EGR Cooler Kit for International 4300 4400 (2004-2009) 7.6L 9.3L

Heavy-Duty Stainless EGR Cooler Kit for 2004-2009 International 4300,4400 (DuraStar NGV)

What it Does: The replacement EGR cooler kit drops exhaust gas temperatures before recirculation into the intake manifold on 2004-2009 International 4300 and 4400 trucks, preventing thermal overload and restoring closed-loop emissions integrity.

The Stock International 4300,4400 Cooler Core Fatigue

Factory round-style EGR coolers on the Navistar DT466 and DT570 suffer from severe thermal cycling. Continuous heat expansion causes internal tube-to-header weld cracking within the factory heat exchanger. Once cracked, pressurized coolant enters the exhaust stream, manifesting as excessive white exhaust smoke, rapid coolant loss without external puddling, elevated cylinder head temperatures, and diagnostic trouble codes such as low EGR flow or cooling system performance faults.

The Engineering Solution

Engineered to replace OEM part numbers 1871733C92 and 1871733C93, this direct-replacement assembly is constructed from high-grade, thick-wall stainless steel. Built to the standard 11.5-inch round-body dimension, it features reinforced internal passages designed to resist thermal shock, vibration fatigue, and internal soot accumulation. The comprehensive kit includes high-temp fluoroelastomer O-rings, mounting hardware, and exhaust gaskets to help ensure gas-tight and leak-free coolant sealing during commercial fleet operation.

What's Included

• 1 Stainless Steel Round-Style EGR Cooler
• 1 Coolant Transfer Tube
• 1 Mounting Bracket Clamp
• 2 Heavy-Duty Hose Clamps
• 1 Exhaust Ring Gasket
• 1 Triangle Flange Gasket
• 3 High-Temp O-Rings
• 3 Installation Bolts

Technical Specifications

Compatibility

• 2004-2009 International 4300 with Navistar DT466 7.6L
• 2004-2009 International 4300LP with Navistar DT466 7.6L
• 2004-2009 International 4400 with Navistar DT466 7.6L
• 2004-2009 International 4400LP with Navistar DT466 7.6L
• 2004-2008 International 4400 with Navistar DT570 / HT570 9.3L
• 2005-2007 International 4400LP with Navistar DT570 / HT570 9.3L

Frequently Asked Questions & Fitment Warnings

Does this fit the DuraStar NGV 4300,4400?

Yes, this is a direct fit for 2004-2009 International 4300 and 4400 models running the DT466 or DT570 engines using the 11.5-inch round cooler design; it does not fit square-style or late-generation MaxxForce EGR setups.

Do I need to bleed the cooling system after replacement?

Yes, completely drain the coolant prior to removal and perform a full cooling system vacuum refill and air bleed cycle after torquing all hardware to factory specs.

The International Fleet Standard

Medium-duty commercial haulers rely on consistent uptime and heavy-load pulling power; replacing a fatigued heat exchanger protects the cylinder head, turbocharger, and catalytic emissions system from severe hydro-lock and thermal fatigue.