Dyson DC25 Cogged Brushroll Belt, 5/16" x 2-1/4" Replacement

This cogged replacement belt, part 12-1400-02, fits the Dyson DC25 upright and measures 5/16 inch wide by 2-1/4 inch, matching the original belt's dimensions. Its toothed profile locks onto the brush motor's pulley so the brush bar turns at full speed instead of slipping under load.

A geared belt like this one grips its pulley teeth-to-teeth rather than relying on friction alone, which is why it holds up better than a smooth stretch belt under the heat and tension a running vacuum puts on it.

• Fits: Dyson DC25
• Dimensions: 5/16 in wide x 2-1/4 in
• Style: Cogged (toothed) drive belt
• Part: 12-1400-02

Replace the belt if the brush bar has stopped turning, carpet debris gets left behind despite good suction, or a burning rubber smell shows up during use, all common signs this DC25 belt has failed. Route the new belt exactly as the old one came off, since a twisted or misaligned belt will wear unevenly and fail again well before its expected service life.