4Pcs EA113 Engine Pistons & Rings Φ20mm / 82.5mm 06D107066C for A4 2.0 TFSI BWA BPY Car Accessories Parts Replacement Material: strength cast aluminum with a hard anodized coating Design and Style: engineered to meet OEM specifications for a precise fit Usage and Purpose: optimized for A4 2.0 TFSI BWA BPY engines Shape and Size: piston diameter 82.5mm; pin diameter Φ20mm Performance and Property: STD 0.00 spec (no fit cylinder expansion), meeting 105℃ volatile matter ≤ standards Parts and Accessories: includes piston x1 set and piston ring x1 set This is a non-OEM replacement part.Any trademarks or model numbers cited are used strictly to demonstrate compatibility.