A snapped serpentine belt kills your alternator, power steering, and AC simultaneously and leaves you stranded. For Kenmore drivers on SR-522 and the Lake Washington loop routes, Tom's B&M Auto replaces serpentine belts with OEM-specification belts and inspects every accessory pulley before installation — a seized idler on a new belt causes failure within weeks.
Every accessory pulley inspected by hand: alternator, AC compressor, power steering pump, idler pulleys, and tensioner. We listen for bearing noise and check for wobble. A failed bearing destroys a new belt in miles.
OEM-specification belt installed in the correct length and rib count for your vehicle. Belt tensioner spring tension checked — a weak tensioner allows belt slip on cold starts.
Belt routing verified against factory diagram. Post-installation idle and rev check to confirm belt tracking correctly. Service typically completed in 30-60 minutes.
The tensioner is a wear item just like the belt. A tensioner spring that's lost tension allows belt slippage under load — the condition that causes belt squeal and glazing that shortens belt life. We recommend replacing the tensioner with every belt service on vehicles over 60,000 miles.
Belt length matters more than most drivers realize. A belt that's one rib width short puts excess load on bearing surfaces and causes premature pulley wear. We stock belts for all common makes and use the vehicle-specific part number — not a length-matched substitute.
Every belt-driven pulley spun and checked for bearing noise before installation.
Worn tensioners allow belt slip. We check tension and recommend replacement where needed.
Most serpentine belt replacements completed in under an hour.
Serpentine belt service includes inspection of all accessory pulleys (alternator, AC compressor, power steering, idlers), tensioner spring tension check, OEM-spec belt installation in correct length and rib count, and post-installation belt tracking verification.
From Tom's B&M Auto - serving Kenmore and the greater Seattle metro.
Tom's B&M Auto · 17820 Hwy 99, Suite E, Lynnwood · Serving greater Seattle
Also serving: Edmonds, Mountlake Terrace, Shoreline, Mukilteo, Kenmore, Alderwood Manor