22398223 | Genuine OEM Volvo / Mack 39MT Starter Motor 12V

The Genuine Volvo / Mack 39MT Starter Motor, part number 22398223, is a 12V starter designed to crank compatible heavy-duty diesel engines during startup. Its gear-reduction design delivers the cranking power needed for commercial truck applications. Always verify the original part number and starter configuration before ordering.

PRODUCT INFORMATION

• Part Number: 22398223

• Brand: Volvo / Mack

• Product Name: 39MT Starter Motor

• Component: Engine Starting System

• Voltage: 12V

• Starter Series: 39MT

• Mounting Type: SAE 3

• Pinion Teeth: 12

• Rotation: Clockwise (CW)

• Polarity: Insulated

• Condition: Verify the actual item's condition before listing

APPLICATIONS

Part number 22398223 is associated with Volvo and Mack heavy-duty truck starter applications. Engine and vehicle compatibility depends on the specific model year, engine, and starter configuration.

Check the original starter part number, VIN, engine model, mounting style, and electrical connections before purchase.

FUNCTION

The 39MT starter motor uses electrical power from the vehicle's battery to rotate the engine during startup. Its pinion engages with the engine's ring gear to crank the engine until it can run independently.

COMMON SIGNS OF STARTER MOTOR FAILURE

A worn or failing starter motor may cause symptoms such as:

• Engine cranks slowly or inconsistently

• Clicking when attempting to start

• Starter motor fails to engage

• Intermittent starting problems

• Grinding or unusual noises during cranking

• Starter does not respond when the ignition is activated

These symptoms may also result from a weak battery, poor electrical connections, or a faulty starter relay. Diagnose the starting system before replacing the starter.

WHY REPLACE A STARTER MOTOR?

Replacing a faulty starter motor helps restore reliable engine cranking, reduce vehicle downtime, and support dependable starting in demanding commercial applications. The replacement must match the truck's electrical system, mounting configuration, and engine requirements.

FITMENT INFORMATION

Before ordering part 22398223, verify:

• Original OEM part number

• Vehicle VIN, model, and model year

• Engine model and configuration

• 12V electrical system

• SAE 3 mounting and pinion specifications

• Rotation direction and electrical connections

Related references may include P22398223 and 8201100, but cross-reference numbers do not guarantee interchangeability. Confirm fitment using a reliable parts catalog or dealer.

GENUINE VOLVO / MACK PART

This listing identifies the starter by part number 22398223 and the Volvo / Mack application. Check the actual manufacturer's markings and item condition before describing the product as new or genuine OEM inventory.