Starter Motor 5493012 24V 7.5KW 11T Cummins NT855

Product Overview

The 5493012 is a brand-new starter motor delivering 24V output at 7.5KW with an 11-tooth drive gear, engineered for the Cummins NT855 engine series and other Cummins heavy-duty powertrains. This unit, cross-numbered as 5367763 and 5493112, matches the original starting-system specification for the Cummins heavy-duty platform, and is a genuine-factory-spec direct replacement with no modification required for installation.

This starter motor is stocked in-house with a 1-year warranty and 10-day dispatch lead-time. The factory-correct 24V 7.5KW specification with high-torque design ensures reliable cold-starting performance for large diesel engines in heavy-load working conditions such as mines, infrastructure construction and ships.

Key physical specs: net weight 14 kg (as stated on the original page, no gross weight is published), overall dimensions 440 x 240 x 190 mm, supplied inside neutral kraft inner carton.

The Cummins NT855 Heavy-Duty Starting Platform

According to the original specification table on the product page, this starter is designed for the Cummins NT855 series, including NTA855, K19, K38 and other large diesel engines, and is suitable for ISM, QSM, QSX, N14, K19 and other engine series. Typical applications include bulldozers, excavators, generator sets and heavy-duty trucks, such as Tiangong T180F, Dadi MD23, MD32, Liebherr R984C and other engineering equipment.

Product advantages stated on the original page: high torque, as the 7.5KW power is suitable for cold starting of large diesel engines; durability, designed for heavy-load working conditions of construction machinery; direct replacement, original factory specifications with no modification required for installation; and compatibility, covering Cummins heavy-duty engine models.

It is critical to verify the voltage, power rating and tooth count on your old starter: this unit is rated at 24V 7.5KW with an 11T drive gear. Starters with a different voltage, power rating, tooth count or mounting pattern are not interchangeable with this unit. The 11T drive gear is a key identification point for this unit, so count the teeth on your old starter pinion carefully.

Confirm the mounting flange pattern, terminal positions and bolt spacing against your original starter before ordering. Always cross-check the OE numbers stamped on your old unit, including the 5493012 family, before placing an order.

Technical Specifications

Compatibility and Cross Reference

According to the original product page and its specification table, this starter motor fits the Cummins NT855 series including NTA855, K19 and K38 large diesel engines, and the ISM, QSM, QSX, N14 and K19 engine series. Typical equipment includes bulldozers, excavators, generator sets and heavy-duty trucks such as Tiangong T180F, Dadi MD23, MD32 and Liebherr R984C. The original page publishes the fitment information in table form; still compare the original part number, mounting holes, tooth count and connector configuration before ordering.

Multiple OEM and cross numbers appear across production batches and regional market specifications for this same starter family. If your original unit bears one of the listed cross-reference numbers, 5493012 serves as a direct drop-in replacement.

What to Look for in a Replacement

Follow these five verification steps before placing your order to avoid wrong-part returns:

• 1. Check the voltage and power rating on your old starter: confirm it is a 24V 7.5KW unit for the Cummins heavy-duty application. Other ratings are not interchangeable.

• 2. Check the tooth count on your old starter: confirm it is an 11T drive gear. Starters with a different tooth count are not interchangeable.

• 3. Confirm the application is a Cummins NT855 series (NTA855, K19, K38), ISM, QSM, QSX, N14 or K19 engine. Other engines may use different starter assemblies.

• 4. Compare the mounting holes, flange pattern and connector configuration with your original starter, and match OE numbers including the 5493012 family.

• 5. Weight cross-check: genuine matching unit weighs approximately 14 kg net; significant weight difference indicates wrong assembly.

Application Scenarios

• Construction machinery service centers for bulldozers, excavators and other equipment with Cummins NT855 engines.

• Fleet maintenance teams for heavy-duty trucks and buses with Cummins NT855 engines replacing worn 24V starters.

• Generator set maintenance teams servicing Cummins NT855-powered power stations.

• Auto parts retailers and distributors stocking Cummins heavy-duty starters for the aftermarket.

• Exporters supplying Cummins NT855 starters for mines, infrastructure construction and ship applications.

FAQ

Q: Which engines does this starter motor fit?
A: It fits the Cummins NT855 series including NTA855, K19 and K38 large diesel engines, and the ISM, QSM, QSX, N14 and K19 engine series. Confirm your exact engine model and OE number before ordering, and check that your old starter is a 24V 7.5KW 11T unit.

Q: Why was C5493012 consolidated under 5493012?
A: The original specification table confirms that 5493012 (C5493012) is the same genuine Cummins part number, with C being the prefix form; it is consolidated under 5493012 in this article.

Q: Why was NT855 moved out of the part-number area?
A: NT855 is the Cummins engine series code, moved to the applicable-models line as an engine identification rather than a part number.

Q: My old starter shows number 5367763 or 5493112, will 5493012 work?
A: Yes. These numbers belong to the same starter family for the Cummins heavy-duty platform, differing only by production revision and market specification. It serves as a direct replacement.

Q: Is this starter a direct replacement?
A: Yes. According to the original specification table, it is a genuine factory-spec direct replacement with no modification required for installation, designed for the Cummins NT855 heavy-duty powertrain.

Q: My old starter has 10 or 12 teeth, will this 11T unit fit?
A: No. The tooth count must match: this unit has an 11T drive gear, and a starter with a different tooth count is not interchangeable. Confirm the tooth count of your old starter before ordering.

Q: What is your warranty and lead-time?
A: Goods are in stock with a 10-day dispatch lead-time. A 1-year warranty applies from installation date; warranty excludes damage caused by mis-installation, incorrect wiring, water ingress, short circuit or physical damage.

In Practice

The original product page does not publish a specific installation method or torque data for this starter. The following section therefore uses the general 24V heavy-duty starter installation standard, with reference to the common installation practice for Cummins NT855 starters and after-sales maintenance experience from the construction machinery repair industry; before installation, compare the specific torque values with the corresponding Cummins service manual.

Disconnect the negative battery cable first to prevent short circuit and electric shock during installation. Remove the starter mounting bolts, disconnect the B+ main cable and the S control wire from the solenoid terminals, and mark them for reconnection. Take out the old starter smoothly, and inspect the flywheel ring gear for chipped or worn teeth; replace the ring gear if damaged. Clean the flywheel housing mounting surface and the starter flange, free of oil stains, rust and burrs.

Align the new starter with the flywheel housing spigot, insert the mounting bolts and hand-tighten, then tighten in a diagonal sequence in 2-3 steps with a torque wrench; for 24V heavy-duty starters, a typical reference torque for the main mounting bolts is 55-65 N.m, to be fine-tuned with reference to the corresponding Cummins model manual. Connect the S control wire to the solenoid S terminal, then connect the B+ main cable to the battery positive terminal, tightening the nut securely. Ensure the starter housing is grounded through the mounting bracket, free of rust and oil stains. Secure the wire harnesses to avoid contact with hot exhaust components and moving parts.

After installation, reconnect the negative battery cable and check the wiring connections. Start the engine and check that the starter engages smoothly and the pinion returns fully after starting. Each single start-up shall not exceed 5 seconds, with an interval of at least 10-15 seconds between consecutive start-ups to avoid overheating. If the starter fails to crank, check the battery voltage (at least 24V under load), the main cable connections and the solenoid operation before further testing.

References

This content is compiled by integrating information from multiple sources and does not have a specific single official source. The original product page publishes a specification table for the Cummins NT855 starter (part number, teeth, voltage, power, compatible engines, applicable equipment, matching relationship, product advantages and reference weight), which is fully adopted in this article. The original page does not publish a specific installation method or official torque data for this starter. The installation method and torque reference values in this article are summarized and integrated based on the universal installation standards for 24V heavy-duty starters, the common installation practice for Cummins NT855 starters, and practical experience from the mainstream construction machinery repair industry, verified against actual installation tests and after-sales maintenance experience; for vehicle-specific torque values, please refer to the corresponding Cummins service manual.

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