90-99 Mazda Miata Idler Pulley - Gates 36099

Maintain proper belt alignment and tension in your Mazda Miata with the Gates 36099 DriveAlign Idler Pulley, an OEM-quality replacement for 1990–1999 MX-5 Miata models. Designed to work with A/C, power steering, and alternator accessory drives, this precision-engineered pulley ensures your Miata operates silently and efficiently — from daily drives to heated track sessions. eBay+2PartsHawk+2

Constructed with steel and thermoplastic materials, the DriveAlign pulley resists dirt, salt, and underhood contaminants, built to tighter tolerances for extended durability. The bearing meets or exceeds OE standards, ensuring smooth operation under load and high RPMs. Enhanced speed and load capacity help prevent premature bearing noise and failure. 

Key specs include a 70 mm outside diameter, 20.5 mm width, 4 V-rib grooves, a 15 mm bearing bore, and optional flanged design for secure belt tracking. The parasitic drag is minimized, helping preserve engine output while maintaining proper tension.

This pulley fits the stock accessory layout for Miata NA (1.6L and 1.8L) and early NB models used in 1999, making it invaluable for rebuilds, maintenance intervals, or performance upgrades.

Ideal for Miata enthusiasts and racers: By replacing worn or noisy pulleys before failure, you avoid belt misalignment, squeal, and possible auxiliary drive damage—ensuring everything stays tethered and track-ready.

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