GMB 445-8510 Engine Timing Idler - Lower

Engine Timing Idler for Mazda and Ford Applications

GMB 445-8510 is an engine timing idler built for lower timing system applications on select Mazda and Ford vehicles. Manufactured to meet or exceed OEM specifications, it is a direct-fit replacement for service work on the Mazda 626, Millenia, MX-6, MX-3, and Ford Probe.

Key Features

• Engine timing idler for lower timing drive applications
• Metal pulley construction for durability in engine bay conditions
• Serpentine and V-belt pulley type
• Single-groove pulley design
• Built to meet or exceed OEM specifications
• Direct replacement part number 445-8510

Detailed Product Overview

This GMB timing idler is engineered for lower-position timing system service on 1992-2002 Mazda and Ford platforms. It is listed for the Mazda 626, Millenia, MX-6, and MX-3, as well as the Ford Probe, with fitment covering the lower timing location across the specified model years. The metal pulley design and OE-level specification target consistent belt tracking and dependable operation in timing-related service. Cross-reference part numbers include Gates T42009 and 85326 for the same application. Part number 445-8510 is also referenced as 4458510 and KL0112740 in interchange data.

Common Problems This Part Addresses

• Noise from a worn or rough timing idler pulley
• Belt tracking issues in the lower timing drive area
• Replacement needs during timing system service
• Wear-related pulley surface damage
• Fitment concerns on Mazda 626, Millenia, MX-6, MX-3, and Ford Probe lower applications

Installation Notes and Tips

Verify the lower timing idler location before installation and compare the old pulley to GMB 445-8510 for diameter, groove count, and belt type. Confirm vehicle year, make, model, and engine configuration against the listed fitment before service. Timing system components should be inspected together so the replacement matches the condition of the surrounding drive parts.

Quality Assurance

GMB states that this part is manufactured to meet or exceed OEM specifications, supporting OE-style replacement standards for timing system repair.