Parts for your 2006 Toyota Hilux-Drive belt pulley

2006 Toyota Hilux Drive-Belt Pulleys — What They Do and How to Look After Them

Based on Toyota service literature for the 2005–2011 Hilux (AN10/AN20) and mainstream technical catalogues (Toyota EPC, Gates Micro-V, and Dayco application guides), the 2006 Toyota Hilux absolutely uses drive-belt pulleys. Every common engine fitted in 2006—1KD-FTV 3.0 D-4D, 2KD-FTV 2.5 D-4D, 2TR-FE 2.7 petrol and 1GR-FE 4.0 V6—runs an accessory/serpentine drive belt with a crankshaft pulley (harmonic balancer), idler and automatic tensioner pulleys, plus pulleys on the alternator, A/C compressor and other accessories. Many diesel variants also use an overrunning alternator pulley (decoupler) to smooth belt load. So yes—this part is fitted and it matters.

The drive-belt pulley system’s job is simple but critical: it transfers power from the crank to the alternator, power steering pump, water pump and A/C. The crank pulley’s rubber-damped hub tames torsional vibration, while the idler and tensioner keep belt wrap and tension spot on. On diesel Hilux models, the alternator’s decoupler pulley lets the alternator “freewheel” on sudden RPM drops, cutting belt flutter and noise.

Servicing the 2006 Hilux should include a regular look at the belt and pulleys. A quick spin of each pulley (engine off) can reveal roughness, noise or wobble. Any frayed, glazed or cracked belt is a cue to swap it out, and a chirp on start-up or a fluttering belt at idle often points to a worn tensioner or an alternator decoupler that’s seized.

• Common symptoms: belt squeal/chirp, battery light flicker, heavy steering, A/C drop-out under load, visible pulley wobble, or rubber debris near the harmonic balancer.
• Good practice: inspect at every service (around 10–15,000 km), replace the belt on condition or around 60–100,000 km, and renew any noisy idler/tensioner. If the harmonic balancer’s rubber is perished or the ring has shifted—replace it.
• Diesel tip: check the alternator’s overrunning pulley