Product Description

The Kirby rear axle long rod (505/15, part number KB278) is an original equipment manufacturer (OEM) replacement component for Kirby G-series upright vacuums. This precision-engineered axle rod supports the rear wheel assembly and is essential for proper mobility and handling of your Kirby cleaner system.

Built to OEM specifications, this long rod axle ensures correct wheel alignment and smooth operation. It is a direct replacement for models spanning Kirby's G-series line, making it a critical maintenance component for owners looking to restore full functionality to their machines.

Compatibility: Kirby G4, G5, G6, G7, Sentria I, Sentria II, Avalir I, Avalir II

Swiss Boy Vacuum is an authorized Kirby retailer serving the Wasatch Front since 1963. Located in Bountiful, Utah, we stock genuine OEM parts and provide expert service for all Kirby models. Contact us at 801-298-3656 for availability and technical support.

Why Choose This Product?

• Genuine OEM Kirby part ensures perfect fit and durability
• Direct replacement for G-series rear wheel assembly
• Compatible across multiple Kirby G-series generations (G4–G7, Sentria, Avalir)
• Restores smooth wheel operation and proper machine mobility
• Long rod design for correct axle geometry and weight distribution

Specifications

• Brand: Kirby
• Part Number: KB278
• Product Type: Rear Axle Long Rod
• Model Reference: 505/15

Compatibility

• Kirby Models: G4, G5, G6, G7, Sentria I, Sentria II, Avalir I, Avalir II

Use Case

This rear axle long rod is essential for Kirby G-series vacuum owners whose machines show signs of rear wheel misalignment, binding, or difficulty moving freely. If your Kirby is dragging, rolling unevenly, or the rear wheel feels loose or unstable, the rear axle may need replacement. This OEM part restores proper wheel support and alignment, ensuring your G-series Kirby handles smoothly across carpets and hard floors. Regular maintenance of wear components like the rear axle extends the service life of your investment.