Toro 139-3278 Breather Assembly Kit

Product Description

The TORO 139-3278 is a breather assembly kit designed to maintain proper crankcase ventilation in small engine equipment. The breather assembly regulates internal engine pressure and prevents oil blow-by by allowing controlled airflow out of the crankcase while blocking oil from escaping. This kit supplies the necessary components to restore a worn or damaged breather system to factory specification. It is typically installed by small engine technicians or experienced equipment service personnel during routine engine maintenance or as part of a compression or oil consumption diagnosis.

This breather assembly kit is suited for Toro lawn and garden equipment powered by small four-stroke engines. Typical applications include walk-behind mowers, riding mowers, and other Toro-branded outdoor power equipment that require crankcase breather service. The kit format provides all required components in a single package, reducing return trips and simplifying the repair workflow.

Key Features

• Complete assembly kit includes all components needed for breather system replacement
• Restores proper crankcase pressure regulation and reduces oil blow-by
• OEM part number ensures direct fitment for applicable Toro equipment
• Supports proper engine breathing to help maintain compression and oil levels

Compatibility

Designed as an OEM-style replacement breather assembly kit for applicable Toro lawn and garden equipment small engines. Consult the Toro parts lookup or equipment service manual using part number 139-3278 to confirm fitment for a specific model.

Installation Notes

Installation should be performed by a qualified small engine technician. Shut off the engine completely and allow it to cool before beginning any crankcase service. Disconnect the spark plug wire before disassembling any engine components to prevent accidental starting. Refer to the applicable Toro engine service manual for correct assembly sequence and gasket seating procedures.

Technical Specifications

• Part Type: Breather Assembly Kit

Standard Information

• Brand: TORO
• Manufacturer Part Number: 139-3278