Twenty-one uprated references for the Audi A3 8L 1.8T 20V 150hp, engine codes AGU, AQA, ARX, ARZ and AUM, built from 1996 to 2003. This is the only 8L page carrying all three sets of ZRP forged…Twenty-one uprated references for the Audi A3 8L 1.8T 20V 150hp, engine codes AGU, AQA, ARX, ARZ and AUM, built from 1996 to 2003. This is the only 8L page carrying all three sets of ZRP forged connecting rods for the EA113, including a long 147.2mm centre to centre set on a 20mm gudgeon pin that no other engine in the range repeats. The bottom end follows: forged pistons chosen on the option, ACL tri-metal big end and main bearings, ARP head studs and main studs, a COMETIC MLS head gasket in 82.0mm. On the head, SUPERTECH valves, springs, guides, stem seals and collets, CATCAMS mechanical cam followers and NGK spark plugs.