Stens 280-737 Flat Idler for Exmark Lazer Z Mowers – Replacement 109-8590, 116-9639 (Black)

Overview

Replace a worn or misaligned belt guide with the Stens 280-737 flat idler, designed as a ready-made replacement for Exmark Lazer Z mowers. This part targets models that list OEM numbers 109-8590 and 116-9639, delivering a black, metal body built for everyday mowing duties. The aim is simple: help belt paths stay true so the mower operates with steady guidance and reduced belt wear over time.

Manufactured by an OEM supplier, this flat idler arrives in a single-piece pack, with dimensions and weight listed to support accurate ordering and shipping planning. Its compact footprint and sturdy metal construction are intended to fit into the existing belt system without major modifications.

Key specifications

• Compatibility: Exmark Lazer Z mowers
• Replaces OEM numbers: 109-8590 and 116-9639
• Material: Metal
• Finish: Black
• Type: Flat idler with precise geometry
• Dimensions (approx): A 8 3/4, B 8, C 5/8, D 1, F 1/4, Height 1
• Overall diameter: 8 3/4; inner diameter: 5/8; offset: 1 5/8
• Packaging: 1 piece; weight about 2.92 lb

What this means in practice

For many users, a correctly aligned belt path means smoother mowing experiences, less belt wandering, and more predictable cutting performance. Since the part directly references Exmark OEM numbers, it is positioned as a practical stand-in that supports the mower’s standard belt routing.

• Reliability: metal components resist regular wear and maintain alignment under typical mowing loads
• Compatibility: tailored to Exmark Lazer Z models and OEM references
• Installation: straightforward replacement that fits into the existing setup

Note: Verify fit before purchasing. Compare the Exmark OEM numbers 109-8590 or 116-9639 and review the listed dimensions to confirm compatibility with your machine.