Automotive replacement transmission washers are crucial components for maintaining a leak-free seal during fluid changes, preventing drips and ensuring optimal transmission performance. These small but vital gaskets are designed to crush slightly upon tightening, forming a tight seal that prevents fluid loss from the drain plug. Products were evaluated based on material quality, precise compatibility, sealing performance, pack quantity, user reviews, and feature analysis.
20-Pack 90471-PX4-000 Transmission Fluid Oil Drain Plug Crush Washer Gasket 18mm - Premium Seal Replacement for Honda Accord Acura Civic Ridgeline Odyssey CRV CR-V Pilot Fit Element, by DCWecher
$4.99
The DCWecher 20-Pack offers a generous quantity of premium aluminum washers, backed by a 'trusted brand' claim for reliable sealing.
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Transmission Fluid Drain Plug Crush Washer for Honda Accord Acura Civic Ridgeline Odyssey CRV CR-V Pilot Fit Element, Replacement for The Part # 90471PX4000 90471-PX4-000, Pack of 10 pcs
$6.99
The AOIT 10-pack provides essential 18mm crush washers with 'excellent sealing performance' at a practical quantity for routine maintenance.
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12pcs Oil Drain Plug Crush Washer 94109-20000 90471-PX4-000 20mm 18mm Aluminum Gasket Replacement for Honda/Acura Accord Civic CR-V Pilot Odyssey Ridgeline Transmission Differential by AUTOMAJOR
$6.95
AUTOMAJOR offers a comprehensive 12-piece kit with both 18mm and 20mm washers, emphasizing 'premium quality' materials and a 'secure fit' for diverse needs.
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- 【PRECISE FITMENT】 Designed as a direct replacement for OEM 90471-PX4-000 transmission drain plug washer. Manufactured to match original specifications for a secure fit and dependable sealing performance.
- 【PREMIUM ALUMINUM CONSTRUCTION】 Made from high-quality aluminum material with excellent crush characteristics. Provides a reliable seal between the drain plug and transmission housing while resisting deformation during installation.
- 【HELPS PREVENT FLUID LEAKS】 Engineered to create a tight seal when replacing transmission fluid. Replacing worn or flattened washers helps reduce the risk of leaks and promotes proper transmission maintenance.
- 【WIDE VEHICLE COMPATIBILITY】 Compatible with many Honda and Acura vehicles, including Accord, Civic, CR-V, Pilot, Odyssey, Ridgeline, Fit, Element, Passport, MDX, RDX, TL, TSX and more. Please verify OEM number and dimensions before purchase.
- 【VALUE PACK FOR MULTIPLE SERVICES】 Package includes:20pcs plug washers. Providing a convenient solution for routine transmission fluid changes and future maintenance needs. Ideal for DIY vehicle owners and professional technicians.
- 【Seamless Substitution】Upgrade your automotive transmission effortlessly! Our crush washer oil drain plug gaskets perfectly replace your Hon da OEM washer. Ideal for transmission fluid changes, these drain plug crush washers directly replace...
- 【Wide Compatibility】Our transmission fluid drain plug crush washers offer wide-ranging compatibility with Hon da/Acura models, such as CR-V, CR-Z, Civic, Crosstour, Del Sol Coupe, Element, Fit, HR-V, Insight, Odyssey, Passport, Pilot, Prelude...
- 【Excellent Sealing Performance】No more oil drips! Our oil plug gaskets offer a secure and leak-free fit. With a snug and flush design, these oil drain plug gaskets outperform plastic or rubber seals, protecting your engine. Upgrade today for...
- 【Premium Quality Material】Experience unmatched durability and performance with our oil plug crush washers, meticulously crafted from premium aluminum. Engineered to withstand high temperatures, eliminate oil degradation, and combat corrosion, our oil...
- 【Package Includes】Get a pack of 10 aluminum crush washers! Designed with an outside diameter of 25.5mm / 1"", an inside diameter of 18mm / 0.71"", and a thickness of 1.95mm / 0.08"". Ensure a perfect fit and reliable sealing for your transmission...
- WIDE COMPATIBILITY: Crush washer for transmission fluid and rear differential oil drain plug is compatible with including, but not limited to Accord Civic Clarity Crosstour CR-V CR-Z DelSol HR-V Element Fit Insight Odyssey Prelude Pilot Passport Ridgeline...
- CERTIFIED OEM: 90471-PX4-000 & 94109-20000. 18mm and 20mm oil drain plug washer are designed to exact fit.
- HIGH QUALITY: High quality Aluminum material, which have smooth surface, our oil drain plug washer fits snug and boast a much longer lasting sealing capabilities.
- DIMESIONS: 90471-PX4-000: ID is 18mm inner diameter, OD is 25.5mm outer diameter, and 2mm thickness. 94109-2000: ID is 24mm inner diameter, OD is 32mm outer diameter, and 1mm thickness.
- FUNCTION: Oil drain plug washers to reduce the risk of oil leaks to keep your engine safe, designed to replace worn-out components and restore your vehicle to peak condition.
- Reliable Honda Replacement: Mission Automotive's transmission fluid drain plug washer is a dependable replacement part compatible with Honda OEM washers. It is designed to deliver a tight seal and prevent leaks during transmission fluid changes
- Durable Quality Materials: Crafted from quality materials, our transmission fluid drain plug crush washer ensures long-lasting performance. Engineered for a precise fit, it promises durability and reliability for automotive replacement tasks
- Universal Fit Compatibility: This oil drain plug crush washer is compatible with Honda models including Accord, Civic, and CR-V. Its versatility makes it an essential automotive replacement part for various vehicles and maintenance needs
- Precise Dimensions: The transmission fluid washer features an outside diameter of 25.5 mm, inside diameter of 18 mm, and thickness of 1.95 mm. These precise measurements ensure a perfect fit as a transmission plug washer for diverse applications
- Comprehensive Value Pack: Our pack includes 20 oil drain plug washers, ideal for both professional and DIY use. Enhance your collection of automotive parts with this reliable kit, designed to meet high standards of automotive fluid maintenance
- Includes 24 pcs 90471-PX4-000 Oil Drain Plug Gaskets
- Outside diameter: 25.5 mm/ 1 inch, Inner diameter: 18 mm/ 0.71 inch
- Compatible with Honda Accord Civic Acura CRV Odyssey more details in the Product Description below.
- Professional MFG; High quality material; Easy installation.You might be able to fix your problem without visiting your local auto shop, saving both time and money.
- Material: Crafted from durable, high-grade aluminum, these transmission drain plug gaskets and differential crush washers offer optimal malleability and heat resistance for a perfect, leak-free seal every time
- Installation: Replace OE specifications 90471-PX4-000, 94109-20000, these 18mm and 20mm oil pan washers ensure a quick and exact fit for Honda transmission plug and Acura differential drain bolt installation, with no modifications required
- Design: Designed specifically to stop oil leaks from automatic transmission and rear differential drain plugs. These sealing washers protect your drivetrain by maintaining critical fluid pressure and preventing contamination
- Compatibility: These Honda Accord drain plug washers and Acura oil seal rings are tested for a broad range of models including compatible with Civic, CR-V, Pilot, Odyssey, MDX, RDX, TL, and more from 1990-2022, ensuring wide application for your garage
- Packing: Includes a balanced set of washers for comprehensive maintenance. The kit provides the correct transmission plug gasket and differential sealing washer combination for a full fluid service, promoting engine safety and long-lasting performance
- WIDE COMPATIBILITY: the Transmission Fluid and Rear Differential Oil Drain Plug Crush Washer is compatible with Honda/Acura models including, but not limited to Accord Civic Clarity CR-V CR-Z Crosstour Element Fit HR-V Insight Passport Pilot Prelude...
- 10 PCS M18 Aluminum Crush Washer (Size: 18*26*2mm) Replace: 90471-PX4-000, 16955
- 10 PCS M20 Aluminum Crush Washer (Size: 20*28*2mm) Replace:095-023, 097-831CD, 65277, 016402, 90413-568-690, 94020250, 94109-20000
- WEAR RESISTANCE: The 20mm and 18mm Transmission Fluid and Rear Differential Oil Drain Plug Crush Washer Gasket prevents any environmental damage such as high humidity, oxidative damage, corrosion excessive wear and tear.
- SECURE FIT: our oil drain plug washer fits snug and flush providing a much more tight and secure fit than plastic or cooper seals and boast a much longer lasting sealing capabilities.
- O.D.(outside diameter): 24 mm / 0.94 inch , I.D.(inside diameter): 18 mm / 0.71 inch , Thickness: 2 mm / 0.08 inch
- This is transmission fluid drain plug crush washer seal fits for Toyota 4runner Tacoma Tundra FJ cruiser Land Cruiser.
- This 18 mm / 0.71 inch aluminum transmission fluid drain plug crush washer seal is needed to change the transmission fluid
- This is the direct replacement for the part# 90430-18008, 9043018008, 90430-A0003, 90430A0003
- Meet OEM Specification
- Order Includes: 1x Transmission Friction Washer
- Compatible with Can-Am: Outlander 500 2007-2015, Outlander L 500 2015, Outlander 570 2018, Outlander 650 2006-2015, Outlander 650 6x6 2016-2018, Outlander 800 2006-2008, Outlander 800R 2009-2015, Outlander 850 2018, Outlander 1000R 2015-2018, Outlander...
- Compatible with Can-Am: Outlander Max 650 2006-2015, Outlander Max 1000 2015, Outlander L Max 2016-2015, Outlander Max 800 2006-2008, Outlander Max 800R 2009-2015, Outlander Max 850 2018, Renegade 2016-2017, Renegade 500 2008-2015, Renegade...
- Part Number: 420460430
- We strongly suggest comparing the posted picture to the unit(s) that needs to be replaced.
- Material: High quality Aluminum material, which have smooth surface, wear resistance, can ensure a long time using in bad environment like high temperature, cold weather.
- Certified OEM: 90471-PX4-000 & 94109-20000. 90471-PX4-000: They have a 18mm inner diameter, 25.5mm outer diameter, and 2mm thickness. 94109-2000: They have a 24mm inner diameter, 32mm outer diameter, and 1mm thickness.
- Wide Compatibility: Designed for Acura models, this differential drain plug crush washer is compatible with popular vehicles like Civic, Clarity, Crosstour, Accord, CR-V, Pilot, Passport, CR-Z, DelSol, ILX, Integra,HR-V, Fit, Insight, Odyssey, Element...
- Function: Regularly replace the oil drain plug washers to reduce the risk of oil leaks to keep your engine safe, High conductivity, and play the role of protection and stability.
- Widely Applications: Flat washers assortment kit are widely used for sump plugs, water, fuel and hydraulic fittings, this washer fits tightly and evenly. It delivers a more secure seal compared to plastic washers, making it versatile for multiple...
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Last update on 2026-07-17 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Transmission Washers
Material Quality and Durability
The longevity and effectiveness of an automotive replacement transmission washer are fundamentally tied to its material composition. Most commonly, these washers are crafted from aluminum, which is designed to deform slightly under torque, creating a positive seal. Brands like DCWecher and BSAMZO explicitly highlight their use of 'premium aluminum' or 'high quality Aluminum material,' suggesting a focus on consistent crush properties and resistance to corrosion. While aluminum is standard, some products, such as AUTOMAJOR, mention 'high grade rubber seal' in their descriptions, though the primary crush washer material for drain plugs is typically metal. The main difference is how well the material maintains its integrity over time and under varying temperatures, ensuring repeated reliable sealing performance when replaced.
Compatibility and Exact Sizing
Selecting the correct size and ensuring compatibility with your vehicle's OEM specifications is paramount. Transmission fluid drain plugs often require specific washer dimensions, with 18mm and 20mm being common sizes referenced across many Honda and Acura models. For instance, the DCWecher and Mission Automotive washers are 18mm, specifically replacing OEM part number 90471-PX4-000. However, some vehicles, or even different drain plugs on the same vehicle (e.g., rear differential), might require a 20mm washer, corresponding to OEM part number 94109-20000. Products like BSAMZO and AUTOMAJOR offer convenience by including both 18mm and 20mm washers in their kits, catering to a wider range of service needs and ensuring 'wide compatibility' as claimed. Always cross-reference the required OEM part number to guarantee a 'secure fit' and prevent leaks.
Pack Quantity and Kit Options
The quantity of washers in a pack should align with your maintenance frequency and the number of vehicles you service. For a single vehicle owner performing annual transmission fluid changes, a 10-pack from AOIT might be sufficient, offering several years of replacements. However, for those with multiple vehicles or who prefer to have spares readily available, larger packs like the 20-pack from DCWecher or Mission Automotive offer better value over time. Furthermore, some products, such as BSAMZO and AUTOMAJOR, go beyond single-size packs by offering kits that combine both 18mm and 20mm washers. These comprehensive kits are particularly useful for vehicles that require different washer sizes for the transmission and rear differential, streamlining the purchasing process and ensuring all necessary components are on hand for a complete fluid service.
Pros & Cons
20-Pack 90471-PX4-000 Transmission Fluid Oil Drain Plug Crush Washer Gasket 18mm - Premium Seal Replacement for Honda Accord Acura Civic Ridgeline Odyssey CRV CR-V Pilot Fit Element, by DCWecher
Pros
- Explicitly states 'PREMIUM MATERIALS' (aluminum) for reliable sealing.
- Advertised as a 'TRUSTED BRAND' in specialty auto parts.
- Generous 20-pack quantity provides multiple replacements.
- Meticulously crafted for a 'SECURE FIT' as per description.
Cons
- Only includes 18mm washers, limiting use to specific drain plugs.
- Does not explicitly mention compatibility with rear differential drain plugs.
Mission Automotive Mission Transmission Washer Drain Plug Seal Gaskets - 25.5mm OD x 18mm ID x 1.95mm Thick, 20-Pack - Compatible with Honda & Acura Models
Pros
- Labeled as 'Reliable Honda Replacement' indicating specific vehicle focus.
- Crafted from 'Durable Quality Materials' for long-lasting use.
- Offers a 20-pack, providing good value and multiple uses.
- Claims 'Universal Fit Compatibility' for various Honda & Acura models.
Cons
- Material quality description ('quality materials') is less specific than 'premium aluminum'.
- Only supplies 18mm washers, potentially requiring a separate purchase for 20mm needs.
6pcs Transmission Fluid & 6pcs Rear Differential Oil Drain Plug Washer Gasket Seal - 20mm+18mm Replacement for Honda Acura Civic Accord Odyssey CRV Pilot Fit, OEM PN Part# 94109-2000 & 90471-PX4-000
Pros
- Offers 'WIDE COMPATIBILITY' by including both 18mm and 20mm washers.
- Claims 'CERTIFIED OEM' for specified part numbers 90471-PX4-000 & 94109-20000.
- Made from 'High quality Aluminum material' with a smooth surface.
- Includes washers for both transmission fluid and rear differential oil drain plugs.
Cons
- Pack quantity (6pcs of each size) is smaller compared to 20-packs from other brands.
- Durability claims are general ('high quality Aluminum') rather than specific performance metrics.
Common Mistakes to Avoid
Incorrect Size Selection for Drain Plugs
A common pitfall is assuming all drain plugs on a vehicle use the same size washer. While many Honda and Acura transmissions utilize an 18mm washer (like those offered by DCWecher and Mission Automotive, replacing 90471-PX4-000), the rear differential often requires a 20mm washer (OEM PN 94109-20000). Failing to verify the correct size, especially when servicing multiple fluid types, can lead to leaks or an improper seal. Kits from BSAMZO and AUTOMAJOR mitigate this by providing both 18mm and 20mm options.
Overlooking OEM Part Number Specificity
Relying solely on visual inspection or generic 'fits Honda' claims can be misleading. Automotive replacement transmission washers are designed to precise OEM specifications. For instance, the 90471-PX4-000 part number is consistently referenced by brands like DCWecher and AOIT for 18mm transmission drain plugs. Similarly, BSAMZO and AUTOMAJOR specifically list both 90471-PX4-000 and 94109-20000. Neglecting to cross-reference the exact OEM part number for your specific vehicle and drain plug can result in a washer that is either too thick, too thin, or incorrectly sized, compromising the seal.
Assuming One Washer Type for All Fluid Changes
Many vehicle owners might mistakenly believe a single type of washer will suffice for all fluid changes. However, as seen with products from BSAMZO and AUTOMAJOR, specific washers are often designated for 'Transmission Fluid' and 'Rear Differential Oil Drain Plug.' These different applications can sometimes imply slightly different material properties or crush characteristics for optimal sealing in their respective environments. Using a washer intended for a transmission fluid drain on a differential, or vice-versa, without confirming compatibility, can lead to sub-optimal sealing performance and potential leaks.