-2020 Buick Envision Premium II
2018 Buick LaCrosse Avenir
2012-2018 Buick LaCrosse Base
2012 Buick LaCrosse Convenience
2005-2011 Buick LaCrosse CX
2005-2011 Buick LaCrosse CXL
2005-2008,2010-2011 Buick LaCrosse CXS
2017-2018 Buick LaCrosse Essence
2012-2016 Buick LaCrosse Leather
2017-2018 Buick LaCrosse Preferred
2012-2018 Buick LaCrosse Premium
2016 Buick LaCrosse Sport Touring
2008-2009 Buick LaCrosse Super
2012-2013 Buick LaCrosse Touring
2006-2011 Buick Lucerne CX
2006-2011 Buick Lucerne CXL
2010 Buick Lucerne CXL Special Edition
2006-2008 Buick Lucerne CXS
2008-2011 Buick Lucerne Super
2014-2017 Buick Regal Base
2014-2017 Buick Regal GS
2014-2017 Buick Regal Premium
2016-2017 Buick Regal Sport Touring
2019-2020 Buick Regal Sportback Avenir
2018-2020 Buick Regal Sportback Base
2018-2020 Buick Regal Sportback Essence
2018-2020 Buick Regal Sportback GS
2018-2020 Buick Regal Sportback Preferred
2018-2019 Buick Regal Sportback Preferred II
2018-2020 Buick Regal TourX Base
2018-2020 Buick Regal TourX Essence
2018-2020 Buick Regal TourX Preferred
2012-2017 Buick Verano Base
2012-2016 Buick Verano Convenience
2012-2017 Buick Verano Leather
2013-2016 Buick Verano Premium
2016-2017 Buick Verano Sport Touring
2013 Buick Verano Turbo
2016-2018 Cadillac CT6 Base
2016-2020 Cadillac CT6 Luxury
2016-2020 Cadillac CT6 Platinum
2017-2018 Cadillac CT6 Plug-In
2016-2020 Cadillac CT6 Premium Luxury
2019 Cadillac CT6 Sport
2019-2020 Cadillac CT6 V
2014-2019 Cadillac CTS Base
2014-2019 Cadillac CTS Luxury
2014-2016 Cadillac CTS Performance
2014-2016 Cadillac CTS Premium
2017-2019 Cadillac CTS Premium Luxury
2014-2019 Cadillac CTS V
2014-2019 Cadillac CTS Vsport
2014-2016 Cadillac CTS Vsport Premium
2017-2019 Cadillac CTS Vsport Premium Luxury
2014-2016 Cadillac ELR Base
2019-2020 Cadillac XT4 Luxury
2019-2020 Cadillac XT4 Premium Luxury
2019-2020 Cadillac XT4 Sport
2017-2019 Cadillac XT5 Base
2017-2019 Cadillac XT5 Luxury
2017-2019 Cadillac XT5 Platinum
2017-2019 Cadillac XT5 Premium Luxury
2013-2019 Cadillac XTS Base
2013-2019 Cadillac XTS Livery
2013-2019 Cadillac XTS Luxury
2013-2019 Cadillac XTS Platinum
2013-2016 Cadillac XTS Premium
2017-2019 Cadillac XTS Premium Luxury
2014-2019 Cadillac XTS Vsport Platinum
2014-2016 Cadillac XTS Vsport Premium
2017 Cadillac XTS Vsport Premium Luxury
2013 Chevrolet Avalanche Black Diamond LS
2013 Chevrolet Avalanche Black Diamond LT
2013 Chevrolet Avalanche Black Diamond LTZ
2007-2012 Chevrolet Avalanche LS
2007-2012 Chevrolet Avalanche LT
2007-2012 Chevrolet Avalanche LTZ
2019 Chevrolet Blazer Base
2019 Chevrolet Blazer L
2019 Chevrolet Blazer Premier
2019 Chevrolet Blazer RS
2017-2021 Chevrolet Bolt EV LT
2017-2021 Chevrolet Bolt EV Premier
2014-2015 Chevrolet Camaro LS
2014-2015 Chevrolet Camaro LT
2014-2015 Chevrolet Camaro SS
2014-2015 Chevrolet Camaro Z/28
2014-2015 Chevrolet Camaro ZL1
2013-2017 Chevrolet Caprice PPV
2013-2015 Chevrolet Captiva Sport LS
2013-2015 Chevrolet Captiva Sport LT
2013-2015 Chevrolet Captiva Sport LTZ
2015-2018 Chevrolet City Express LS
2015-2018 Chevrolet City Express LT
2005,2010 Chevrolet Cobalt Base
2005-2010 Chevrolet Cobalt LS
2005-2010 Chevrolet Cobalt LT
2006-2007 Chevrolet Cobalt LTZ
2008 Chevrolet Cobalt Sport
2005-2010 Chevrolet Cobalt SS
2004,2015-2020 Chevrolet Colorado Base
2004,2006-2008 Chevrolet Colorado LS
2006-2012,2015-2026 Chevrolet Colorado LT
2004-2005 Chevrolet Colorado Sport
2004-2005 Chevrolet Colorado Sport LS
2023-2026 Chevrolet Colorado Trail Boss
2006-2012,2015-2026 Chevrolet Colorado WT
2004-2005,2015-2026 Chevrolet Colorado Z71
2004-2005 Chevrolet Colorado Z71 LS
2004-2005 Chevrolet Colorado Z85
2004-2005 Chevrolet Colorado Z85 LS
2017-2026 Chevrolet Colorado ZR2
2014-2015,2017-2019 Chevrolet Cruze Diesel
2011-2015 Chevrolet Cruze Eco
2015-2019 Chevrolet Cruze L

Customer Reviews

Overall rating: 4.7 / 5 from 543 reviews.

Customer photo review of FSD 1998.5- Present 24V Cummins Clamp Lock Head Stud Kit

First off super happy with the product from quality to fit. This was my first install and it was quite easy all the necessary hardware was there. I was looking for mid price head studs and I’ll say I love them I have a 100% and a s480 I’ve had no problems with it and I beat on it every day. 10/10 recommend.

Jacob O. 5/5 Verified

FSD 1998.5- Present 24V Cummins Clamp Lock Head Stud Kit

Customer photo review of FSD 03-09 Dodge Cummins Billet Heat Exchanger

The billet heat exchanger looks great and is machined nicely. No worries about an internal failure allowing fluids to mix. It seems to be doing its job. It's more robust than the factory style cooler but I don’t believe it is quite as efficient based on warm up times I’m seeing. My only gripe is the bracket mounting bolts, they thread directly onto the cooler instead of passing all the way through and securing with nuts. Make sure to use thread locker along with the lock washers. As a rough guide, torque for M8 fasteners in aluminum should be 11-15 ft lbs, no torque spec is listed for the mounting hardware in the instructions.

Charles H. 4/5 Verified

FSD 03-09 Dodge Cummins Billet Heat Exchanger

Customer photo review of FSD 2003-2007 Dodge Cummins Heater Hose Kit Black Braided

It’s not bad, I was in a bind and needed a quick fix to get my truck back going. So first things first, the kit works. You can get rid of the steel lines and these will take their place. With about an hour and a half and a little research it doesn’t take much to get these hoses installed. However, I have some gripes about this kit. 1. You have to be very careful about how the lines are run to prevent the hose from kinking. 2. There are no p clamps or hardware included to hold the lines in place. To improve this kit, I’d toss some hose clamps, a couple bolts with some p clamps to hold the hose, maybe a couple pictures on where to run things too, or even total install instructions. Stiffer hose would be good too, in my pictures you can see that the hose going to the front of the engine is trying to kink as it makes the bend to run beside the turbo.

Noah T. 3/5 Verified

FSD 2003-2007 Dodge Cummins Heater Hose Kit Black Braided

Customer photo review of Kingspeed Billet Front Cover 94-02

It came with no gaskets this item deff needs to be sold with cover gasket as well as the seal for the crank even a plug for the vent or a fitting to hook a tube to the vent. Didn’t come with shit but bolts. Now I got to track everything else down seperatly makes it a pain in the ass. At this point I’d rather have stayed stock

Jacob M. 3/5 Verified

Kingspeed Billet Front Cover 94-02

Customer photo review of FSD 2010-2012 Dodge Cummins Factory Replacement Transmission Line Kit Black Braided

I installed them when I built my transmission. Hoses are good quality but fittings felt kind of cheap. Not a bad kit at all. I’d recommend it to anyone. Substantial trans temp difference after putting them on. My trans runs a lot cooler now that I’ve bypassed the heat exchanger. 2012 ram 2500 with 68rfe. 9/10 would recommend. Just be gentle with the fittings

Max F. 4/5 Verified

FSD 2010-2012 Dodge Cummins Factory Replacement Transmission Line Kit Black Braided

Customer photo review of FSD 03-09 Dodge Cummins Elite Drop-In Transmission Cooler Kit

I installed this cooler and a few weeks later got into a wreck that was able to damn near total my truck, the frame is bent in 4 places and it shifted my ranch and bumper a foot. This cooler was the only radiator that survived everything else was destroyed and wrapped around the cooler. I called customer support and was able to order new stainless steel brackets and this cooler will live again. I’m very impressed with the quality and strength of this part and would gladly buy it for another truck.

Fritz G. 5/5

FSD 03-09 Dodge Cummins Elite Drop-In Transmission Cooler Kit

Customer photo review of Kingspeed 06-Current Dodge Ram Billet Budget Builder Valve Cover

I love the product. I am just upset that it wasn’t clear it doesn’t come with any hardware. I currently have no clue what barb fittings and hose sizes I need to get for the valve cover to my catch can. I am currently using a hardware store setup as this is my first Cummins and my first quality build of a truck. If there’s anyway you could assist me or point me in the right direction that would be awesome. Aside from that I’ve had nothing but compliments on it, I actually won top 10 truck and SCT x GFP in Nashville a few weeks back. Everyone including myself love the valve cover.

Caleb H. 3/5 Verified

Kingspeed 06-Current Dodge Ram Billet Budget Builder Valve Cover

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