An oil drain plug gasket helps create a tight seal between the drain plug and the oil pan, which can reduce seepage after an oil change. Without a good seal on vehicles that require one, you may notice slow drips over time.

• Prevents leaks: The gasket fills small gaps on the mating surfaces.
• Protects threads: It can help you achieve the correct torque without overtightening.
• Different types: Single-use “crush” washers (often aluminum or copper) deform once, while some plugs use reusable rubber/metal designs.

Not every engine uses the same style, so it’s a good idea to follow your owner’s manual and match the gasket type and size your vehicle specifies.

Replacement timing can vary by design and manufacturer guidance. Many vehicles that use crush washers recommend installing a new washer at each oil change because it’s designed to deform once. Reusable rubber/metal styles may last longer but still benefit from a quick inspection every service.

• Replace sooner if: You see seepage, the washer looks flattened, cracked, or torn.
• Check your manual: Follow the interval, gasket type, and torque spec your vehicle calls for.
• Keep spares: Having a few on hand can help during DIY oil changes.

Using the correct gasket style and tightening to the recommended torque can help maintain a reliable seal, but results may vary with vehicle condition and usage.

Pricing can vary based on several factors. While we don’t quote prices here, knowing what influences cost can help you choose confidently.

• Material: Options like aluminum, copper, rubber, fiber, or nylon can differ in price and performance.
• Quantity: Single pieces versus multi-packs or assortment kits affect the per-gasket value.
• Fitment: Vehicle-specific gaskets may cost differently than universal sizes.
• Bundle items: Some drain plugs include a gasket, which can change overall value.

For current pricing and availability, browse Walmart.com product pages and use filters for size and fitment. You can also choose convenient fulfillment options like pickup or delivery where available.

A drain plug gasket—also called a drain plug washer—is a thin sealing ring that sits under the drain plug head. When the plug is tightened, the gasket compresses to help create a fluid-resistant seal between the plug and the pan or case.

• Where it’s used: Common on engine oil pans and sometimes transmissions or differentials.
• How it works: It compensates for small surface irregularities and helps reduce seepage after service.
• Styles: Flat crush washers and molded styles are both common.

Designs vary by vehicle, so matching the correct size and type to your application is important for a reliable seal.

The right size usually matches your drain plug’s diameter and the sealing surface on the pan.

• Check documentation: Your owner’s manual or service guide typically lists the plug size (e.g., M12, M14, M16 or 1/2 in, 9/16 in).
• Match the inner diameter: The gasket’s inside opening should fit snugly around the plug’s shank.
• Confirm outer diameter and thickness: Ensure it sits fully on the pan’s sealing face without overhanging.
• Use fitment tools: On Walmart.com, filter by vehicle year/make/model or by size specs to narrow options.

If you service multiple vehicles, a multi-size kit can be convenient. When in doubt, compare the new gasket to the one you’re replacing.