HIHIAV Engine Heater Inlet & Radiator Outlet Hose — Direct-Fit for GM V8s 2000–2014, Replaces OE 15834773/22884219

HIHIAV Engine Heater Inlet and Lower Radiator Outlet Hose Assembly is a direct-fit replacement hose set designed to restore coolant flow between the heater core and radiator on compatible GM V8 trucks and SUVs from 2000–2014.

This hose assembly replaces OE part numbers 15834773 and 22884219 and is engineered to match the fit and routing of the factory supply hose. It’s built to handle engine bay temperatures and coolant exposure while providing the correct length, bends, and connector ends for GM models including Chevy, GMC, Cadillac and Hummer H2 across a wide range of years and V8 displacements. The package includes the hose and gasket(s) in reinforced Bag+Box packaging to reduce shipping damage and ensure parts arrive intact.

Which vehicles and engines will this hose assembly fit?

This assembly fits many General Motors full-size trucks and SUVs with V8 engines from the early 2000s through mid-2010s. Compatibility covers specific model years and engine sizes for Chevy Silverado, Tahoe, Avalanche, Suburban; GMC Sierra and Yukon; Cadillac Escalade; and Hummer H2. Always verify fitment using your vehicle’s make, model, year and engine before ordering.

• Chevrolet Silverado/Tahoe/Suburban/Avalanche: multiple 4.8L, 5.3L, 6.0L and 6.2L V8 configurations (2000–2014 ranges).
• GMC Sierra/Yukon: compatible across 4.8L–6.2L V8 variants (2000–2014 ranges).
• Cadillac Escalade and Hummer H2: supported years and V8 sizes listed in product details.

How does this replacement hose compare to the original equipment part?

The HIHIAV assembly is manufactured to match factory shape, mounting points and connector types so it installs like the OE hose. Materials are chosen for coolant resistance and thermal stability to perform in the same environment as the original. This product is intended as a direct replacement rather than an aftermarket performance upgrade.

• Replaces OE part numbers 15834773 and 22884219 for direct compatibility.
• Factory-style bends and end fittings for correct routing and leak-free connections.
• Durable coolant-rated hose material to withstand temperature cycles and pressure.

What should I know about installation and packaging?

Installation is standard for coolant/heater hoses: drain coolant, remove clamps, swap the hose, install new gasket(s) if supplied, then refill and bleed the cooling system. HIHIAV packs gaskets in both a protective bag and boxed packaging to prevent loss or shipping damage. If you’re unsure about steps or torque specs, consult a repair manual or a trained technician.

• Includes gasket(s) packaged in Bag+Box to avoid missing pieces during shipping.
• Recommend coolant drain and system bleed to remove air pockets after install.
• Check clamps and surrounding hoses for wear while replacing this assembly.

Will this hose assembly prevent common heater/core leaks and failures?

Replacing a deteriorated or split heater inlet or radiator outlet hose removes a frequent source of coolant leakage and can restore proper heater and engine cooling circulation. However, if the heater core, radiator or other components are damaged, replacing the hose alone won’t resolve those issues. Inspect adjacent parts during replacement to catch additional wear.

• Addresses hose-origin leaks and degraded flexible sections causing coolant loss.
• Inspect heater core, clamps and mating surfaces for simultaneous service needs.
• Follow recommended coolant flush intervals to extend hose and system life.

Who is this for: This HIHIAV hose assembly is aimed at owners and independent repair shops working on GM full-size trucks and SUVs from 2000–2014 with V8 engines who need a reliable, direct-fit replacement for OE part numbers 15834773 and 22884219. It’s suitable for DIY mechanics comfortable with coolant system servicing and for professionals performing scheduled maintenance or repairing coolant leaks.