Mudder aluminium crush washers for Toyota oil drain plug — 100-pack, 12mm ID × 21mm OD × 1.8mm, blue anodized seal

These blue-anodized aluminum crush washers are designed as economical, high-volume replacements for oil drain plug gaskets on compatible Toyota models. Sold in a pack of 100, they provide a steady supply for routine oil changes and workshop use. The lightweight metal construction compresses to form a tight seal between the drain plug and oil pan, helping reduce seepage when properly installed.

Which vehicles and drain plugs will these washers fit?

The Mudder crush washers are sized for drains that accept a 12 mm inner diameter and 21 mm outer diameter gasket with 1.8 mm thickness. They are commonly used as replacements for OEM part number 90430-12031 and match the dimensions found on many Toyota oil pans. Always verify your vehicle’s drain plug and OEM part number before purchasing to ensure compatibility.

• Fits drains requiring 12 mm ID × 21 mm OD × 1.8 mm thickness gaskets
• Compatible with part reference 90430-12031 on many Toyota models
• Suitable for routine oil changes and service centers needing bulk supply

How do these aluminum crush washers perform during oil changes?

When installed correctly, the aluminum material deforms slightly to fill any microscopic gaps between the plug and pan, creating a mechanical seal. They are intended for one-time compression per oil change; replace the washer each time you remove the drain plug to maintain a reliable seal. As with all crush washers, avoid overtightening the drain plug to prevent damage to the gasket or mating surfaces.

• Compresses to form a tight mechanical seal at the drain plug
• Designed for single-use replacement on each oil change
• Works best when torque specs are followed to avoid over-compression

What are the material and quality details?

These crush washers are stamped from aluminum and finished in a blue anodized or coated appearance that aids corrosion resistance. Aluminum offers a balance of malleability—necessary for the crush action—and corrosion tolerance for long-term storage prior to use. The package of 100 is aimed at those who prefer bulk spares for multiple vehicles or frequent maintenance schedules.

• Material: aluminum for controlled deformation and corrosion resistance
• Finish: blue color for easy identification in a parts bin
• Pack size: 100 pieces to support workshops or regular maintenance

Who is this for? These Mudder crush washers are ideal for DIY mechanics, small repair shops, fleet managers, and Toyota owners who change oil regularly and want a reliable, economical supply of correctly sized drain plug gaskets. If you maintain multiple cars or prefer replacing the washer every service, the 100-piece pack reduces repeat ordering and ensures you have the correct size on hand. Always check your vehicle’s drain plug dimensions and OEM reference before installation to confirm fit.