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Timing Beltreplacement cost · 2026
SUBARU

Subaru Timing Belt Replacement Cost: EJ-Series Boxer Engines

Subaru EJ25 boxer (Outback, Forester, Legacy, Impreza pre-2013) runs $700-$1,300 with the water pump bundle. Interference engine, the belt is non-negotiable on schedule. The boxer layout puts the belt in a more complex routing path than an inline engine, which means the water pump (centrally placed in the timing system) is essentially impossible to skip on the bundle. Modern Subarus (2011+ FB-series, FA20 BRZ) use a chain.

Cost by model

Model / engineYearsDriveBundle
Outback EJ25 H4 boxer1996-2012Belt$850-$1,300
Forester EJ251998-2012Belt$800-$1,250
Legacy EJ251996-2012Belt$800-$1,250
Impreza EJ25 / EJ201996-2011Belt$750-$1,200
WRX EJ255 / EJ257 turbo2004-2014Belt$950-$1,500
Legacy GT EJ255 turbo2005-2009Belt$1,000-$1,500
Forester XT EJ255 turbo2004-2013Belt$1,000-$1,500
Outback / Forester FB252011-presentChainNo service
Impreza / Crosstrek FB202012-presentChainNo service
BRZ FA202013-presentChainNo service
WRX FA20DIT (newer)2015+ChainNo service

Why boxer engines are different

Subaru's EJ-series H4 boxer has the cylinders horizontally opposed: two on each side, offset, with the crankshaft running through the middle. The timing belt runs around two camshaft pulleys (one per bank), the crankshaft pulley, the water pump, and a tensioner. The routing is more complex than an inline engine and the belt is longer.

Three implications:

  • • Higher labour. 6-8 hours typical, vs 3-5 for an inline 4-cyl. Access to the right-side valve cover is decent; left side requires more disassembly.
  • • Water pump bundle is essentially mandatory. The pump sits centrally in the timing system. Skipping it now means doing the entire job again later for the pump alone.
  • • Tensioner setup is fussy. Subaru spec calls for the hydraulic tensioner to be reset on a flat surface for 5+ minutes before installation. Botched tensioner setup is a common failure mode.

EJ25 is interference. Belt failure equals valve damage. The 105,000-mile interval is a hard ceiling, not a target.

OLDER PLATFORMS = SHORTER INTERVALSubaru EJ engines made before about 2003 have a 60,000-mile recommended interval, not 105,000. If you have a pre-2003 Outback, Forester, Legacy, or Impreza, treat 60K as the ceiling. The 105K interval applies to 2003+ Phase II and Phase III EJ-series engines.

Subaru independent specialist

  • • Labour rate: $100-$140/hr
  • • EJ25 Outback bundle: $850-$1,150
  • • EJ255 WRX bundle: $1,000-$1,400
  • • Worth seeking out, Subaru-specific knowledge matters here

Subaru dealer

  • • Labour rate: $140-$180/hr
  • • EJ25 bundle: $1,200-$1,500
  • • EJ255 turbo bundle: $1,400-$1,800
  • • $200-$500 saving vs dealer for the same work at an independent
Legitimate add-ons on EJ-series:
  • • Water pump (mandatory, see above)
  • • Tensioner (not optional, replace with belt)
  • • Both idler pulleys (smooth and toothed) - $30-$60 each
  • • Front crankshaft seal - cheap part, free labour while in there
  • • Camshaft seals - $20-$40 each, accessible during this job, often skipped and then leak
  • • Coolant flush - cooling system is open, $50-$100 extra
  • • Valve cover gaskets - common leak on older EJ25, $40-$80 in parts

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