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2018 Audi S4 Performance Parts

Looking for aftermarket parts to modify or upgrade your 2018 Audi S4? At Tunersports.com we carry a huge selection of the top name brand performance part parts and accessories for your S4.

Whether you have a 2018 Audi S4 in to Prestige trim we have you covered. From air filters to wheel and tire accessories we have 162 available to mod your S4, all with free shipping to the Continental US 48 States.

2018 S4 Parts:

Recently Added Audi S4 Aftermarket Parts:

IN STOCK Go Fast Bits VTA Valves T9480 GFB VTA Blow Off Valve 2022+ VW Golf R Mk8 / 2016+ Audi S4 B9 w/Continental Diverter $250.20 Details
IN STOCK Go Fast Bits DV+ Diverter Valves T9380 GFB Diverter Valve DV+ 2022+ VW Golf GTI/Golf R Mk8 (EA888) / 2018+ Audi RS5 B9 2.9TFSI $242.10 Details
IN STOCK - LOW aFe Power Converter 77-16414 aFe 16-23 Audi A4/A5 / 21-23 Audi A5 Quattro/A6 L4 2.0L (t) Sprint Booster V3 Power Converter $277.86 SALE Details
IN STOCK - LOW LIQUI MOLY Motor Oil - Top Tec 6200 22186 LIQUI MOLY 20L Top Tec 6200 Motor Oil SAE 0W20 $186.53 Details
IN STOCK - LOW BD Diesel Throttle Sensitivity Boost 1057942 BD Power Throttle Sensitivity Booster v3.0 - VW / Audi / Porsche $289.95 Details
IN STOCK MSS Suspension Sports Kits 02aAUDA45B9 MSS 15-21 Audi A4 / S4 / RS4 / A5 / S5 / RS5 Sports Full Adjustable Kit $1,415.50 Details
IN STOCK - LOW Bilstein B4 Series Shocks 24-275019 Bilstein 17-20 A4 & A4 Quat / 18-21 A5 Quat & A5 SB / 18-19 S4 / 18-19 S5 & S5 SB B4 OE Shock Front $178.00 Details
IN STOCK Bilstein B6 Series Shocks 26-296043 Bilstein B6 (DampTronic) 17-21 Audi A4 Allroad Rear Monotube Shock Absorber $310.00 Details
IN STOCK H&R Sport Springs 50357 H&R 17-20 Audi A4 Premium/A4 Premium Plus/A4 Prestige (2WD) B9 Sport Spring $296.21 Details
IN STOCK Stoptech Premium Carbon Brake Rotor 125.33137 Centric Premium High Carbon Brake Rotor $127.94 Details

Popular Audi S4 Aftermarket Parts:

IN STOCK Injen SP Intake SP3082WR Injen 18-19 Audi S4/S5 (B9) 3.0L Turbo Wrinkle Red Short Ram Intake $395.95 Details
IN STOCK EBC Redstuff Brake Pad Sets DP32254C EBC 2018+ Audi A4 Allroad Quattro 2.0L Turbo Redstuff Rear Brake Pads $114.05 Details
IN STOCK H&R Sport Springs 50357 H&R 17-20 Audi A4 Premium/A4 Premium Plus/A4 Prestige (2WD) B9 Sport Spring $296.21 Details
IN STOCK EBC Redstuff Brake Pad Sets DP32277C EBC 18-19 Audi S4 / S5 Redstuff Ceramic Low Dust Front Brake Pads $197.74 Details
IN STOCK EBC Yellowstuff Brake Pad Sets DP42277R EBC 2016+ Audi Q7 Yellowstuff Front Brake Pads $197.74 Details
IN STOCK Injen SP Intake SP3082WB Injen 18-19 Audi S4/S5 (B9) 3.0L Turbo Wrinkle Black Short Ram Intake $395.95 Details
IN STOCK H&R DR Wheel Adaptor 3055665SW H&R Trak+ 15mm DR Wheel Adaptor Bolt 5/112 Center Bore 66.5 Bolt Thread 12x1.5 REAR ONLY - Black $139.66 Details
IN STOCK EBC GD Sport Rotor Sets GD1846 EBC 12+ Audi A6 Quattro 3.0 Supercharged GD Sport Rear Rotors $299.76 Details
IN STOCK AWE Tuning AirGate Intake 2660-15032 AWE Tuning Audi B9/B9.5 S4/S5/RS5 3.0T Carbon Fiber AirGate Intake w/ Lid $995.00 Details
IN STOCK H&R DR Wheel Spacers 2055668SW H&R Trak+ 10mm DR Spacer Bolt Pattern 5/112 CB 66.5mm Bolt Thread 14x1.5 - Black $114.37 Details