12V 4KW 13T Starter Motor 17802N for Ford

Overview of the 17802N Starter Motor

The 17802N starter motor is a 12V, 4 kW unit built for Ford. It is a reduction-gear starter with a pre-engaged solenoid, assembled to the original mounting flange and terminal positions so it fits without adapters or wiring changes.

The starter carries the full cranking current through its brushes and solenoid contact, so every start costs a little material. That is why the unit is normally replaced once, at the end of a long service life, rather than repaired repeatedly.

Technical Summary

• Rated voltage: 12V
• Rated output: 4 kW
• Pinion: 13 teeth
• Type: reduction gear starter with pre-engaged solenoid
• Application: Ford
• Net weight: approximately 10.55 kg
• Condition: new, direct replacement for the original unit

A 12V 4 kW rating is the output the motor can hold while cranking, not a peak figure. It is sized so the engine reaches starting speed on the first or second revolution, which is what makes a healthy start feel immediate.

A pre-engaged solenoid pushes the pinion into mesh before the main contact closes, which prevents the tooth damage that occurs when a motor spins up against a stationary ring gear.

Reference Numbers and Cross References

Cross references for this starter are listed below. They are a matching aid rather than a substitute for checking the number on the old unit:

• 228000-8420
• 17802N
• 2280008420
• STN7802
• STN7802NB
• STN7802US
• 2-2197-ND
• FSTU11000AA

Several numbers in this list belong to complete starter assemblies while others refer to the motor only. A visual check of the drive end protects against the most common ordering error. This starter is listed with 8 references in total.

Where This Starter Is Used

This starter family was fitted to a range of Ford applications, and the part number changed as engines and flywheels were revised. The unit listed here covers the references above and is a direct replacement where those numbers match. The 17802N ships with its solenoid fitted, so no parts have to be transferred from the old unit.

Vehicles that have had an engine or gearbox replacement may already carry a different starter from the one the catalogue expects, so treat the paperwork as a starting point rather than the final answer.

What Wears Out First

Oil or coolant mist from a leaking seal finds its way into the drive end housing, mixes with carbon dust and forms a conductive paste. The starter then arcs internally and fails early, whatever its mileage.

The brush plate is the second common failure point. Brushes shorten gradually, spring pressure falls, and contact becomes intermittent. Cranking speed drops a little every week until the engine refuses to start on a cold morning. Where a 17802N has been replaced before, check that the fitted unit still matches the reference list.

Diagnostic Signs

• Click from the solenoid with no rotation, sometimes clearing on a second attempt
• Cranking that has become slower over several weeks
• Grinding as the pinion meets the ring gear
• Starter that keeps running after the key is released
• Intermittent no-crank that appears when the engine bay is hot

A cranking voltage test separates the starter from the rest of the circuit. If battery voltage stays healthy at the terminals but drops sharply at the starter stud, the cable or the connection is at fault rather than the motor. Owners of Ford should treat the 17802N reference list as a starting point, not the final answer.

What to Check Before Fitting

• Condition of the old pinion and ring gear before the new unit goes in
• Main cable continuity and the condition of the lug at the starter stud
• Battery voltage while cranking, measured at the battery posts
• Mounting face cleanliness and bolt condition
• That the replacement terminal layout matches the original harness

Most comebacks after a starter replacement trace back to something that was not checked before the unit went on: a tired battery, a corroded earth or a chipped ring gear. Ten minutes with a multimeter and a torch prevents the second repair.

Installation Notes

Isolate the battery, mark the terminal positions, then disconnect the main cable and the signal wire. Clean around the mounting flange before the starter is withdrawn so dirt does not fall into the bell housing.

Clean the mounting face and inspect the ring gear teeth through the starter aperture. Fit the replacement with the original bolts, reconnect the cables in the same order and tighten the main terminal firmly. Crank the engine briefly and listen for clean engagement and release. Owners of Ford should treat the 17802N reference list as a starting point, not the final answer.

Quality Control and Supply from Hejian Nuojin Auto Parts Co., Ltd.

Hejian Nuojin Auto Parts Co., Ltd. manufactures starter and alternator components for the aftermarket. Every unit is bench tested for no-load current draw, solenoid pull-in and release voltage, pinion throw and running noise before packing.

Common references are kept in stock for fast dispatch, volume orders are delivered in around 30 days and each starter carries a one-year warranty against manufacturing defects.

Frequently Asked Questions

Is a 12V and a 24V starter interchangeable?

No. The voltage rating must match the vehicle system; fitting the wrong unit will damage the starter and the wiring.

Why does the starter click but not turn?

A click with no rotation usually means the solenoid pulls in but the contact does not pass current. Check the earth strap and the main cable before condemning the starter.

Can I test the starter on the bench?

Yes. Apply battery voltage to the main stud and the signal terminal and check that the pinion throws and the motor turns. A clamp meter reading against the rated current will show whether the unit is drawing too much.

Does this starter come with the solenoid?

The starter is supplied as a complete assembly including the solenoid. Reuse the original mounting bolts if they are in good condition.