10 PCS Oil Drain Plug Gasket 14mm Copper Crush Washer - Reliable Seal

In this review the 10 PCS Oil Drain Plug Gasket set is examined as a simple, low-cost maintenance item for anyone who performs routine oil changes or services differentials and transfer cases. The biggest reason to buy is straightforward: these copper crush washers provide a reliable metal-to-metal seal that reduces the chance of oil leaks and protects critical drivetrain components. For DIY mechanics and professional technicians who want a dependable replacement that resists corrosion and wear, this pack is a practical addition to a toolbox.

Key Features

• Practicality: Designed for use on differentials and transfer cases, the gasket helps prevent liquid and gas leaks that could damage drivetrain components.
• Durable Copper Construction: Made from copper with surface annealing and acid washing treatment to improve corrosion resistance for long-term use.
• High Hardness: With a hardness around 550HV, the washer is wear-resistant and holds its shape under repeated service cycles.
• Better Sealing Performance: Copper conforms to mating surfaces and maintains a tight seal longer than many steel or rubber alternatives.
• Value Pack: The 10-piece quantity keeps spares on hand so you can replace crushed washers during routine maintenance without extra trips for parts.

Who It's For

The set is ideal for home mechanics, service shops, and fleet maintenance where regular oil drain plug gasket replacement prevents leaks in differentials, transfer cases, and other oil reservoirs. The OEM compatibility means it fits applications that specify the referenced OEM PN, making it useful when matching original parts is important.

Those who should look elsewhere include owners needing a different material or custom size for nonstandard fittings, or users who require a single, exact-count specialty washer rather than a multi-pack. If a vehicle requires a rubber or composite seal specified by the manufacturer, that specified material should be used instead.

Pros & Cons

Pros

• Good corrosion resistance from annealed and acid-washed copper for durable field performance.
• Solid sealing ability that conforms to interfaces and helps prevent oil leaks over time.
• Hardness and wear resistance help the washer retain effectiveness through multiple uses.
• Pack of 10 provides spare parts for quick on-the-spot maintenance.

Cons

• Copper crush washers are single-use by design, so you should plan to replace them at each service rather than attempting to reuse them.
• Only one size is supplied, so it may not fit every vehicle drain plug application without checking the OEM reference.

Specifications

Material	Copper
Quantity	10 pieces
Size	14mm drain plug gasket
Surface Treatment	Annealed and acid washed
Hardness	Approximately 550HV
OEM Compatibility	Compatible with OEM PN 007603-014106

Our Verdict

The 10 PCS 14mm copper oil drain plug gaskets are a practical, cost-effective choice for anyone performing routine oil or differential service. Their treated copper construction and high hardness deliver reliable sealing and corrosion resistance, and the 10-piece pack keeps spares handy. Buy this if you need dependable copper crush washers that match the OEM reference; choose a different material or size only if your vehicle specifically calls for it.

Frequently Asked Questions

Are these reusable?
Answer. Copper crush washers are intended to deform to make a seal and are best replaced at each service rather than reused.

Will this fit my drain plug?
Answer. These are 14mm washers compatible with the OEM PN listed; verify your vehicle service manual or existing washer size before purchasing.

How do they resist corrosion?
Answer. The washers have an annealed and acid-washed surface treatment that improves corrosion resistance compared with untreated metal.