Dorman Metal Heater Hose Connector for Cadillac/Chevrolet/GMC — 800-414HP Metal OE-Fix, Pressure-Tested Durable Replacement

The Dorman 800-414HP is a metal replacement heater hose/coolant hose connector engineered to replace brittle plastic OE parts and provide a longer-lasting repair for select Cadillac, Chevrolet and GMC models.

Over time the original plastic heater hose connector can become weak from heat cycles, vibration and abrasion, eventually cracking and leaking. Rather than installing another plastic piece, the Dorman OE FIX metal connector upgrades the vulnerable junction with a rugged, pressure-tested component made to match factory fit and function while resisting the common failure modes of plastic fittings.

How does this metal connector reduce future leaks?

The 800-414HP is made from durable metal that withstands heat, mechanical wear and repeated coolant pressure better than typical plastic connectors. Its construction reduces the chance of cracking, splitting or disconnecting under stress.

• Metal body resists heat-related brittleness common in plastic
• Engineered connection surfaces for secure hose grip
• Pressure-tested to ensure reliable sealing under normal system loads

Will this part fit my vehicle and install like the OEM piece?

Dorman manufactures this connector to precise dimensions so it replaces the original unit directly on compatible models. Use the vehicle lookup tool and Confirmed Fit information on the product page to verify compatibility before ordering.

• Designed to match factory mounting and hose attachment points
• Check the product’s Confirmed Fit bar and any fitment notes for specifics
• Direct-replacement form means typical installation tools and clamps are used

What performance testing and durability features were used?

The OE FIX connector goes through performance and pressure testing intended to simulate everyday operating conditions so it can exceed the service life of the original plastic part. That testing helps ensure the connector maintains integrity during normal thermal cycling and coolant pressure variations.

• Pressure-tested for leak resistance under system loads
• Material selection targets higher abrasion and heat tolerance
• Manufactured to consistent dimensional tolerances for dependable sealing

How do I confirm fit and complete the replacement correctly?

Before purchasing, enter your vehicle details in the garage tool and review any fitment icons or clarifications. During installation, replace any worn hose clamps and verify the hose seats fully on the connector for a secure seal.

• Use the online Confirmed Fit check for vehicle-specific compatibility
• Inspect hoses and clamps; replace if damaged or corroded
• Tighten clamps to manufacturer torque or secure until no leaks are present

Who is this for: The Dorman 800-414HP is aimed at technicians, DIY mechanics and vehicle owners who want a more durable solution than the factory plastic heater hose connector. It's a practical upgrade for anyone repairing coolant or HVAC hose connections on compatible Cadillac, Chevrolet and GMC models who prefers a metal OE FIX part to extend service life and reduce repeat repairs.