1. Product Overview
This left tail lamp—3716040FG—is an OE-standard rear light made just for the BESTUNE B30 sedan. It’s a key part of the car’s rear
lighting system—mounted on the left side of the back of the car—and it sends out super important driving signals: things like brake lights, turn signals, reverse lights, and position lights, all to the cars and people behind. That way, when you’re driving, reversing, or parking, everyone behind knows exactly what you’re gonna do, which keeps the road safe. As a replacement part, 3716040FG matches the BESTUNE B30’s original left tail lamp perfectly, fitting the car’s rear design and electrical system without a single mismatch.
2. Core Functions
Brake Signal: When you step on the brake pedal, the super bright brake light inside 3716040FG lights up right away. It clearly tells the car behind to slow down or stop, so you don’t get rear-ended.
Turn Signal: When you flip the left turn signal, 3716040FG flashes in a steady rhythm (it follows national traffic safety rules). This lets other cars and pedestrians know you’re turning left, no confusion.
Reverse Light & Signal: When you put the car in reverse, the reverse light in 3716040FG turns on. It lights up the area behind the car so you can see obstacles, and also warns stuff nearby that the car’s backing up.
Position Light: When you turn on the car’s position lights (like when it’s dark or cloudy), the position light in 3716040FG stays on. It marks the left rear edge of the car, so other drivers can tell how wide the car is and where it’s at.
3. Structural & Material Features
Tough Housing: The outer shell of 3716040FG is made of strong, impact-resistant PC (polycarbonate) material. It can handle small crashes, scratches, and bad weather—like heavy rain, hot temperatures, or sun damage—without cracking or fading. It’ll work steadily for a long time.
Clear Lens: The front lens of 3716040FG is high-transmittance acrylic. It spreads light really well, so none of the light gets lost when the signals are on. Even in bright sunlight, the lamp’s light is even and easy to see.
Sealed Design: There’s a good-quality rubber seal between the housing and lens of 3716040FG. It keeps water, dust, and fog from getting inside the lamp. That means no short circuits from water getting in, and no blurry light from fog inside—so the electrical parts work reliably.
OE-Matching Installation: The back of 3716040FG has a mounting bracket and electrical plug that’s a 1:1 match with the original part. You can mount it straight onto the car’s rear without changing the bracket or rewiring. The plug just clicks in, so replacing it is super easy.
4. Performance Advantages
Meets Light Standards: The brightness, color temperature, and flash speed of 3716040FG all follow international and national car lighting safety rules (like ECE or GB standards). It’s not too dim (so people can see it) and not too bright (so it doesn’t blind others).
Long-Lasting Light: The light inside 3716040FG (usually LED or halogen, same as the original) lasts a long time. LED ones can go up to 50,000 hours, and halogen ones work for ages too. You won’t have to replace the lamp often.
Fits the Car Perfectly: The shape, size, and color of 3716040FG are exactly like the BESTUNE B30’s original left tail lamp. After installing it, it blends right into the rear of the car—no gaps or mismatches. The car still looks like it did from the factory.
5. Application Scope & Installation Tips
Before installing, disconnect the car’s battery so you don’t get a short circuit while wiring.
Use professional tools to take off the original left tail lamp—usually, you just unscrew the fixing screws on the inside panel of the rear body, then unplug the electrical connector.
Line up 3716040FG’s mounting bracket with the car’s holes, screw it in, then plug the electrical connector in tightly.
After installing, test all the functions of 3716040FG—brake, turn signal, reverse, position light—to make sure they work before you drive.
![3716040FG]( "3716040FG")
OE-Standard Fit, Exclusively for BESTUNE B30This lamp’s made just for the BESTUNE B30 sedan—it matches the original part’s size, mounting spots, and electrical system perfectly, 1:1. No need to modify anything or add extra adapters; it’s a direct, hassle-free replacement for the factory left tail lamp.
All-in-One Critical Signal FunctionsIt packs four key rear light jobs into one: super bright brake lights (tell the car behind you’re stopping), steady flashing turn signals (make it clear you’re turning left), reverse lights (light up the back so you see obstacles), and position lights (mark the left rear of the car when it’s dark or cloudy). It checks all the boxes for traffic safety rules.
Durable Materials That Last
Impact-Resistant Housing: Made of tough PC (polycarbonate) material. It can take small bumps, scratches, and bad weather—like heavy rain, hot days, or sun damage—without cracking or fading.
Clear, Light-Spreading Lens: The acrylic lens spreads light evenly, no light gets wasted. Even in bright sunlight, the signals are easy to see.
Sealed Design for Reliable UseThere’s a good-quality rubber seal between the housing and lens. It keeps water, dust, and fog from getting inside the lamp—so no electrical short circuits, no blurry light. The lamp’s parts work steadily no matter the condition.
Easy Plug-and-Play InstallationThe back has a mounting bracket and electrical plug that match the original part exactly. Just line the bracket up with the car’s original holes, screw it in, and plug the connector in—no rewiring or adjusting the bracket needed. Even if you’re a DIYer (or a mechanic), you can install it fast.
Safe, Standard Light PerformanceThe brightness, color, and flash speed all follow international and national rules (like ECE or GB standards). It’s bright enough to be seen clearly, but not so bright that it blinds other drivers. The light inside (either LED or halogen, same as the original) lasts a long time—LED ones can go up to 50,000 hours—so you won’t have to replace the lamp often.
Blends Perfectly with the Car’s LookIt matches the BESTUNE B30’s rear body shape, size, and color exactly. After installing, it fits right in with the car’s original design—no gaps, no mismatches. The car still looks like it did from the factory.
Our company has been deeply engaged in the auto parts industry for over a decade. Every single item is carefully inspected, packed, and loaded into containers by our team—this is our company’s consistent requirement. If you get to know us, you’ll find that our company is a real "gem" (of a partner).
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