A-Premium Heater Core for Dodge Ram 1500/2500/3500 (2002–2009) — Aluminum Direct-Fit, Multi-Louver Fins

If your Dodge Ram’s heater is blowing cold air, leaking, or showing coolant spots, this A-Premium heater core is a direct-fit replacement designed to match original equipment dimensions and restore efficient cabin heating. Built from corrosion-resistant aluminum with high-density multi-louvered fins, the unit aims to improve heat transfer while resisting leaks under normal driving conditions.

Will this heater core fit my Ram model?

This core is matched to a range of Dodge Ram model years and configurations. Before ordering, confirm fitment using your vehicle’s year and model and compare reference numbers provided to your OEM parts list to ensure compatibility.

• Fits Dodge Ram 1500 (2002–2008) and 2500/3500 (2002–2009)
• Also fits Ram 4000 (2005–2008) and heavy-duty 4500/5500 series (2008–2010)
• Reference numbers: 99331, HT399331C, 5073971AA, 68004228AA, 68004228AB
• Use vehicle info in fitment module and review special notes before purchase

How does the construction affect performance and durability?

Constructed from aluminum, the core provides a balance of light weight, efficient thermal conductivity, and corrosion resistance. High-density multi-louvered fins increase surface area for quicker heat exchange, while precise end-tank and tube joins reduce the chance of coolant seepage.

• Aluminum body for better heat transfer and corrosion resistance
• Multi-louvered fins raise thermal surface area for faster warming
• Machined inlet/outlet diameters (5/8") for reliable hose connections
• Sealed joints designed to minimize leaks under standard operating pressures

What are the exact dimensions and connection details?

Dimensions and connection sizes are listed so you can verify physical clearance and hose compatibility before installation. These specs help ensure the replacement core sits correctly in the HVAC housing and mates cleanly to existing plumbing.

• Height: 12.40 inches; Width: 2.56 inches; Thickness: 1 inch
• Inlet diameter: 5/8 inch; Outlet diameter: 5/8 inch
• Compact rectangular profile to fit OEM heater box cavities
• Exact references included for cross-checking with factory parts

What warranty and support does A-Premium provide?

A-Premium backs this heater core with a one-year unlimited-mileage guarantee, reflecting confidence in manufacturing quality. Customer support is available for fitment questions and post-purchase issues to help you complete the replacement correctly.

• One-year unlimited-mileage guarantee from A-Premium
• Access to customer support for fitment verification and aftercare
• Sold as a direct-replacement part for compatible Dodge Ram models

Who is this for: This A-Premium heater core is intended for owners and technicians replacing a failing or leaking heater core in compatible Dodge Ram 1500, 2500, 3500, 4000, 4500, and 5500 trucks from the listed model years. It's a practical choice for those seeking an OEM-style aluminum replacement with improved fin density for faster cabin heating and a manufacturer-backed warranty. Always verify vehicle compatibility and reference numbers before purchase to ensure a smooth installation.