• Three Urvient T10 LED warning lights in black plastic, shown side by side with yellow, red, and amber LED arrays illuminated, on a white background.
  • A car LED light bulb product diagram on a white background, showing the bulb with dimension labels (53mm, 27mm, 42mm, 16mm), a small inset of the wedge socket, and a color applicability note with red, white, and orange circles. The bulb is black with orange LED lenses and a blue/red durvient logo.
  • A close-up promotional graphic of a T10 LED light bulb showing a built-in current rectifier. The image features a dark background with yellow and white text explaining the benefits of the built-in rectifier, such as stable voltage and protection against unstable voltage.
  • A cylindrical LED light bulb shown on a dark background with large yellow and white text reading 'SUPER BRIGHT LED BULB.' Three inset panels demonstrate the bulb glowing in white, red-orange, and bright red/yellow light.
  • An infographic-style product graphic for a high-quality LED light bulb on a dark blue background. The bulb is shown in cross-section with callout labels reading features such as 3030 3D LED, rectifier, aviation grade aluminum, light bulb plug, top of bulb, and high brightness lamp beads.
  • Promotional graphic for 44 yellow 3030 LED lamp beads, showing a single bulb, a circular cross-section view, a single bead close-up, and text highlighting high brightness and low light decay.
  • Three-panel collage showing a car light product in use: a bright amber headlight or marker light on the front, a white car at night with the rear lights turned on illuminating a sandy path, and a dark vehicle with red taillights on a night road.
  • Two automotive LED light bulbs with red square-shaped LEDs on a black housing, shown on a plain white background. One bulb is upright and the other is angled beside it.
  • Two automotive LED turn signal bulbs with orange LED chips on a clean white background. One bulb is upright showing the front with the 'durvient' brand logo, and the other is angled to show the side with more visible LED segments.
  • Two Durvient LED car light bulbs with a black plastic base and a cylindrical body filled with bright yellow LED chips, shown on a solid white background.
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T20 7440 LED Bulbs - Canbus Error-Free Single Circuit (W21W / WY21W)

Single-Circuit Wedge LED Bulbs for Turn Indicators (Amber), Reverse (White) & Brake (Red)

4.8 20 reviews 14 sold in the last 24 hours
Rs. 1,049.00 Rs. 1,500.00

Inclusive of all taxes. Extra 2% off on UPI (Auto applied)

  • Three Urvient T10 LED warning lights in black plastic, shown side by side with yellow, red, and amber LED arrays illuminated, on a white background.
  • A car LED light bulb product diagram on a white background, showing the bulb with dimension labels (53mm, 27mm, 42mm, 16mm), a small inset of the wedge socket, and a color applicability note with red, white, and orange circles. The bulb is black with orange LED lenses and a blue/red durvient logo.
  • A close-up promotional graphic of a T10 LED light bulb showing a built-in current rectifier. The image features a dark background with yellow and white text explaining the benefits of the built-in rectifier, such as stable voltage and protection against unstable voltage.
  • A cylindrical LED light bulb shown on a dark background with large yellow and white text reading 'SUPER BRIGHT LED BULB.' Three inset panels demonstrate the bulb glowing in white, red-orange, and bright red/yellow light.
  • An infographic-style product graphic for a high-quality LED light bulb on a dark blue background. The bulb is shown in cross-section with callout labels reading features such as 3030 3D LED, rectifier, aviation grade aluminum, light bulb plug, top of bulb, and high brightness lamp beads.
  • Promotional graphic for 44 yellow 3030 LED lamp beads, showing a single bulb, a circular cross-section view, a single bead close-up, and text highlighting high brightness and low light decay.
  • Three-panel collage showing a car light product in use: a bright amber headlight or marker light on the front, a white car at night with the rear lights turned on illuminating a sandy path, and a dark vehicle with red taillights on a night road.
  • Two automotive LED light bulbs with red square-shaped LEDs on a black housing, shown on a plain white background. One bulb is upright and the other is angled beside it.
  • Two automotive LED turn signal bulbs with orange LED chips on a clean white background. One bulb is upright showing the front with the 'durvient' brand logo, and the other is angled to show the side with more visible LED segments.
  • Two Durvient LED car light bulbs with a black plastic base and a cylindrical body filled with bright yellow LED chips, shown on a solid white background.
1 10
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Product Highlights

  • Application-Specific Colors: Amber/Orange for Turn Signals, Pure White for Reverse Lights, and Red for Auxiliary Brake/Fog Lamps.
  • Canbus Anti-Hyperflash Technology: Integrated load circuit prevents rapid flashing and eliminates dashboard bulb-out warning errors.
  • High-Output 3030 SMD LED Matrix: Full 360° radial light distribution maximizes reflector housing spread with zero dead zones.
  • Standard T20 Single-Circuit Wedge: Direct plug-and-play fitment for 7440, W21W, and WY21W sockets across Japanese, American, and Indian vehicles.
  • Aviation Aluminum Thermal Shell: Engineered heat dissipation prevents thermal degradation for extended operational lifespan.

Got questions?

FREQUENTLY ASKED QUESTIONS

Quick answers to common questions about fitment, installation, and product use.

What is the difference between T20 7440 and T20 7443?
7440 (W21W / WY21W) is a single-circuit bulb designed for single-intensity functions such as turn signal indicators, reverse lights, or dedicated brake lights. 7443 (W21/5W) is a dual-circuit bulb designed for dual-intensity functions (dim for parking/tail lights, bright for brake lights). Check your vehicle's factory bulb base or owner's manual to ensure single-circuit 7440 is required.
Which color should I order for my car?
Choose Amber/Orange for turn signal indicators (behind clear lenses). Choose Pure White for reverse backup lights. Choose Red for dedicated brake lamps or rear fog lamps behind clear or red lenses.
Will this T20 LED bulb hyperflash on turn indicators?
These bulbs feature built-in Canbus load balancing IC drivers designed to maintain standard flash rates on the vast majority of vehicles. In rare instances where all 4 turn signals are swapped to LED simultaneously or on sensitive BCM networks, an auxiliary load resistor or LED flasher relay may be required.
Can I use this bulb in place of WY21W?
Yes. 7440, W21W, and WY21W all share the identical T20 single-circuit wedge base. WY21W specifies amber emission (choose Amber), while W21W specifies clear/white (choose White or Red depending on your vehicle's lens and socket function).
Is the installation plug-and-play?
Yes. The bulbs feature a non-polarity design and standard T20 wedge connector that pushes directly into the factory socket. No wiring modifications, cutting, or adapters are needed.

Product Details

Description

T20 7440 LED Bulbs - Canbus Error-Free Single Circuit (W21W / WY21W)

Modernize your vehicle's signaling and auxiliary lighting with high-performance T20 7440 (W21W / WY21W) Single-Circuit Wedge LED Bulbs. Engineered with high-intensity 3030 SMD LED chips and a precision optical projector top, these bulbs deliver vibrant 360-degree illumination that dramatically enhances road signaling visibility, reaction time, and vehicle presence.

Application by Color

  • Amber / Orange (WY21W / 7440NA): Front and rear turn signal indicators. Built-in Canbus load circuitry prevents hyperflashing and rapid blinking.
  • Pure White (W21W / 7440): Reverse backup lamps and daylight auxiliary lighting, casting crisp, wide-angle illumination for rearview camera clarity.
  • Bright Red (W21W / 7440): High-mount or bumper auxiliary brake/stop lamps and rear fog lights with instantaneous LED engagement.

Key Features

  • Anti-Hyperflash & Canbus Error-Free: Integrated intelligent constant-current IC driver and load balancing circuit prevent rapid flashing (hyperflash) on indicators and eliminate dashboard bulb-out warnings.
  • High-Luminance 3030 SMD LEDs: High-efficiency diodes arranged in a radial 360-degree array ensure maximum reflector utilization without shadows or dark spots.
  • Direct Wedge Plug-and-Play: Precision standard T20 (7440 / W21W / WY21W) single-contact wedge base snaps directly into factory sockets without wire cutting or splicing.
  • Aviation-Grade Thermal Management: CNC-machined aviation aluminum core dissipates heat rapidly to ensure sustained diode brightness and long service life.
  • Non-Polarity Installation: Reversible plug design allows effortless installation regardless of socket polarity.
In The Box
  • 2 x T20 7440 (W21W / WY21W) LED Bulbs (1 Pair in selected color)
Shipping & Returns
  • Exchange Only
Warranty
  • 6 Months

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A
Apoorv

Amazing build quality and obvious upgrade from halogen T2 side indicator bulbs in the Jimny. The brightness and response is amazing. Definitely going to upgrade Jimny tail lights next - red for brake lights, amber for turn signal and warm white T20s for reverse parking light.

Apoorv review photo Apoorv review photo
S
Suganth J.

All the products received functions as expected. Have to wait for it’s longevity

c
chetan d.

Very bright bulbs, no hyper flash
awsome customer service and very technically knowledgable team

A
AVIJIT H.

LED indicator buld for Ecosport. Perfect fit.

A
Anonymous

Great brightness and quality

A
Anonymous

Great color, brightness and quality

A
Amit C.

Awesome brightness of the indicator led.

G
Gaurav G.

Excellent, recommended for everyone

K
Krunal

I installed this light in my ertiga 2022 model this bulb has straight pin and in my car it has cross pin but somehow you can mange this don’t worry about this i am super satisfied with the product AND the main point is if you buy this product just remember you bought 21W to 28W bulb only otherwise hyper flash problem will occur i mistakenly bought 5w bulb and i have face some problem with hyper flash but if you connect all four indicators at same power +- its ok but not less than 21W or not higher than 28W this review is from my personal experience in my car front indicator has diffrent bulb type its has PY21 in rear and W21 in front I just post my front bulb type just for your concern and my back side bulb was cross pin but staright pin fits perfectly if you buy just check before you buy otherwise you wasted money

T
Tarun K.

Works like a charm, using in my Innova Crysta indicators, happy with it's performance, it's bright and vibrant. 10/10 for my side.

S
SHANTANU S.

Very bright bulb with 360 degree illumination, including from the front of the bulb.
However the bulb becomes very hot if turned on for prolonged time. Construction quality could be improved in future versions.

R
RAGHAVA S.

Awesome product.

For car enhancement. Using as reverse light in my car and the difference between halogen vs LED is phenominal. Highly recommended.

U
Utkarsh S.

Best product

s
shobhitdewan2212

Very very bright than stock halogens. Replaced all 4 indicator halogens with these led bulbs. And trust me the visibility of indicators despite of headlight turned on is bery good. Though for my car they hyperflash unless engine is turned on.onve engine is turned on they behave normally. While for long extended duration they again hyperflash but get back to normal immediately if we turn off n on the indicators. Overall a perfect buy complements the look of indicator assembly. Near finished smd leds.

s
shobhitdewan2212

Very very.Bright.. installed it in rear fog lamps and believe me the difference between halogen and this led is really noticeable.
Worth buying without second thoughts

S
SHANTANU S.

Very bright bulb with 360 degree illumination, including from the front of the bulb. Excellent color.
However the bulb becomes very hot if turned on for prolonged time. Construction quality could be improved in future versions.

J
JS

Very bright, no hyper-flashing
I ordered these for my Nexon and after installation, I'm fully satisfied. Brightness is very good, even in daylight. I'm sure my indicators will be much more visible in day now, good for safety. Also, there is no hyper-flashing or error.

Quality is very good, I feel the price is justified.

H
Hrishikesh D.

Great quality product, very bright, hyperflashing on extended durations only. Recovers fast.
The product is very good! Very bright, great for highway drives. No canbus error in regular use, but can hyperflash if used for very long durations, but recovers after resting it for a while.. but not error codes in MID of the car.
Thumbs up for VAG cars absolutely!

S
Snoop D.

Good to have
I first purchased this product for my Honda City on July 17, 2022.

r
rajivshopper

AMAZING PRODUCT!!! please believe me it's super awesome and you get more than 50% of light when u put these . Amazing in fog and rains . I have been using them for about 6 months and no issues . Thanks for the after sale support and readiness to help from Durvient. Great product !!