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Product Introduction
EGR Cooler (OE Ref: 14735EC00D)
This EGR cooler is a premium OEM replacement part specifically engineered for mainstream commercial vehicles and diesel engines in European and American markets. As a core component of the engine emission control system, it functions by circulating engine coolant to lower the temperature of exhaust gases recirculating into the intake system. This process effectively reduces the formation of Nitrogen Oxides (NOx), ensuring vehicle compliance with stringent environmental regulations.
Precision OE Fitment
This product is a direct replacement for the engine cooling systems of specific Nissan and Infiniti models, including the Patrol, Navara, QX56, and QX80. Manufactured using high-precision molds, it ensures 100% sealing and fitment with original oil and water interfaces, effectively eliminating the risk of leaks.
High-Efficiency Heat Dissipation Structure
Craftsmanship: Utilizing Vacuum Brazing technology, which significantly improves heat dissipation efficiency compared to traditional soldering.
Design: The internal fin density is optimized to maximize the heat exchange area within a limited space. Even under heavy loads or high temperatures, it maintains engine oil temperature within the optimal operating range (90°C - 110°C), preventing premature oil aging.
Ultimate Corrosion Resistance & Durability
Designed to withstand high-salinity climates (such as European winter road salt or US coastal areas) and harsh road conditions, our coolers feature specialized surface treatments. Having passed the 144-hour Neutral Salt Spray (NSS) test, their corrosion resistance far exceeds industry standards, effectively extending service life.
Performance & Emission Control
Efficient Heat Exchange: Adopts an optimized shell-and-tube structure that utilizes engine coolant to rapidly dissipate exhaust heat, significantly lowering exhaust temperature and improving engine volumetric efficiency.
Emission Reduction: Precisely controls recirculated exhaust gas temperature to help vehicles pass Euro IV, Euro V, and stricter emission tests. It is the ideal solution for resolving Malfunction Indicator Lights (MIL) caused by low EGR cooling efficiency.
Carbon Build-up Prevention: The internal flow channels are optimized to effectively reduce soot deposition compared to inferior aftermarket products, extending the unit's lifespan.
Nissan Teana: J32 (2008-2012) 2.5L/3.5L
Nissan Murano: Z51 (2008-2014) 3.5L
Nissan Quest: E52 (2011-2017)
Infiniti: EX35 / FX35 / G35 Series
Diesel Applications: Compatible with various Nissan models equipped with the YD25DDTI 2.5L Diesel Engine.
Technical Parameters
Application Scenarios & Use Cases
Heavy-Duty Towing & Hauling (Australian & European Farms/Construction)
Scenario: Towing caravans, horse trailers, or transporting heavy construction materials over long distances on highways or in mountainous terrain.
Product Value: Under these high-load conditions, engine exhaust temperatures can reach extreme levels. This cooler significantly reduces the temperature of gases re-entering the cylinders, preventing thermal degradation and power loss. It ensures sustained and stable power output during uphill climbs or heavy hauling.
Compatible Models: Nissan Navara D40 (Pickup).
Off-Roading & 4x4 Overlanding (North America & Middle East Deserts)
Scenario: Extended operation in low-speed, high-torque off-road conditions, such as rock crawling or sand dune driving.
Product Value: Off-road driving often results in poor heat dissipation, increasing the risk of engine knocking. The EGR cooler effectively lowers peak combustion chamber temperatures, protecting the engine from overheating and damage in extreme environments.
Compatible Models: Nissan Pathfinder R51 (SUV) & Navara D40 4x4 variants.
Urban Commuting & Stop-and-Go Traffic (European Cities)
Scenario: Engines idling or running at low speeds for prolonged periods in congested city traffic.
Product Value: The EGR system operates frequently in this mode. A failing cooler can lead to excessive intake temperatures, incomplete combustion, black smoke, and carbon buildup. Installing a high-efficiency cooler maintains combustion efficiency and ensures exhaust emissions meet local inspection standards (such as MOT or TÜV).
Compatible Models: Nissan Navara D40 (Rear-Wheel Drive).
Aftermarket Replacement & Repair (General Market)
Scenario: Replacing an original cooler that has failed due to aging, internal cracks, clogging, or leaks (symptoms typically include coolant loss, white smoke, or power loss).
Product Value: As a direct replacement for OEM parts (OES Numbers: 14735-EC00A/B/C), this unit facilitates rapid vehicle repair, restores proper EGR system function, and prevents the engine warning light from illuminating.
Special Note: Specifically compatible with YD25DDTI engine models manufactured between 2005 and 2015.
Installation Guide
Step 1: Drain Fluids
Drain the engine coolant or oil from the system.
Step 2: Remove Old Unit
Remove the old EGR cooler. Note: Hoses may be stuck; use a specialized tool to gently twist and detach them.
Step 3: Install New Cooler
Install the new EGR cooler.
Step 4: Connect Lines
Connect the associated piping and lines.
Step 5: Refill & Bleed
Refill the system with fresh fluid and bleed any air pockets.
Step 6: Pressure Test & Verify
Perform a pressure test and verify the installation.
Frequently Asked Questions
Q1: How is the heat dissipation efficiency of this cooler? Is there a risk of leaking?
A:Heat Dissipation Efficiency: Our design utilizes multi-layer flat tube technology, which increases the heat dissipation surface area by 15% compared to standard aftermarket parts. This ensures rapid heat removal from the engine even under high-load conditions.
Leak Prevention: Every unit undergoes 100% airtightness testing (using nitrogen) before leaving the factory. This guarantees zero leakage in extreme cold, high-temperature, or high-pressure environments, effectively preventing coolant emulsification or loss caused by poor sealing.
Q2: Do I need to replace other parts when installing this cooler?
A:Package Contents: Our package includes the EGR cooler core and necessary gaskets.
Professional Advice: Since installing the EGR cooler involves the exhaust system, we strongly recommend replacing the associated sealing gaskets and cleaning the EGR valve body during installation. This ensures there is no exhaust gas leakage at the connection points and extends the service life of the new part.
Q3: Is this product a Tube-and-Band or Tube-and-Fin structure?
A: This model (14735EC00D) utilizes a Tube-and-Fin structure combined with corrugated fins. This design offers low wind resistance and a large heat dissipation area, making it particularly suitable for the dual demands of engine cooling performance and fuel economy in European and American markets.
