Dorman 800-413HP Metal Heater Hose Connector Compatible

The Dorman 800-413HP is a metal HVAC heater hose quick connector designed to replace brittle plastic OE fittings for a longer-lasting, leak-resistant repair on select Cadillac, Chevrolet and GMC vehicles.

Original plastic heater hose quick connectors can become brittle from heat cycles and abrasion, leading to cracks, leaks or sudden detachment from the hose. Rather than replacing a failed plastic connector with another plastic part, the Dorman 800-413HP OE FIX uses a rugged metal construction engineered to match factory dimensions while providing superior resistance to heat and wear. This connector is pressure-tested and manufactured to precise tolerances so it installs cleanly and helps reduce the chance of repeat failure.

How does the Dorman metal connector improve over the original plastic fitting?

The Dorman 800-413HP swaps the original brittle plastic for a metal body that tolerates higher temperatures and resists abrasion from hose movement. The stronger material reduces the risk of cracking and hose separation under normal engine heat and vibration.

• Metal construction resists heat-related brittleness.
• Engineered to OEM dimensions for smooth installation.
• Pressure-tested to confirm leak resistance.
• Designed to reduce repeat repairs from connector failure.

Will this connector fit my Cadillac, Chevrolet or GMC?

The 800-413HP is built to match the factory connector on specific model years and trims of Cadillac, Chevrolet and GMC vehicles. Always use the product’s fitment tool on the listing page to confirm compatibility with your VIN or vehicle selection before ordering.

• Check the Confirmed Fit bar on the product page.
• Enter vehicle details in the garage tool for accurate results.
• Hover over any blue “i” icons to read fitment notes and exceptions.
• Contact support if your vehicle shows an additional verification note.

How is installation and reliability verified?

Dorman manufactures this OE FIX connector to strict dimensional tolerances so it functions like the factory part while offering improved durability. The part undergoes pressure testing to ensure it seals reliably when installed, and the metal body withstands the same hose-clamping forces used in OEM assemblies.

• Precision manufacturing for seamless fitment.
• Pressure-tested for leak control under operating conditions.
• Compatible with standard heater hose clamps and installation procedures.
• Manufacturer instructions and fit notes available on the product page.

What should I expect after replacing the connector?

Once installed correctly, the Dorman metal connector should restore a secure hose connection and reduce the likelihood of future failures at the same junction. While no part can guarantee indefinite life, the upgraded material and pressure-tested design target a noticeably longer service interval compared with the original plastic counterpart.

• Reduced risk of heat-related cracking.
• Improved resistance to abrasion and hose movement.
• Maintains OEM fit and routing for straightforward replacement.
• May lower long-term maintenance frequency at the repair location.

Who is this for? The Dorman 800-413HP is ideal for DIY mechanics and professional technicians who need a reliable replacement for a failed heater hose quick connector on supported Cadillac, Chevrolet and GMC models. Choose this OE FIX when you want a more robust repair than the original plastic part, while maintaining factory fitment and straightforward installation. Remember to confirm fitment with your vehicle details before purchasing to ensure correct application.