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Subaru Baja Single Generation

2003–2006 · BT · truck

The Baja was a four-door car-based pickup built on the Legacy Outback platform with a short composite bed and a midgate (called Switchback) that folded into the cabin for longer cargo. Naturally aspirated EJ251/EJ253 2.5L flat-four was standard; a turbocharged EJ255 Baja Turbo joined for 2004 with around 210 hp. AWD across the lineup. Sales were modest and it was discontinued after 2006.

Watch out: Owner reports of EJ251/EJ253 head-gasket weeping (the Subaru naturally aspirated 2.5L gasket pattern), turbo seal wear on the 2004-2006 Baja Turbo, and Switchback midgate seal degradation causing water leaks into the cabin. Salt-belt rust is common on cars that lived outdoors.

What your Baja 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.

  • Wiper blades22" driver · 20" passenger✓ VerifiedView
  • Spark plugs2.5L-H4: BKR5EGP✓ VerifiedView
  • BatteryGroup 35 · 490 CCA min✓ VerifiedView
  • Oil filterParts in catalogShop
  • Tire sizeNot catalogued yetFind yours soon
  • Engine oilNot catalogued yetFind yours soon
  • Engine air filterNot catalogued yetFind yours
  • Cabin air filterNot catalogued yetFind yours
  • Headlight bulbsNot catalogued yetFind yours soon
  • CoolantNot catalogued yetFind yours soon
  • Brake fluidNot catalogued yetFind yours soon
  • Transmission fluidNot catalogued yetFind yours soon
  • Tire pressureNot catalogued yetFind yours soon
  • Key fob batteryNot catalogued yetFind yours soon
  • Power steering fluidNot catalogued yetFind yours soon
  • Differential 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

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

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