General description Rear Air Suspension Spring Bag for Audi Allroad Quattro A6 4F C6 is a high-performance suspension kit designed to enhance vehicle stability and comfort. This air suspension bag compensates for extra weight, keeping the vehicle level while towing or hauling, and prevents issues such as rear sagging and excessive tire pressure. Technical specifications Reference OE/OEM Numbers: 4F0616001J, 4F0 616 001 J, 4F0616001, 4F0 616 001, 4F0616001Q, 4F0 616 001 Q, 4F0616001K, 4F0 616 001 K Condition: Brand New Quantity: 1 piece (for the rear right or left) Compatibility and accessories Compatible with Audi A6 4F2, C6 models from 2004 to 2011, including various engine types such as 2.0 TDI, 2.0 TFSI, 2.4, 2.7 TDI, 3.0 TDI, 3.2 FSI, and 4.2 FSI. Also fits Audi A6 Allroad 4FH, C6 and Audi A6 Avant 4F5, C6 models from 2005 to 2011. Installation Professional installation is highly recommended. Instruction manual is not included. Usage Designed to replace original rear air springs