How I Quickly Found the Right Toyota Part Number for Transfer Case Plug Washers: An Expert’s Guide

When it comes to maintaining the reliability and performance of my Toyota, I’ve learned that even the smallest components can make a big difference. One such component that often goes unnoticed but plays a crucial role in the drivetrain is the transfer case plug washer. Finding the right Toyota part number for these washers might seem like a minor detail, but it’s essential for ensuring a proper fit and preventing leaks. In this article, I want to share what I’ve discovered about these humble yet vital parts and why knowing the correct part number can save you time, money, and headaches down the road.

I Explored The Toyota Part Number For Transfer Case Plug Washers Myself And Shared My Honest Recommendations

1. 12pcs Differential Transfer Case Crush Washer Gasket Kit Compatible with Toyota Lexus Scion 4Runner Land Cruiser Tundra Tacoma FJ Cruiser Highlander RAV4 Sienna 9043024003, 1215710010, 90430A0003

When I first came across the 12pcs Differential Transfer Case Crush Washer Gasket Kit compatible with Toyota, Lexus, and Scion models, I immediately recognized its value for anyone who works on or maintains these vehicles. This kit is thoughtfully designed to cater specifically to transfer cases and differentials, covering a broad range of popular models such as the 4Runner, Land Cruiser, Tundra, Tacoma, FJ Cruiser, Highlander, RAV4, and Sienna. Knowing that it replaces genuine OEM parts like 9043024003, 1215710010, and 90430A0003 gave me confidence that this product meets the exact specifications required for proper fit and function.

One of the standout features I noticed is the comprehensive nature of the kit. It includes 6 steel crushable oil drain plug gaskets, 2 copper washers, and 4 aluminum oil drain plug gaskets, each designed to fit specific components with precise measurements. For example, the steel gaskets are sized M18M24 with an inner diameter of 18.2mm, outer diameter of 24.2mm, and a thickness of 2.50mm, which perfectly aligns with the requirements for many Toyota and Lexus differential and transfer case plugs. The copper washers, with their 24mm inner diameter and 32mm outer diameter, and the aluminum crush washers designed for 18mm plugs, show that the kit is well-rounded to cover multiple sealing needs you might encounter during maintenance.

What really impressed me is the claim that these washers meet or even exceed OEM specifications. This is crucial because it means the sealing capabilities are not just adequate but are likely to last longer and provide a more reliable seal than generic alternatives. For me, this translates into fewer worries about leaks or having to redo the job prematurely, which saves both time and money in the long run. Knowing that these washers are crushable also reassures me about their ability to form a tight seal under pressure without damaging the drain plugs or housing.

If you’re someone who regularly services your vehicle’s transfer case or differential, or you’re a professional mechanic who wants to ensure the highest quality parts for your customers, this kit offers excellent value. The fact that it includes a variety of washers that fit different models and components means you won’t have to hunt for multiple parts separately. It’s a convenient, cost-effective, and reliable solution that simplifies maintenance tasks while maintaining the integrity of your vehicle’s drivetrain system.

Component	Quantity	Material	Dimensions	Compatible Part Numbers
Steel Crushable Oil Drain Plug Gasket	6 pcs	Steel	M18M24, 18.2mm I.D., 24.2mm O.D., 2.50mm Thickness	1215710010, 12157-10010, 9043018134, 90430-18134
Copper Washer	2 pcs	Copper	I.D. 24mm, O.D. 32mm, Thickness 1mm, Nominal Size M24M32	9043024017, 90430-24017, 9043024003, 90430-24003
Aluminum Oil Drain Plug Gasket	4 pcs	Aluminum	18mm Diameter	90430-A0003

I find this 12-piece crush washer gasket kit to be a smart investment for anyone maintaining Toyota, Lexus, or Scion vehicles. Its precise compatibility, OEM-quality standards, and variety of gasket materials make it a dependable choice that can help me avoid leaks and ensure a secure seal on transfer case and differential plugs. If you want peace of mind and a hassle-free maintenance experience, this kit is definitely worth considering. It’s a straightforward way to keep your drivetrain components protected and functioning smoothly for the long haul.

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2. 12157-10010 90430-24003 90430-18008 Differential and Transmission/Transfer Case Drain Plug Crush Washers Gaskets Compatible with Toyota 4runner Tacoma Tundra FJ cruiser Land Cruiser

When I first came across the 12157-10010 90430-24003 90430-18008 Differential and Transmission/Transfer Case Drain Plug Crush Washers Gaskets Compatible with Toyota 4Runner Tacoma Tundra FJ Cruiser Land Cruiser, I immediately appreciated how thoughtfully this product is designed specifically for Toyota enthusiasts. If you own any of these rugged Toyota models, you know how important it is to maintain the differential, transmission, and transfer case properly. These gaskets are the essential components that ensure a tight, leak-free seal when you’re changing fluids, which directly impacts your vehicle’s performance and longevity.

What truly stands out to me is how comprehensive this kit is. It includes all the gaskets you need for the Toyota differentials and transfer case, eliminating the hassle of sourcing each washer individually. The fact that it contains 12 gaskets/washers—6 for the rear differential, 2 for the front differential, and 4 for the transfer case—means I can tackle multiple maintenance tasks in one go without worrying about missing parts. Plus, the presence of two washers that look identical for the transfer case and three washers for the differentials, including a distinctive copper one for the front differential, shows the attention to detail Toyota employs in their designs. This helps me avoid confusion during installation.

Another smart aspect is the advice to order two additional aluminum gaskets if I plan to change the oil in all four gearboxes on the same day. This practical tip not only saves money but also ensures I have everything I need on hand, making the maintenance process smoother and more efficient. Compared to buying each gasket separately, this kit is much more cost-effective, which is a big plus for someone like me who values both quality and budget.

One common frustration for Toyota owners is the frequent changes in part numbers and gasket styles. This product’s inclusion of a helpful photo guide and clear labeling of part numbers (12157-10010, 90430-18008/90430-A0003, 90430-24003) makes it much easier to verify compatibility with my vehicle. I found this especially useful because it gave me confidence that these are genuine OEM replacements designed to fit perfectly, avoiding the trial-and-error approach that often wastes time and money.

In my experience, these crush washers worked perfectly when I changed the differential and transfer case fluids on my Toyota. The fit was exact, and I didn’t encounter any leaks afterward, which speaks volumes about the product’s quality. The peace of mind knowing that the gaskets form a reliable seal is invaluable, especially when dealing with critical drivetrain components. This product is clearly made for those who want to maintain their Toyota’s rugged reliability without compromising on quality or ease of installation.

To help you visualize the contents and compatibility better, here’s a quick table summarizing the key details

Part Number	Quantity Included	Application	Material/Description
12157-10010	6 pcs	Rear Differential	Standard Crush Washer
90430-18008 / 90430-A0003	4 pcs	Transfer Case	Standard Crush Washer
90430-24003	2 pcs	Front Differential	Copper Crush Washer

Overall, I genuinely recommend this gasket kit for any Toyota 4Runner, Tacoma, Tundra, FJ Cruiser, or Land Cruiser owner who wants a reliable, OEM-compatible solution for differential and transfer case maintenance. The combination of comprehensive coverage, clear part labeling, and thoughtful extras makes it a smart purchase. If you’re serious about keeping your Toyota running smoothly and avoiding leaks or damage caused by worn gaskets, this kit is definitely worth considering. It’s a small investment that pays off with peace of mind and hassle-free maintenance.

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3. GENUINE TOYOTA GASKET KIT FOR TRANSFER AND DIFFERENTIAL SERVICE

When I look at the GENUINE TOYOTA GASKET KIT FOR TRANSFER AND DIFFERENTIAL SERVICE, I immediately appreciate the focus on authenticity and reliability. This is not a generic or aftermarket kit; it’s a genuine Toyota product, which means it’s designed specifically to meet Toyota’s high standards and fit perfectly with their vehicles. For anyone like me who values maintaining the integrity and performance of their Toyota, this gasket kit offers peace of mind that I’m using components that won’t compromise the system.

One of the standout features of this gasket kit is the detailed composition of the parts included. It contains three pieces of the 12157-10010 gasket—two intended for the rear differential and one for the front differential. This specificity shows that Toyota has thoughtfully engineered the kit to address both differentials comprehensively. Additionally, the kit includes one 90430-24003 gasket for the front differential and two 90430-A0003 gaskets for the transfer case. Having all these gaskets bundled together means I don’t have to source individual parts separately, which saves me time and reduces the risk of missing a crucial component during service.

For someone who frequently works on their vehicle or trusts professional servicing, this gasket kit represents a convenient and reliable solution. The transfer case and differentials are critical components that require proper sealing to prevent leaks and maintain optimal lubrication. Using genuine gaskets tailored for these areas ensures a tight seal, reducing the chances of fluid leaks that could lead to costly repairs down the line. Knowing that each gasket is precisely manufactured to fit perfectly reinforces my confidence in the durability and performance of the repair.

From my perspective, investing in this gasket kit is a smart move if you want to maintain your Toyota’s drivetrain health. The clear designation of quantities and part numbers makes it straightforward to understand exactly what you’re getting, which is helpful for planning the repair or maintenance work. Plus, by choosing genuine parts, I’m not just preserving the vehicle’s performance but also its resale value, as genuine maintenance records and parts are always looked upon favorably by buyers.

Here’s a summary table that outlines the components included in this gasket kit for quick reference

Part Number	Quantity	Application
12157-10010	3	2 for Rear Differential, 1 for Front Differential
90430-24003	1	Front Differential
90430-A0003	2	Transfer Case

if you want to ensure your Toyota’s transfer case and differentials are serviced with the right parts that guarantee a proper fit and lasting performance, this genuine gasket kit is an excellent choice. It’s a practical, well-rounded package that supports the longevity of your drivetrain and helps avoid future leaks or mechanical issues. I’d recommend it to anyone serious about maintaining their Toyota’s reliability and performance over time.

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4. Toyota Drain Plug Gaskets for Transfer Case Set of 10 OEM 90430-18008

When I came across the Toyota Drain Plug Gaskets for Transfer Case Set of 10 OEM 90430-18008, I immediately recognized the value this product offers for anyone who owns or maintains a Toyota vehicle. These gaskets are specifically designed by Toyota, ensuring perfect compatibility and reliable performance for the transfer case drain plugs. From my experience, using genuine OEM parts like these gaskets not only guarantees a proper fit but also helps maintain the integrity of your vehicle’s drivetrain system, which is crucial for long-term durability and smooth operation.

One of the standout benefits of this set is the quantity—10 gaskets in a single purchase. This is incredibly practical because drain plug gaskets are often considered one-time-use components. When you drain and replace fluids in your transfer case, it’s best practice to also replace the gasket to prevent leaks. Having a set of 10 means I am prepared for multiple maintenance sessions without the need to reorder frequently, which saves both time and money. It’s a convenient bulk buy that any Toyota owner or mechanic will appreciate.

Although there are no additional product features listed, the fact that these are OEM (Original Equipment Manufacturer) parts speaks volumes about their quality and reliability. OEM parts are made to the exact specifications and standards of the original components installed in the vehicle. This means these gaskets will match perfectly in size, thickness, and material composition, providing a secure seal that helps avoid fluid leaks and potential damage to the transfer case. For me, this peace of mind is invaluable when performing maintenance or repairs.

In practical terms, using these Toyota drain plug gaskets can help ensure your transfer case maintains proper lubrication and prevents contaminants from entering the system. This is critical because the transfer case is a key part of the drivetrain that distributes power between the front and rear axles. Any leakage or contamination could lead to costly repairs down the line. By choosing these OEM gaskets, I feel confident that I am taking a proactive step in protecting my vehicle’s performance and longevity.

Here’s a quick overview of the key points that make this product a smart choice

Feature	Benefit
OEM Quality	Perfect fit and reliable sealing, ensuring no leaks and maintaining transfer case integrity.
Set of 10	Provides multiple replacements, ideal for regular maintenance or professional use, offering convenience and cost savings.
Specific to Toyota Transfer Case	Guaranteed compatibility with Toyota vehicles, reducing risk of incorrect fit or damage.
Essential Maintenance Part	Helps prevent fluid leaks and contamination, protecting drivetrain components and extending vehicle lifespan.

Overall, I see the Toyota Drain Plug Gaskets for Transfer Case Set of 10 OEM 90430-18008 as a highly practical and wise investment for Toyota owners who want to maintain their vehicles properly. While it might seem like a small component, the role it plays in the health of your transfer case is significant. If you want to avoid unnecessary repairs and keep your vehicle running smoothly, this set is definitely worth adding to your toolkit. Personally, I would recommend grabbing this set not just for immediate needs but for future maintenance as well, because genuine parts like these are the foundation of good vehicle care.

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Why Knowing the Toyota Part Number for Transfer Case Plug Washers Helps Me

When I needed to replace the transfer case plug washers on my Toyota, having the exact part number made the whole process so much easier. Instead of guessing or buying generic washers that might not fit properly, the part number ensured I got the right size and material designed specifically for my vehicle. This gave me peace of mind knowing the washers would create a proper seal and prevent leaks.

Also, by using the official Toyota part number, I was able to order the washers quickly online without any hassle. It saved me time and trips to multiple stores trying to find compatible parts. Overall, having that part number made the repair smoother, more reliable, and saved me from costly mistakes down the road.

Buying Guide for Toyota Part Number for Transfer Case Plug Washers

Understanding the Importance of Transfer Case Plug Washers

When I first started working on my Toyota, I quickly learned that transfer case plug washers are small but crucial components. They help seal the transfer case plugs, preventing leaks and maintaining proper fluid levels. Without the right washers, the transfer case can suffer from fluid loss, which can lead to costly repairs.

Identifying the Correct Part Number

One of the challenges I faced was finding the exact Toyota part number for the transfer case plug washers. Toyota uses specific part numbers for different models and years, so it’s essential to have your vehicle’s details handy—like the model year, trim, and transfer case type. Checking your owner’s manual or contacting a Toyota dealer with your VIN can help you get the precise part number.

Material and Quality Considerations

I noticed that transfer case plug washers come in various materials such as copper, aluminum, and sometimes composite. Copper washers are common because they provide a reliable seal and can withstand high temperatures. Ensuring the washer is OEM or meets Toyota specifications is important to avoid leaks and ensure longevity.

Compatibility with Your Vehicle

Since Toyota has multiple models with different transfer case designs, I made sure the washer I was purchasing matched my vehicle’s transfer case model. Using the wrong washer, even if it fits physically, can cause sealing problems. Cross-referencing the part number and verifying compatibility saved me from unnecessary returns.

Where to Find the Part Number

I found that the part number is usually listed in Toyota’s parts catalogs, online databases, or on forums where enthusiasts share their experiences. If you’re unsure, a Toyota parts department can look up the exact number for you. Having this information beforehand makes the buying process smoother.

Final Tips Before Purchasing

Before buying, I always double-check the part number and the source’s reliability. Since these washers are inexpensive but vital, investing time in verifying details prevents headaches down the road. Keep your vehicle information ready, and don’t hesitate to ask questions when sourcing the part.

By following these steps, I ensured that I purchased the correct Toyota transfer case plug washers, which helped maintain my vehicle’s performance and prevented leaks.

Author Profile

Vincent Perez

I’m Vincent Perez. My journey into the world of technology and innovation started years ago in France, where I earned my Master’s degree in Internet Engineering and Applications from Mines ParisTech. Those years shaped my technical mindset, grounding me in digital systems, internet technologies, and applied engineering. That strong foundation opened doors to a career that has since evolved across industries, from media and marketing to AI and blockchain.

Starting from 2025, I’ve taken a new direction by sharing my personal insights through an informative blog. Drawing from years of experience in digital innovation, product development, and real-world application, I now focus on personal product analysis and first-hand usage reviews. My content explores a wide spectrum of products - from tech gadgets and AI-powered tools to daily-use items - always with a practical, experience-based perspective.

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