If you want a precise, vehicle-specific replacement cap designed to seal and protect the right-side nozzle on your Mercedes GL-Class, choose LIRHIQYGF Front Headlight Washer; if you need a complete left-and-right set for a BMW 3 Series that offers a primed finish ready for painting, choose Generic Headlight Washer Cover.
• LIRHIQYGF Front Headlight Washer: Offers a dedicated, single-cap solution specifically molded for the Mercedes GL-Class (W164/X164) with an exact OEM-style part number match; the trade-off is that it only replaces one side of the system. This pick is for the Mercedes owner who needs a direct swap without cutting corners.
• Generic Headlight Washer Cover: Delivers a full pair of covers for both driver and passenger sides of specific BMW models with a primed surface for customization; the trade-off is that it requires a paint job to match the final look and does not fit any other brand. This pick is for the BMW enthusiast looking to replace a broken pair and customize the color.
The LIRHIQYGF unit is engineered with a singular purpose: to serve as the right-side headlamp spray nozzle cap for the Mercedes GL-Class. If you own a W164 or X164 model from the years 2008 through 2012—specifically the 350, 420, 450, or 550 variants—this component is designed to drop directly into place where the original manufacturer part A1648850226 sat. The design focuses entirely on precision fitment for that specific geometry. It is not a universal adapter; it is a targeted repair part meant to restore the function of the washer system on that specific corner of the vehicle.
This product is ideal for the owner who has lost their original cap or found it cracked and no longer sealing properly against road debris. Because it carries the specific designation "RIGHT A1648850226," it eliminates the guesswork often associated with aftermarket parts. You do not need to measure, drill, or modify anything to make it work. The "One Size" designation here refers to the fact that there is only one correct size for this application, ensuring that the nozzle sits flush and operates correctly when the high-pressure fluid is engaged.
However, you should skip this product if you are driving a different make or model, or even if you drive a Mercedes but need the left-side cap. If your vehicle requires a pair, or if you have damage on the opposite side, this single cap will leave you halfway through your repair. It is a specialized tool for a specialized job, perfect for the person who values exact OEM specifications over generic solutions.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-11-08 · 6 min read · Independent comparison
The Generic Headlight Washer Cover takes a completely different approach by focusing on volume and versatility within the BMW ecosystem. This listing provides a set of two covers, explicitly labeled as a "2X Driver+Passenger Side Headlight Washer Cover." It is designed to fit a wide range of BMW 3 Series models, including the 328i, 328xi, 335i, and xDrive versions spanning from 2007 to 2010. The inclusion of multiple part numbers (61677171660, 13457124, 61677171659) in the description signals a broad compatibility strategy intended to cover various production runs of these vehicles.
What sets this option apart is the "Primed" finish mentioned in the product details. Unlike many pre-colored replacements, this raw primer surface allows you to paint the caps to match the exact shade of your bumper or hood before installation. For car enthusiasts who view every detail of their vehicle's exterior as a canvas, this feature adds significant value. It transforms a simple functional repair into a customization opportunity.
You should choose this product if you own a compatible BMW and prefer buying in pairs rather than singles. It is also the logical choice if you plan to paint your new parts yourself to ensure a seamless factory look. However, if you are looking for a quick, plug-and-play solution that comes pre-painted to match the factory color immediately, you might find the need to prime and paint a hurdle. Additionally, this set is strictly for the BMW models listed; it will not fit a Mercedes or any other manufacturer, so verifying your specific year and trim is essential before purchasing.
• Best for Single-Side Replacement → LIRHIQYGF Front Headlight Washer, as it is sold as a single unit count specifically for the right side of a Mercedes.
• Best for Full Pair Replacement → Generic Headlight Washer Cover, which includes both driver and passenger side units in a bundle description.
• Best for Exact OEM Fitment → LIRHIQYGF Front Headlight Washer, matching the specific Mercedes part number A1648850226 without modification.
• Best for Custom Color Matching → Generic Headlight Washer Cover, due to its primed finish allowing for post-installation painting.
• Best for BMW Owners → Generic Headlight Washer Cover, as it explicitly lists compatibility with 328i, 335i, and xDrive models from 2007-2010.
• Best for Mercedes GL-Class Owners → LIRHIQYGF Front Headlight Washer, covering the W164 and X164 chassis codes for years 2008-2012.
• Best for Moving Day Efficiency → LIRHIQYGF Front Headlight Washer, because its single-unit, vehicle-specific design reduces the time spent hunting for the correct part during a rush.
In my opinion, the choice between these two depends entirely on whether you are fixing a Mercedes or a BMW, as they are not interchangeable. However, if I had to recommend based on ease of use and certainty of fit for a critical safety component like a headlight washer, I would lean toward the LIRHIQYGF Front Headlight Washer for the Mercedes owner. The specificity of the part number and the focus on a single, precise fitment means less risk of error. When you are moving day or trying to get your car back on the road quickly, having a part that guarantees it will fit the right spot without needing paint or extra steps is invaluable. That said, for the BMW owner, the Generic set offers great value by providing both sides and the flexibility to customize the finish. Always check the current price on Amazon to see which fits your budget best, but prioritize the one that matches your vehicle's make and model exactly.
You must buy a separate unit if you need to replace the left side as well.
Technically yes, but the product is listed with a "Primed" finish, meaning it is a raw surface. To achieve a professional look that matches your BMW's body color, you will likely need to apply paint after installation.
According to the fitment data provided, this specific set is designed for models from 2007 to 2010. It does not list compatibility for 2011 or newer models, so verify your year carefully before ordering.
While specific durability metrics aren't listed, the part is described as a "Headlamp Spray Nozzle Cap" made to match the original equipment manufacturer (OEM) specifications for the Mercedes GL-Class, implying it is built to withstand standard weather and road conditions.
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