If you want a heavy-duty, high-hardness steel plug specifically engineered for Toyota and Lexus rear differentials with M18*1.5 threads, choose BILEKSU Rear Differential Fill; if you need a two-pack of carbon steel drain plugs with T45 Torx heads for Lincoln and Ford oil pans featuring M12-1.75 threads, choose VKQTS M12-1.75.
• BILEKSU Rear Differential Fill: Its biggest strength is the robust, high-hardness steel construction designed to resist stripping in tough differential housings, while its trade-off is that it is strictly single-unit and model-specific for Toyota/Lexus vehicles only. This pick is for the mechanic shop maintaining 4Runner or Land Cruiser fleets.
• VKQTS M12-1.75: Its biggest strength is the value of getting a two-pack with included gaskets for common Ford and Lincoln applications, but its trade-off is the use of standard carbon steel which prioritizes moderate toughness over extreme hardness. This pick is for the shop servicing Lincoln MKT, Navigator, or Ford-based platforms.
The BILEKSU Rear Differential Fill Plug is built for one specific purpose: replacing the factory drain plug on a wide range of Toyota and Lexus vehicles without compromising the integrity of the housing. When I look at the specifications, the standout feature is the material choice. This unit is crafted from robust, high-hardness steel. In a professional setting, especially when working on older chassis like the 1984-1989 Van or the classic 1979-1995 Pickup, stripped threads are a nightmare. The precision-machined threads on this plug are designed to provide a tight seal that resists loosening over time, effectively minimizing costly oil leaks.
For the mechanic shop, the magnetic capability here is not just an add-on; it is a critical maintenance tool. The integrated high-strength magnet grabs and holds microscopic metal particles that would otherwise circulate through the differential fluid. This promotes cleaner oil and reduces accelerated wear on the gears inside the axle housing. If your shop deals with the heavy towing demands of a 4Runner or the rugged off-roading of a FJ Cruiser, keeping debris out of the differential is non-negotiable.
This product is ideal for anyone who needs a direct substitute for OEM part #90431-18057. It fits everything from the 1969-2007 Land Cruiser to the modern 2023 RX450hL. However, it is important to note that this is a single-unit package. If you are doing a fleet job where you might lose a plug or need spares, you will have to order multiple units. It is a specialized tool for a specialized application.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-11-07 · 6 min read · Independent comparison
The VKQTS M12-1.75 Magnetic Oil Drain Plug serves a different demographic entirely, focusing on the vast majority of Ford and Lincoln vehicles that utilize smaller engine oil pans. The most immediate advantage for a shop owner is the packaging. You receive two sets of plugs, each complete with gaskets to fill tiny gaps in contact surfaces. This inclusion ensures a good seal right out of the box, eliminating the need to hunt down separate crush washers during a busy service day. The design accommodates engines running normally by producing extremely small metal chips, which the magnetic end actively adsorbs to keep the oil relatively clean and prolong engine life.
Material-wise, this plug uses carbon steel as its main component. While it lacks the "high-hardness" designation of the BILEKSU unit, carbon steel offers good strength and moderate toughness. This makes it suitable for repeated disassembly and use without the threads wearing out easily. For shops servicing the 2014-2019 MKT, the 2015-2023 Navigator, or the 2020-2024 Corsair, this specific combination of thread size (M12*1.75) and drive type is essential.
Who should buy this? It is perfect for general automotive repair shops that handle a mix of domestic trucks and SUVs. The fact that it comes with gaskets and is sold in a two-pack adds significant practical value for routine oil changes. However, it is crucial to verify fitment before purchase. The replacement OEM numbers listed include 65372 and 090-034.1, among others, but these do not match the dimensions required for a Toyota differential. If you attempt to use this on a vehicle requiring M18 threads, it simply will not fit. It is a versatile solution for the oil pan, but it is not a universal fix-all for every drain plug on a vehicle.
• Best for Thread Integrity: Choose BILEKSU Rear Differential Fill if you are dealing with the larger M18*1.5 threads found in Toyota axles, as the high-hardness steel is less likely to strip under torque compared to standard bolts.
• Best Value for Volume: Choose VKQTS M12-1.75 if you need to stock up for a Ford/Lincoln service bay, since the two-pack with included gaskets covers two jobs in one transaction.
• Best for Specific Applications: Pick BILEKSU for the 1984-2024 4Runner, Highlander, RAV4, and Lexus GX series; pick VKQTS for the Lincoln Navigator, MKZ, and Ford Mustang/Explorer variants using M12 specs.
• Best for Debris Control: Both offer magnetic ends, but BILEKSU is optimized for the heavier metal shavings typical of differential gear wear, while VKQTS targets the finer engine sludge and chips.
• Best Material Hardness: If you prioritize resistance to breakage and stripping in high-torque scenarios, the high-hardness steel of BILEKSU is the superior technical specification.
• Best Seal Reliability: VKQTS includes gaskets in the package to ensure an immediate seal, while BILEKSU relies on the precision-machined threads alone for its leak prevention.
• Best for Fleet Maintenance: For a shop managing mixed fleets, having both is ideal, but for dedicated Toyota work, BILEKSU is the only logical choice due to the thread mismatch.
In my opinion, for a mechanic shop looking to maintain their inventory efficiently, the BILEKSU Rear Differential Fill is the more critical purchase for those specializing in the Toyota ecosystem. The high-hardness steel and precise M18*1.5 threading solve a specific, high-risk failure point that generic plugs cannot address. However, if your shop is focused on Ford and Lincoln services, the VKQTS M12-1.75 is the smarter buy because the two-pack format and included gaskets streamline your workflow significantly. I recommend starting with the product that matches your primary vehicle brand, as the thread sizes are mutually exclusive and neither can serve as a universal replacement for the other.
No, they are highly specific. BILEKSU is for Toyota/Lexus M18*1.5 threads, while VKQTS is for Ford/Lincoln M12-1.75 threads. Always check your vehicle's manual before buying.
Yes, the VKQTS package includes gaskets to fill contact surface gaps and ensure a proper seal, whereas the BILEKSU plug relies on its machined threads for sealing.
Using the wrong size will prevent the plug from seating correctly, leading to immediate oil leaks or stripped threads that could damage the oil pan or differential housing permanently.
Both units feature integrated magnets designed to capture metal particles. BILEKSU focuses on differential wear debris, while VKQTS targets engine sludge, both helping to extend the life of their respective fluids.
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