OXILAM 7440 LED Turn Signal Bulbs Amber 4000LM T20 7441 CANBUS Built-in Resistor (2-Pack)

OXILAM 7440 amber LED bulbs are high-output, CANBUS-compatible replacements for T20/7440 turn-signal sockets, delivering 4000 lumens per bulb and a long-life aluminum design.

These OXILAM 7440 (also labeled 7440NA/7441/T20/W21W/WY21W/992) LED bulbs are engineered to upgrade standard halogen turn signals to a brighter amber output while minimizing electrical errors on modern vehicles. Each bulb uses 26 3020 SMD LEDs with a warm 2200K amber tint and an integrated load-resistor-style CANBUS driver to reduce false error messages and hyper-flash in most vehicle computers. The aluminum housing and thermal design improve heat management for extended service life.

How much brighter are these bulbs compared with stock halogens?

Each OXILAM 7440 bulb produces about 4000 lumens and is rated at roughly six times the brightness of a typical halogen turn signal bulb. That boost enhances visibility to other drivers and makes your vehicle's indicators more noticeable in daylight and low-light conditions.

• 26 × 3020 SMD LED chips per bulb for concentrated output
• Listed brightness: approximately 4000LM per bulb
• Power draw: 21W per bulb, efficient compared with equivalent incandescent wattage

Will these bulbs trigger dashboard errors or hyper-flash?

OXILAM integrates a built-in CANBUS driver to reduce error warnings and hyper-flashing on many modern vehicle systems. The design is compatible with most CK/SRCK and standard sockets, but some sensitive makes and certain models may still require additional load resistors for full compatibility.

• Designed to work with 95% of vehicle computer systems
• For sensitive brands (e.g., Jeep, Chrysler, Chevrolet, GMC, Dodge, Ram, Volkswagen), additional external resistors might be needed
• Manufacturer offers free external load resistors upon request if compatibility issues occur

How does the bulb manage heat and longevity?

The bulb body is machined from aircraft-grade aluminum and shaped to increase surface area for faster heat dissipation. Combined with a wide-voltage constant-current driver, this thermal approach supports longer life and stable light output over time.

• Aircraft-grade aluminum housing for efficient thermal transfer
• Unique textured housing increases dissipation surface area
• Estimated lifespan up to 60,000 hours under normal operating conditions

Which sockets and applications are these bulbs compatible with?

These LED lamps are intended specifically for turn-signal circuits and are direct-fit replacements for several T20-style part numbers. They are single-function bulbs and should not be used where DRL or parking light dual-functionality is required.

• Direct replacements for: 7440, 7440NA, 7441, T20, W21W, WY21W, 992
• Voltage range: DC 12–24V, suitable for most passenger cars and light trucks
• Always confirm fitment using your vehicle's owner manual or the vehicle fitment guidance before purchase

Who is this for: Drivers who want a dramatic visibility upgrade to their vehicle's turn signals without extensive wiring changes. These bulbs suit owners seeking a bright amber output, durable materials, and broad CANBUS compatibility for modern cars and trucks. If your vehicle is known for sensitive warning systems, be prepared to request the optional external load resistors for flawless integration. Remember that these are single-purpose turn-signal bulbs and are not intended to replace dual-function lamps used for DRLs or parking lights.