Dorman Autograde 3/16 Inch Hard Vacuum Tubing Connector Restrictor for Automotive Emissions Systems 493-021

3/16 inch hard vacuum tubing connector restrictor by Dorman used to replace cracked or collapsed vacuum lines in automotive emissions and engine management systems.

Built to meet the manufacturer's design intent for reliable service, this connector is constructed from durable hard plastic to withstand underhood heat and chemical exposure while maintaining a secure fit on standard vacuum tubing.

Key Features

• Designed specifically for 3/16 inch inner diameter hard vacuum tubing
• Functions as a flow restrictor to regulate vacuum pressure within the system
• Manufactured by Dorman Autograde for consistent quality and fit
• Compatible with various automotive vacuum and emissions applications
• Sold as a 10-piece pack for multiple repairs or inventory stocking
• Direct replacement for Weatherhead 1950 and Edelmann 715300 part numbers

Benefits

• Restores proper vacuum levels to ensure optimal engine performance and idle stability
• Prevents vacuum leaks that can trigger check engine lights or cause rough running
• Durable construction reduces the risk of repeat failures common with aged rubber or soft tubing
• Cost-effective bulk pack allows for immediate replacement during routine maintenance
• Direct-fit design simplifies installation without requiring special tools or modifications
• Helps maintain compliance with emissions standards by sealing the vacuum system effectively

Application

Ideal for automotive technicians and DIY mechanics repairing broken vacuum lines on cars, trucks, and SUVs. Commonly used in brake booster lines, PCV systems, fuel pressure regulators, and HVAC control circuits where precise vacuum restriction is required.

Fitment Notes

• Universal fit for vehicles utilizing 3/16 inch hard vacuum tubing
• Verify existing line diameter and flow requirements before installation
• Replaces cross-reference part numbers Weatherhead 1950 and Edelmann 715300

Why Choose Dorman?

• Choosing Dorman aftermarket replacement parts is a smart way to restore your vehicle with confidence, thanks to a strong focus on fit, durability, and dependable performance. Dorman parts are engineered as direct-fit replacements designed to match OE form, fit, and function, helping ensure a smoother installation and reliable results. Built with quality materials and validated through testing, they're made to stand up to daily driving demands and help reduce the risk of repeat repairs. For a long-lasting fix you can trust, Dorman delivers proven aftermarket solutions that keep your vehicle operating the way it should.

What's in the Box

• 10 pieces of 3/16 inch hard vacuum tubing connector restrictors

Item Dimensions

• Package measures 3.2 inches by 2.4 inches by 1.5 inches with a weight of 0.1 lbs