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 parts and accessories for your S4.
Whether you have a 2018 Audi S4 in Premium Plus to Prestige trim we have you covered. From air filters to wheel and tire accessories we have 163 available to mod your S4, all with free shipping to the Continental US 48 States.
 IN STOCK aFe Scorcher Module 77-92005aFe 17-20 Audi A3 / 15-20 Audi A4 Scorcher High-Performance Ignition Coil $59.97 SALE
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IN STOCK - LOW aFe Ignition Coils 77-92005-MCaFe 19-23 Audi S4 / 19-23 Audi S5 SCORCHER High-Performance Ignition Coil $243.06 SALE
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 IN STOCK Go Fast Bits VTA Valves T9480GFB VTA Blow Off Valve 2022+ VW Golf R Mk8 / 2016+ Audi S4 B9 w/Continental Diverter $250.20
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 IN STOCK Go Fast Bits DV+ Diverter Valves T9380GFB Diverter Valve DV+ 2022+ VW Golf GTI/Golf R Mk8 (EA888) / 2018+ Audi RS5 B9 2.9TFSI $242.10
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 IN STOCK - LOW aFe Power Converter 77-16414aFe 16-23 Audi A4/A5 / 21-23 Audi A5 Quattro/A6 L4 2.0L (t) Sprint Booster V3 Power Converter $264.79 SALE
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 IN STOCK - LOW aFe Wheel Spacers 610-721003-BaFe CONTROL Billet Aluminum Wheel Spacers 5x112 CB66.6 18mm - Toyota GR Supra/BMW G-Series $105.12 SALE
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 IN STOCK - LOW Bilstein B4 Series Shocks 24-279451Bilstein 2017 Audi A4 B4 OE Replacement Shock Absorber - Front $178.00
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 IN STOCK - LOW BD Diesel Throttle Sensitivity Boost 1057942BD Power Throttle Sensitivity Booster v3.0 - VW / Audi / Porsche $289.95
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 IN STOCK - LOW MSS Suspension Sports Kits 02aAUDA45B9MSS 15-21 Audi A4 / S4 / RS4 / A5 / S5 / RS5 Sports Full Adjustable Kit $1,415.50
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 IN STOCK Bilstein B6 Series Shocks 26-296043Bilstein B6 (DampTronic) 17-21 Audi A4 Allroad Rear Monotube Shock Absorber $310.00
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IN STOCK Go Fast Bits DV+ Diverter Valves T9380GFB Diverter Valve DV+ 2022+ VW Golf GTI/Golf R Mk8 (EA888) / 2018+ Audi RS5 B9 2.9TFSI $242.10
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 IN STOCK Injen SP Intake SP3082WBInjen 18-19 Audi S4/S5 (B9) 3.0L Turbo Wrinkle Black Short Ram Intake |
 IN STOCK H&R Sport Springs 50357H&R 17-20 Audi A4 Premium/A4 Premium Plus/A4 Prestige (2WD) B9 Sport Spring $296.21
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 IN STOCK H&R DR Wheel Adaptor 3055665SWH&R Trak+ 15mm DR Wheel Adaptor Bolt 5/112 Center Bore 66.5 Bolt Thread 12x1.5 REAR ONLY - Black $139.66
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 IN STOCK Hawk Performance HPS 5.0 Brake Pad Sets HB865B.620Hawk 18-19 Audi S5 HPS 5.0 Front Brake Pads $175.49
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 $197.74
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 IN STOCK AWE Tuning AirGate Intake 2660-15032AWE Tuning Audi B9/B9.5 S4/S5/RS5 3.0T Carbon Fiber AirGate Intake w/ Lid $995.00
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 $299.76
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IN STOCK Go Fast Bits VTA Valves T9480GFB VTA Blow Off Valve 2022+ VW Golf R Mk8 / 2016+ Audi S4 B9 w/Continental Diverter $250.20
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