Repair Cost Guide

Serpentine belt replacement cost
for a Subaru Outback

Replacing the serpentine (accessory) belt on a Subaru Outback involves removing the old belt and installing a new one around the pulleys for the alternator, power steering, air conditioning, and water pump. The primary cost drivers are the labour time, which can vary significantly based on engine accessibility, and the choice between a standard or premium belt.

$180 – $350
Typical fair price range · USD

Cost breakdown

Parts: ~$30-$70 / Labour: ~$150-$280

What affects the price

Engine configuration: The 3.6L H6 engine often requires more labour time than the 2.5L H4 due to tighter access.
Belt quality: A standard OE-style belt is cheaper, while a high-performance or OEM belt increases the parts cost.
Additional services: If the tensioner or idler pulleys are seized or noisy, they should be replaced concurrently, adding to the total cost.

Can you do it yourself?

Possible with skill — requires basic tools and knowledge of the belt routing diagram, but access can be tight and the belt tensioner must be released correctly.

Tips before you pay

Always check the belt tensioner and idler pulleys for smooth rotation and noise while the old belt is off.
Take a photo or consult the under-hood diagram for the exact belt routing before removal to ensure correct reinstallation.
On some model years, removing the engine cover and/or a splash shield may be necessary for proper access.

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More cost guides

Brake pads replacement — Subaru Outback Alternator replacement — Subaru Outback Timing belt replacement — Subaru Outback

Estimate based on typical U.S. market rates as of July 2026. Actual prices vary by region, shop, and parts quality — always compare against a real quote using our Scam Checker.