12 V, 22 A ALTERNATOR FOR FORD WITH TACHOMETER CONNECTOR

This 12 V, 22 A alternator with a tachometer cable connection is designed for use in several Ford tractors. Part number 81816845 meets a specific replacement need for setups that combine the power supply and the tachometer connection. If you are looking for a Ford alternator with this configuration, it is essential to verify the voltage, amperage, and cable connection before ordering.

An alternator designed for the tractor’s charging circuit

The role of an alternator is to supply power to the tractor’s electrical system while the engine is running and to help recharge the battery. For this part number, the specified characteristics are clear: 12 V and 22 A. These two values are crucial for selecting the correct replacement part and ensuring compatibility with the machine’s existing setup.

For a buyer replacing a worn-out or missing alternator, these specifications are more useful than a general description. They allow you to immediately rule out parts designed for a different voltage or charging capacity.

Presence of a Tachometer Cable Connector

The distinguishing feature of this alternator is the presence of a connection for a tachometer cable. This detail is important during replacement, as not all setups include it. On the tractors in question, this connection allows you to maintain the link with the machine’s tachometer system.

If your current alternator is equipped with a tachometer cable, this criterion must be verified first. Conversely, a simple match in make or model is not always sufficient if the tractor has undergone a modification to its assembly over time.

Affected Ford Models

This part number is intended for several Ford tractors. Applications include models from the 00, 000, 10, 30, and 55 series, with a detailed list of models provided below. This overview helps you quickly identify the relevant machines without extending compatibility to the entire product line.

If you are working on a Ford 2000, 3000, 4000, 5000, 7000, 8000, or other models listed immediately following this text, it is always a good idea to verify the part number and the alternator type. A single family of tractors may have had several configurations depending on the year or equipment.

Useful information before ordering

Before confirming this alternator, be sure to check the following:

• Voltage: 12 V
• Current: 22 A
• Special feature: tachometer cable connector
• Part number to compare: 81816845
• Application: Ford tractor listed in the compatibility chart

These simple checks help minimize discrepancies between the expected part and the part currently installed on your tractor. If you’re looking for a Ford alternator with a tachometer, take the time to compare your old part with the description of this part number before finalizing your selection.

Compatibility by Make and Model

Ford · 00 Series

• 2100
• 2300
• 3100
• 3300
• 4100
• 4,200
• 4,400
• 5,100
• 5,200
• 7100

Ford · 000 Series

• 2000
• 3,000
• 4,000
• 5,000
• 7000
• 8,000

Ford · Series 10

• 2,110
• 2310
• 3,310
• 4,110

Ford · 30 Series

• 4130

Ford · 55 Series

• 3055

ford / ford · 000 Series

• “Tractor Alternator 3000”
• “3000 Alternator Regulator”

FAQ — Frequently Asked Questions

What is the purpose of the tachometer wire connector on this alternator?

It is used to connect the tachometer wire when the tractor is equipped with this system. This is important for replacing an alternator without losing this function. For this part number, the presence of this connector is one of the items to check, in addition to the 12 V voltage and 22 A current.

Is this alternator compatible with Ford 3000 and Ford 5000 tractors?

Yes, the Ford 3000 and Ford 5000 are listed among the applications specified for this part number. Before ordering, also compare it to your current setup—particularly the 12 V voltage, the 22 A current, and the presence of the tachometer cable connector—to avoid any mismatches with your tractor’s equipment.

How can I correctly identify part number 81816845 before replacement?

Correct identification is based on three key points: 12 V alternator, 22 A current rating, and a connection for the tachometer cable. Next, verify part number 81816845 and the corresponding Ford application. If your tractor has already been modified, a visual comparison with the old part is still useful before confirming the replacement.

When should a tractor alternator be replaced?

It is generally replaced when there is a charging fault or during electrical system repairs. On a tractor equipped with a tachometer cable in this location, you must also ensure you use the correct type of alternator. The choice therefore depends not only on the tractor’s make but also on the existing setup.

Original replacement part numbers and brand names are provided for comparison purposes only. This does not imply that these are original parts.