OMIX 17901.03 OE Aluminum Heater Core 5/8" Inlet Outlet 1987-1995 Jeep Wrangler

Vehicle Fitment

• 1987-1995 Jeep Wrangler YJ (All Trims)

Fitment Notes

• Replaces OEM part number 56001459 - direct OE-specification replacement
• Inlet and outlet tube diameter: 5/8 inch - confirm heater hose diameter before installation
• Heater hoses and clamps are not included - source separately as needed
• Cooling system should be drained before heater core removal; flush and refill with fresh coolant after installation
• Professional installation recommended; heater core replacement requires partial dashboard or heater box disassembly on the YJ
• Sold individually - one heater core per package

Features

• All-aluminum core and tank construction provides excellent corrosion resistance in the coolant system environment and superior heat transfer characteristics versus older copper/brass designs - restoring full cabin heating output
• Direct OE-specification replacement - engineered to match the original YJ heater core dimensions (9-3/16" x 6-1/8" x 1-3/8" thick), inlet/outlet tube size (5/8"), and heater box mounting geometry for a straight drop-in installation without modification
• Restores proper cabin heating and defroster performance on YJ models suffering from heater core failure - common symptoms include coolant loss with no visible external leak, sweet smell inside the cabin, foggy windshield from coolant vapor, or wet carpet on the passenger side floor
• Meets or exceeds OEM quality specifications per Omix-ADA's manufacturing standard
• Backed by Omix-ADA's 5-year limited manufacturer's warranty

Specifications

• Part Number: 17901.03
• Replaces OEM Part Number: 56001459
• Construction: All-Aluminum Core and Tanks
• Core Dimensions: 9-3/16" x 6-1/8" x 1-3/8" thick
• Inlet / Outlet Tube Diameter: 5/8"
• Style: OE Style - Direct Fit
• Warranty: 5-Year Limited
• Sold As: Individually (1 heater core per package)

Included Components

• 1x Omix-ADA 17901.03 Aluminum Heater Core

Product Description

The Omix-ADA 17901.03 is a direct OE-specification replacement heater core for the 1987-1995 Jeep Wrangler YJ. The all-aluminum core and tank construction provides strong corrosion resistance in the coolant environment and excellent heat transfer - restoring full cabin heating and windshield defrost performance. At 9-3/16" x 6-1/8" x 1-3/8" thick with 5/8" inlet and outlet tubes, it matches the original YJ heater core dimensions and heater box mounting geometry for a direct drop-in installation without modification.

Common heater core failure symptoms on the YJ include gradual coolant loss with no visible external leak, a sweet coolant smell inside the cabin, a fogged windshield from coolant vapor entering the HVAC system, and wet or damp carpet on the passenger side floor from a coolant leak inside the heater box. Heater core replacement on the YJ requires partial heater box disassembly - drain the cooling system before removal and flush and refill with fresh coolant after installation. Replaces OEM part number 56001459 and is backed by Omix-ADA's 5-year limited manufacturer's warranty.