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Ford Mustang S550 (6th Generation)

2015–2023 · S550 · coupe

The S550 is the first IRS Mustang and the first sold globally. Coyote 5.0 (Gen 2 to 2017, Gen 3 2018-2023, 460hp), 2.3L EcoBoost I4 (310-330hp), Voodoo 5.2L flat-plane crank in the GT350 (526hp, 8,250 rpm redline), Predator 5.2L supercharged in the GT500 (760hp). MT82 6-speed manual lineage continues; 10-speed 10R80 automatic from 2018+.

Watch out: MT82 6-speed manual notchy/grinding 3-2 downshift and 1-2 shift-fork wear — Ford has issued multiple TSBs (e.g., 18-2267 for 2018-2019 shift forks) and many cars need synchronizer or full rebuild by 60-80k miles.

What your Mustang takes

The parts and fluids that fit this generation. Specs we publish are confirmed against two independent sources; the rest fill in as we verify them.

  • Tire size235/55R17✓ VerifiedView
  • Wiper blades22" driver · 20" passenger✓ VerifiedView
  • Engine oil5W-20 (10 qt) · 5W-30 (6 qt)✓ VerifiedView
  • CoolantMotorcraft Orange WSS-M97B44-D2From owner's manualShop
  • Tire pressure32 psiFrom owner's manualShop
  • Differential fluidRear: 75W-85 GL-5 (Motorcraft Premium Synthetic Hypoid Gear Lubricant, WSS-M2C942-A) (~1.6 qt)From owner's manualShop
  • Oil filterParts in catalogShop
  • Spark plugsParts in catalogShop
  • BatteryNot catalogued yetFind yours soon
  • Engine air filterNot catalogued yetFind yours
  • Cabin air filterNot catalogued yetFind yours
  • Headlight bulbsNot catalogued yetFind yours soon
  • Brake fluidNot catalogued yetFind yours soon
  • Transmission fluidNot catalogued yetFind yours soon
  • Key fob batteryNot catalogued yetFind yours soon
  • Power steering fluidNot catalogued yetFind yours soon
  • Serpentine beltNot catalogued yetFind yours soon
  • Brake padsNot catalogued yetFind yours soon
  • Wheel fitmentNot catalogued yetFind yours soon
  • Brake rotorsNot catalogued yetFind yours soon
  • ThermostatNot catalogued yetFind yours soon
  • A/C refrigerantNot catalogued yetFind yours soon
  • Fuel filterNot catalogued yetFind yours soon

Floor mats

Our top custom-fit pick for the Ford Mustang is the WeatherTech Custom Fit FloorLiners 1st & 2nd rows.

Floor mats for the Ford Mustang →

Full clubhouse — owner Garage Lineage, common problems, year-by-year notes, and product picks — is on the build list.

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