Flat Idler Pulley, 6-3/4"X11/16"

Flat Idler Pulley, 6-3/4"X11/16"

The 280-639 Flat Idler Pulley (6-3/4" × 11/16") is a heavy-duty metal idler pulley designed for heavier load belt-drive applications, featuring a single row bearing with double sealed sides for reliable, longer-lasting operation. It replaces multiple OEM part numbers for Exmark, Toro, and Husqvarna applications—so you can get the deck spinning smoothly again instead of sounding like it’s auditioning for a squeak orchestra.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 280-639
• Brand: Stens
• Product Type: Flat idler pulley
• Material: Metal
• Duty Rating: Heavy duty (for heavier load applications)
• Bearing: Single row bearing with double sealed sides
• Outside Diameter (OD): 6-3/4 in
• Inside Diameter (ID): 11/16 in
• Height: 1-1/8 in
• Dimensional Callouts (as listed):
  • A: 6-3/4"
  • B: 6"
  • C: 11/16"
  • D: 3/4"
  • E: 7/32"
  • F: 7/32"
  • V: 1-1/8"
• OEM / Cross References:
  • Exmark: 116-4667, 126-4667, 126-7685, 1-633109, 633109
  • Husqvarna: 126-7685, 539102610
  • Toro: 116-4667, 126-7685, 132-9424, 1-633109
• Fits Models (as listed):
  • Exmark: Lazer Z and Lazer XP with 60" and 72" deck
  • Toro: 60" and 72" Z 500 Series Z Master; 74260 Z 597 with 60" and 72" deck
• Color Note: Color may vary

Ideal For

• Replacing worn idler pulleys on compatible Exmark Lazer Z/Lazer XP and Toro Z Master decks
• Mower decks needing a 6-3/4" OD flat idler with 11/16" ID
• Heavier-load belt systems where sealed bearings help extend service life
• Eliminating belt noise, wobble, and rough pulley spin before it eats a belt for lunch