EGR Cooler replacement for OE 03G131512AL. EGR Cooler (Exhaust Gas Recirculation Cooler) An EGR Cooler is a heat exchanger in diesel/gasoline engines that cools hot exhaust gases before recirculating them into the intake manifold. It lowers combustion temperatures, reduces NOx emissions, improves fuel efficiency, and protects engine components. Main materials • Heat exchange tubes/core: Ferritic stainless steel (high temperature & corrosion resistance) • Shell/body: Aluminum alloy or cast aluminum (lightweight, good thermal conductivity) • Seals & gaskets: High-temperature graphite or rubber Key functions • Cools exhaust gas (typically from 600–700°C to 150–250°C) • Reduces NOx formation • Improves combustion stability & fuel economy • Protects intake system from heat damage SUMEC part SMC-LQ-59, fits Audi. Verified OE fitment — request a fast quote.
03G131512AL EGR cooler — OE Cross Reference
Replacing 03G131512AL? This EGR cooler (SUMEC PN SMC-LQ-59) matches OE 03G131512AL on Audi applications, including Audi A3 / S3 / Sportback BMN, BUY 2.0 TDI (2004-2012). Verify the stamped OE before ordering.
Stainless-steel core, supplied OEM-grade.
Frequently asked questions
Is 03G131512AL correct for my vehicle? It fits Audi A3 / S3 / Sportback BMN, BUY 2.0 TDI (2004-2012) and related Audi applications. Verify via the OE stamped on your old EGR cooler.
How do I confirm before ordering? Compare the stamped OE to 03G131512AL and the port layout to your unit; send a photo of the old part with the OE number and we confirm.
Cross-references are confirmed per vehicle on request — send your OE, engine and chassis and we verify the matching SUMEC part.
Fitment verification
Match the stamped OE to 03G131512AL, confirm the engine, and compare port positions — Audi EGR coolers vary by engine variant, emission level and model year. Request a quote with your OE number, engine application, quantity and a photo of the old part for fitment confirmation. Trade terms available upon quotation.