Pivot Rod 532133551 6.25 x 4.00 x 0.85 Genuine OEM. This is a Genuine OEM part. This blade engagement pivot rod (part number 532133551) is for lawn tractors. Blade engagement pivot rod 532133551 helps engage and disengage the mower blades. Wear work gloves to protect your hands when installing this p... - Pivot Rod 532133551 6.25 x 4.00 x 0.85 Genuine OEM.