like 2.0T A3 06K 145 702 K 06K 145 702 Q 06K 145 702 R 06K 145 702 T 06K 145 722 G 06K 145 722 K 06K 145 722 L IHI IS20 - Longitudinal - Mid output engines, like 2.0T A4 06L 145 702 06L 145 702 D 06L 145 702 F 06L 145 702 M 06L 145 702 P 06L 145 702 Q 06L 145 702 R 06L 145 722 B 06L 145 722 C 06L 145 722 D 06L 145 722 E 06L 145 722 F 06L 145 722 G 06L 145 722 L 06L 145 722 M IHI IS38 - Transverse - High output engine, like 2.0T S3, Golf R 06K 145 702 J 06K 145 702 M 06K 145 702 N 06K 145 722 A 06K 145 722 H 06K 145 722 N 06K 145 722 P 06K 145 722 S 06K 145 722 T 06K 145 874 F 06K 145 874 N Waterpump/thermostat A lot of people driving a Golf 7 R/GTI have been reporting failing thermostat housings. Most of them are being replaced under warranty by VW. This is most likely due to the plastic housing, it's recommended to install an uprated aluminium one. Five-cylinder petrols 2.5 R5 20v TFSI [Audi TTRS, RS3, RSQ3 & quattro Concept] (EA855 and EA855 evo) An all-new engine designed by AUDI AGs high-performance subsidiary Audi Sport GmbH (formerly quattro GmbH), harking back to the original turbocharged five cylinder Audi engines in the "Ur-" Audi Quattro of the 1980s. A world first for a petrol engine, its cylinder block is constructed from compacted vermicular graphite cast iron (GJV/CGI) – first used in Audi's large displacement, high-performance Turbocharged Direct Injection (TDI) diesel engines. identification parts code prefix/variant: 07K3; ID code: CEPA, CEPB, CTSA, CZGA, CZGB, DAZA, DNWA engine displacement & engine configuration inline five engine (R5/I5); bore x stroke: , stroke ratio: 0.89:1 – undersquare/long-stroke, 496.1 cc per cylinder; cylinder spacing, 144 degree firing interval, firing order: 1-2-4-5-3, compression ratio: 10.0:1 cylinder block & crankcase GJV-450 compacted vermicular graphite cast iron (GJV/CGI); six main bearings, two-part cast aluminium alloy horizontal-baffled oil sump, simplex roller chain-driven oil pump, die-forged steel crankshaft, forged steel connecting rods, cast aluminium alloy pistons (weight, each, including rings and gudgeon pin: ) cylinder head & valvetrain cast high hot-strength aluminium alloy, modified inlet duct geometry for high tumble values providing superior knock resistance, four valves