Parts for your 2005 Honda Stream-Drive belt pulley

2005 Honda Stream drive-belt pulley — what it does and how to look after it

Technical sources confirm that the 2005 Honda Stream uses a drive belt with multiple pulleys. The Honda Stream Service Manual for RN1–RN5 (2001–2005) shows the auxiliary/alternator drive belt system with a crankshaft pulley (harmonic balancer), auto-tensioner pulley, idler pulley, alternator pulley and A/C compressor pulley, plus a power steering pump pulley on hydraulic-steering models. Honda’s electronic parts catalogue for RN1–RN5 and aftermarket catalogues from Gates and Dayco also list a serpentine belt and tensioner/idler pulleys for the 2005 Stream, evidencing that a drive-belt-pulley is fitted on this vehicle.

On the 2005 Honda Stream, the drive-belt pulleys sit at the front of the engine, transferring crankshaft rotation to essentials like the alternator and A/C compressor, and to the power steering pump where fitted. The crank pulley sets everything in motion, the tensioner keeps the belt tight, and idlers guide the belt so it runs straight and quiet. It’s a simple setup that keeps charging, cooling and steering assistance on song — the kind of gear drivers don’t notice until it goes pear-shaped.

With age and kilometres, pulley bearings can dry out, seals can weep, and the rubber damper in the crank pulley can split. The spring in the auto-tensioner also sags over time, letting the belt slip. Catching these early keeps the Stream reliable and helps avoid being stranded with a flat battery or no A/C on a stinking hot day.

• Common clues it’s time for attention:
  • Chirps or squeals on cold start or when the A/C kicks in.
  • Wobble in any pulley, or belt “walking” on a rib.
  • Vibration at idle from a failing crank pulley damper.
  • Glazed, cracked, or missing belt ribs.
  • Battery warning lamp flickering at idle.

Good practice is to inspect the belt and pulleys at every service (around 10–15,000 kilometres). Spin-check idlers and the tensioner with the belt off, any roughness, play or noise means replacement. If the tensioner pointer is out of range, fit a new tensioner. Many workshops replace the belt at roughly 90–120,000 kilometres or 6–8 years, earlier if there’s noise or wear — always follow the workshop manual for your exact engine.

When replacing a pulley, use quality parts, route the belt to the under-bonnet diagram, and torque fasteners to the Honda spec. The crank pulley bolt is very tight and typically needs a holding tool, don’t rattle-gun it without restraint. Avoid belt dressings, a clean, aligned system shouldn’t need them. For clarity, the D17A 1.7 uses a cam timing belt and the K20 2.0 uses a chain — separate from the accessory drive belt and pulleys discussed here.

Popular questions

How often should the drive belt and pulleys be replaced on a 2005 Honda Stream?
Most owners have the belt inspected every service and replaced around 90–120,000 kilometres or 6–8 years, whichever comes first. Pulleys and the tensioner are replaced as needed if there’s play, noise or misalignment. Always follow the Honda service schedule for your specific engine and conditions.

What noises point to a failing pulley or tensioner?
A light chirp on start-up often hints at a glazed belt or weak tensioner. A constant squeal under load suggests slip. Growling or a rumble that changes with engine speed usually indicates a dry or failing idler/tensioner bearing. Any wobble or thump at idle can indicate a deteriorating crank pulley damper.

Is the drive belt the same as the timing belt or chain on the Stream?
No. The auxiliary drive belt runs the alternator, A/C and (where fitted) power steering. The D17A 1.7 uses a timing belt for the camshaft, while the K20 2.0 uses a timing chain. They’re separate systems with different service requirements.