12V 9T Starter Motor CST10153AS for Iveco TL80

Overview of the CST10153AS Starter Motor

The CST10153AS starter motor is a 12V unit built for Iveco TL80. 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.

Because the motor is only used in short bursts, heat builds up quickly and escapes slowly. A starter that has worked for years in traffic or on site will show heat-hardened resin, shortened brushes and a pitted solenoid contact long before the windings fail.

Specifications at a Glance

• Rated voltage: 12V
• Pinion: 9 teeth
• Type: reduction gear starter with pre-engaged solenoid
• Application: Iveco TL80
• Net weight: approximately 7.8 kg
• Condition: new, direct replacement for the original unit

The 12V rating matches the original electrical system, so the unit can be connected to the existing cabling and solenoid circuit without modification.

The drive end housing is cast aluminium and carries the pinion bearing, so the pinion stays square to the ring gear when the motor delivers full torque.

Reference Numbers and Cross References

The reference family for this starter covers the numbers listed here:

• 0001230007
• 4755109
• 500325145
• 504059251
• 0986018987
• CST10153AS
• JB123708317
• 0986018980
• TL80
• 113182
• 47783079
• 0001230010
• 0001230023
• 500338952
• 11131604
• AZF4155

Starter suppliers revised this design more than once during production. Confirm the number on the old unit, or send a photograph of the drive end, before committing to an order. This starter is listed with 16 references in total.

Fitment and Application

The unit is listed for Iveco TL80. Because manufacturers changed starter suppliers during the production run, the safest check is the number stamped on the starter body, not the model year alone. Owners of Iveco TL80 should treat the CST10153AS reference list as a starting point, not the final answer.

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.

Common Failure Patterns

Most failures start at the solenoid contact. Each start switches the full cranking current through a copper disc, and after thousands of cycles that disc pits and burns. The result is the familiar single click with no rotation, or a delay before the motor turns.

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. For the CST10153AS, the practical check is the number stamped on the housing.

Fault Symptoms

• No-crank with a fully charged battery
• Cranking that slows noticeably as the engine bay heats up
• Grinding that disappears on a second attempt
• Whine under load, suggesting a slipping pinion clutch
• Starter that continues to spin for a second after the engine fires

Rule out the simple causes first: battery capacity under load, corroded terminals and the signal wire at the solenoid. A starter that clicks with a known-good battery and a clean signal circuit has an internal contact fault. Fitting the CST10153AS correctly takes less time than diagnosing the original fault.

Before You Fit the Replacement

• 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.

Fitting the Replacement

Raise and support the vehicle where the starter is reached from below, disconnect the battery, and detach the main cable and signal wire. Note the cable positions before removal so the replacement goes back the same way.

Inspect the ring gear teeth and the mounting face, then fit the replacement and torque the bolts evenly. Reconnect the main cable and signal wire, crank the engine for a moment and listen for clean engagement without a screech or grind. The CST10153AS ships with its solenoid fitted, so no parts have to be transferred from the old unit.

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

Each production batch is inspected for housing dimensions, terminal integrity and pinion fit, and every starter is bench tested before it is boxed. Units ship in neutral cartons with foam protection, which keeps freight damage low and allows distributors to label stock under their own brand.

Standard references are held as spot goods, volume orders are delivered in around 30 days, and every unit carries a one-year warranty against manufacturing defects.

Frequently Asked Questions

Why does the starter click but not turn?

Most often the battery is low, a terminal is corroded or the solenoid contact is burnt. Measure battery voltage while the key is turned; a healthy battery that still gives only a click points to the solenoid.

Can the solenoid be replaced on its own?

It is possible, provided the motor draws normal current and the pinion is sound. Where the brushes are already short, replacing the complete starter avoids a second repair within a year.

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.

Does this starter come with the solenoid?

Yes. The unit is supplied complete with its solenoid, as shown in the product photographs. Mounting bolts are not included.