Review on 🚦 AUXITO LED Turn Signal Light Bulbs: Amber Yellow 3157 LEDs for Blinker, Parking, Side Marker Lights (Pack of 2) by Chris Santos

Amazon's workshop setup will not be specific enough. My suburb 2103 had a combination of 3157 and 7440. The 7440 model is for reverse lights. 3157 suitable for brake and indicator fittings. The 7440 paired well with my reversing lights, and thanks to its pear-like shape and size, the beam pattern was closer to standard halogen, but with increased brightness. The standard 7440 halogen lamp does not have a plastic base. The base is a glass wedge. If you try to plug a 3157 into a 7440 slot, the base will plug in and it may burn for a short time, but the bulb will not seat and will shake. Some of the negative comments and reviews on this product are almost certainly related to this bug. The 3157 base is the same width but is slightly thicker front to back and snaps into the base with a click. The 7440 base has a similar click to latch but is held much less securely in the 7440 base mechanism. Hope that helps. first photo 3157 on the left, 7440 and standard halogen bulb on the right. The second photo is a standard halogen and LED 7440 on the left, 3157 on the right.