Quick view Details AFE | sku: 10-10121 AFE OEM High Performance Replacement Air Filter (Pro 5R Oil) 10-10121, 2010-2012 Audi S4 MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view Details AFE | sku: 11-10121 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view Details K&N | sku: e-1987-2 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 MSRP: Now: $89.99 Add to Cart Compare Quick view AFE | sku: 10-10121 AFE OEM High Performance Replacement Air Filter (Pro 5R Oil) 10-10121, 2010-2012 Audi S4 AFE OEM High Performance Replacement Air Filter (Pro 5R Oil) 10-10121, 2010-2012 Audi S4 aFe MagnumFLOW Drop In Replacement Filters: Constructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock... MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view AFE | sku: 11-10121 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 aFe MagnumFLOW Drop In Replacement Filters: Constructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock paper... MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view K&N | sku: e-1987-2 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N Drop-In High-Flow Air Filter: K&N Replacement High-Flow Air Filters are The Original High-Flow Air Filter. Since 1969 K&N Engineering has been designing,... MSRP: Now: $89.99 Add to Cart Compare Compare Selected × OK
Quick view Details AFE | sku: 11-10121 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view Details K&N | sku: e-1987-2 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 MSRP: Now: $89.99 Add to Cart Compare Quick view AFE | sku: 10-10121 AFE OEM High Performance Replacement Air Filter (Pro 5R Oil) 10-10121, 2010-2012 Audi S4 AFE OEM High Performance Replacement Air Filter (Pro 5R Oil) 10-10121, 2010-2012 Audi S4 aFe MagnumFLOW Drop In Replacement Filters: Constructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock... MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view AFE | sku: 11-10121 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 aFe MagnumFLOW Drop In Replacement Filters: Constructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock paper... MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view K&N | sku: e-1987-2 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N Drop-In High-Flow Air Filter: K&N Replacement High-Flow Air Filters are The Original High-Flow Air Filter. Since 1969 K&N Engineering has been designing,... MSRP: Now: $89.99 Add to Cart Compare Compare Selected × OK
Quick view Details K&N | sku: e-1987-2 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 MSRP: Now: $89.99 Add to Cart Compare Quick view AFE | sku: 10-10121 AFE OEM High Performance Replacement Air Filter (Pro 5R Oil) 10-10121, 2010-2012 Audi S4 AFE OEM High Performance Replacement Air Filter (Pro 5R Oil) 10-10121, 2010-2012 Audi S4 aFe MagnumFLOW Drop In Replacement Filters: Constructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock... MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view AFE | sku: 11-10121 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 aFe MagnumFLOW Drop In Replacement Filters: Constructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock paper... MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view K&N | sku: e-1987-2 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N Drop-In High-Flow Air Filter: K&N Replacement High-Flow Air Filters are The Original High-Flow Air Filter. Since 1969 K&N Engineering has been designing,... MSRP: Now: $89.99 Add to Cart Compare Compare Selected × OK
Quick view AFE | sku: 10-10121 AFE OEM High Performance Replacement Air Filter (Pro 5R Oil) 10-10121, 2010-2012 Audi S4 AFE OEM High Performance Replacement Air Filter (Pro 5R Oil) 10-10121, 2010-2012 Audi S4 aFe MagnumFLOW Drop In Replacement Filters: Constructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock... MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view AFE | sku: 11-10121 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 aFe MagnumFLOW Drop In Replacement Filters: Constructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock paper... MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view K&N | sku: e-1987-2 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N Drop-In High-Flow Air Filter: K&N Replacement High-Flow Air Filters are The Original High-Flow Air Filter. Since 1969 K&N Engineering has been designing,... MSRP: Now: $89.99 Add to Cart Compare Compare Selected × OK
Quick view AFE | sku: 11-10121 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 AFE High Performance Replacement Air Filter (Pro Dry S) 11-10121, 2010-2012 Audi S4 aFe MagnumFLOW Drop In Replacement Filters: Constructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock paper... MSRP: $99.74 Now: $79.79 Add to Cart Compare Quick view K&N | sku: e-1987-2 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N Drop-In High-Flow Air Filter: K&N Replacement High-Flow Air Filters are The Original High-Flow Air Filter. Since 1969 K&N Engineering has been designing,... MSRP: Now: $89.99 Add to Cart Compare Compare Selected
Quick view K&N | sku: e-1987-2 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N High Performance Replacement Air Filter E-1987, 2010-2012 Audi S4 K&N Drop-In High-Flow Air Filter: K&N Replacement High-Flow Air Filters are The Original High-Flow Air Filter. Since 1969 K&N Engineering has been designing,... MSRP: Now: $89.99 Add to Cart Compare Compare Selected