How to Replace Serpentine Belt 06-12 Nissan Altima
Difficulty: Intermediate · About 50 min · Nissan Altima
Replace the accessory drive belt on a 2006–2012 Nissan Altima after checking the belt routing and supporting the vehicle safely for wheel-well access.
Tools you will need
- 14 mm belt-tensioner tool
- 21 mm socket and ratchet
- Rated jack stands
- Torque wrench
Parts and supplies
- Correct accessory belt for the engine
Steps
Raise and support the vehicle
Park on level ground, loosen the wheel fasteners before lifting, then raise the vehicle at an approved point and support it on rated stands. Remove the wheel and inner splash shield for access.
Release belt tension
Record the belt routing from the under-hood diagram before removal. Rotate the tensioner with the correct tool, slip the belt off a pulley, and let the tensioner return slowly.
Fit the replacement belt
Compare the replacement belt length and rib count with the old one. Route it around each pulley according to the diagram, leaving the tensioner pulley for last.
Restore tension and check routing
Move the tensioner to create slack and seat the belt fully on its final pulley. Release the tensioner slowly and inspect every rib for correct alignment in the pulley grooves.
Reassemble and test
Reinstall the splash shield and wheel, tightening wheel fasteners to the vehicle specification in a crossing pattern. Lower the car, start the engine briefly, and confirm the belt tracks correctly.
Check your vehicle’s repair manual for exact specifications and fit.