Dorman Autograde Brass Cup Engine Expansion Plug 34.3mm for Automotive Repair 565-104

Brass cup engine expansion plug 34.3mm by Dorman used to replace worn or leaking freeze plugs in automotive engines.

Built to meet the manufacturer's design intent for reliable service, this plug is constructed from quality brass materials engineered to resist corrosion and maintain a secure seal under operating conditions.

Key Features

• Constructed from durable brass for long-lasting performance
• Precise 34.3mm diameter with 0.497 inch height
• Designed to match original equipment form and function
• Validated through testing for dependable sealing
• Sold as a 10-piece bulk pack for multiple replacements
• Direct fit replacement for specified applications

Benefits

• Prevents coolant leaks caused by failed expansion plugs
• Restores engine cooling system integrity
• Reduces risk of repeat repairs with quality materials
• Ensures smoother installation with OE-matching dimensions
• Provides cost-effective solution with multi-pack quantity
• Backed by over a century of automotive expertise

Application

Ideal for mechanics and DIY enthusiasts performing engine cooling system repairs, block maintenance, or restoring vintage and modern vehicles requiring 34.3mm brass freeze plugs.

Fitment Notes

• Universal automotive application based on 34.3mm size requirement
• Verify original plug dimensions before purchase to ensure compatibility
• Compatible with vehicles requiring Pioneer part number EPC280-25

Why Choose Dorman?

• Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function
• Built with quality materials and validated through testing to stand up to daily driving demands
• Supported by a team of product experts in the United States

What's in the Box

• 10 pieces of Brass Cup Expansion Plugs

Item Dimensions

• Package: 3.7in x 2.4in x 2.2in
• Weight: 0.5lbs