Honda 20mm OEM Crush Washers for Rear Differential & Transmission, Bag of 10 — Factory Fit and Single-Use Seal

Honda genuine 20mm crush washers—factory replacement washers sold in a bag of 10 for rear differential, transfer case, and manual transmission drain/fill plugs.

These are Honda OEM crush (crush-style) washers sized for 20 millimeter drain and fill plugs. Manufactured to the same specifications as the parts installed at the factory, they’re intended for one-time use and should be swapped whenever the associated fluid is changed. The set contains ten washers, providing enough replacements for multiple service intervals or several vehicles.

Which Honda components accept these 20mm crush washers?

These washers are sized and shaped to match several Honda driveline and transmission service points. They work on rear differential plugs, transfer case plugs on compatible models, and manual transmission fill plugs where a 20mm washer is specified.

• Rear differential drain and fill plugs on 4WD CR-V, Element, and Crosstour models
• Rear differential fill plugs and transfer case drain/fill plugs on Ridgeline and Pilot
• Manual transmission fill plugs where factory service calls for a 20mm crush washer
• OEM fit and finish to maintain proper sealing during service

Why should I use genuine Honda crush washers instead of aftermarket alternatives?

Factory washers are produced to match the original plug geometry and compressibility, reducing the risk of leaks and over-tightening. Using OEM washers helps preserve the designed sealing characteristics and can prevent rework or repeated seal failures.

• Exact dimensions and material hardness match factory specifications
• Minimizes risk of oil or gear fluid seepage after service
• Reduces chance of plug head damage from improper sealing
• Sold in a multi-pack for convenience and cost-effective maintenance

How do I install and when should these crush washers be replaced?

Installation is straightforward: remove the old washer when changing fluid, seat a new OEM washer on the plug, and torque to the vehicle’s specified value. Because crush washers deform to create a seal, they are single-use components and must be replaced each time the plug is removed.

• Replace washer whenever differential, transfer case, or transmission fluid is drained
• Clean mating surfaces before fitting a new washer to ensure proper sealing
• Torque plug to Honda-specified value to avoid under- or over-compression
• Keep spare washers on hand—this bag contains ten replacements

What size and quantity are included, and how can I confirm fitment?

Each washer in this package is 20 millimeters in diameter and the bag includes ten OEM Honda washers. Verify fitment by checking your vehicle’s service manual or matching the washer size to the plug head on your vehicle before installation.

• Washer diameter: 20 mm (factory spec)
• Quantity: 10 crush washers per bag
• Intended as one-time-use sealing washers for drain/fill plugs
• Cross-check against your vehicle VIN or service manual for exact application

Who is this for? This pack is ideal for Honda owners, independent mechanics, and fleet technicians who perform routine oil, differential, transfer case, or manual transmission maintenance. If you service multiple Honda vehicles or prefer OEM-fit components to preserve factory sealing performance, these 20mm Honda crush washers offer a ready supply of correctly sized, single-use seals to complete professional-quality service.