Starter 2873K404 12V 3.0KW 10T Perkins 1104D 1106C

Product Overview

The 2873K404 is a heavy-duty starter motor delivering 12V output at 3.0KW with a 10-tooth drive gear, engineered for Perkins 1104D, 1106C and 1106D engines, with the page heading also listing the 1006-60T and Sisu Diesel 645D applications. This unit, cross-numbered as 2872K404 and 63280040, matches the original starting-system specification for the Perkins engine platform.

Fitted with reduction-gear drive design, this brand-new engine starter is stocked in-house with a 1-year warranty and 10-day dispatch lead-time. The factory-correct rating ensures reliable cold and hot cranking of the Perkins diesel engine.

Key physical specs: net weight 6.0 kg, overall dimensions 240 x 120 x 160 mm, supplied inside neutral kraft inner carton. Gross weight is not stated on the product page.

The Perkins Engine Platform and 12V Starting System

Perkins 1104D, 1106C and 1106D engines run standard 12V starting systems with factory-spec starter motors. The starter motor numbering spans the Perkins OE numbers (2873K404, 2872K404, 63280040), the Lester number 18941, the Lucas LRS/STR series, and the M/T letter series, all referring to the same starting-system family.

It is critical to verify the drive-gear tooth count on your old starter: this unit uses a 10-tooth drive gear. Starters with a different tooth count or mounting pattern are not interchangeable with this unit. A starter with the wrong tooth count will not engage properly with the flywheel ring gear.

The 12V 3.0KW rating matches the original starting-system specification. 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 2873K404 family, before placing an order.

Technical Specifications

Compatibility and Cross Reference

This starter motor fits Perkins 1104D, 1106C and 1106D engines; the page heading also lists the Perkins 1006-60T and Sisu Diesel 645D applications. Do not rely solely on the brand name for fitment validation; always compare the original part number, mounting holes, gear teeth and connector configuration before ordering.

Multiple Perkins, Lester, Lucas and aftermarket OE numbers appear across production batches and regional market specifications for this same starter motor family. If your original unit bears one of the listed cross-reference numbers, 2873K404 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 label on your old starter: confirm it is rated for 12V 3.0KW. Other ratings are not interchangeable.

• 2. Count the drive-gear teeth: this unit uses 10T (10-tooth). Starters with a different tooth count, including 8T or 9T units, are incompatible.

• 3. Confirm the platform is a Perkins 1104D / 1106C / 1106D 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 2873K404 family.

• 5. Weight cross-check: genuine matching unit weighs approximately 6 kg net; significant weight difference indicates wrong assembly.

Application Scenarios

• Agricultural machinery repair shops servicing Perkins-powered tractors, combines and irrigation equipment.

• Industrial equipment maintenance teams maintaining Perkins generator sets and construction machinery.

• Auto parts exporters and distributors stocking heavy-duty starting-system components for the Perkins engine market.

• Used equipment traders refurbishing pre-owned Perkins-powered machinery for global secondary markets.

• Cost-conscious buyers looking for a reliable new starter motor at a competitive price.

FAQ

Q: Which engines does this starter fit?
A: It fits Perkins 1104D, 1106C and 1106D engines, with the page heading also listing the Perkins 1006-60T and Sisu Diesel 645D applications. Confirm your engine model and OE number before ordering.

Q: My old starter shows OE number 2872K404 or 63280040, will 2873K404 work?
A: Yes. These numbers belong to the same starter motor family for the Perkins platform, differing only by production revision and market specification. It serves as a direct replacement.

Q: Can I fit this starter onto other engine brands?
A: No. Different engine families use different starter mounting patterns, drive-gear tooth counts and terminal layouts. Confirm your engine model before ordering.

Q: What is the correct operation after installation?
A: The engine should crank briskly and consistently on cold and hot starts. If the starter spins but the engine does not crank, check the drive-gear engagement and ring gear condition.

Q: What torque should the mounting bolts be tightened to?
A: For the Perkins platform, tighten the mounting bolts in a crisscross sequence to the Perkins standard torque of 25-37 N.m, and the main power nut to 9.8-12 N.m. Refer to the model-specific workshop manual for exact values.

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

For technicians working on Perkins 12V engines: The core installation principles are to disconnect the power supply first, clean and seal the mounting surfaces, fasten bolts and make electrical connections according to the specified torque, and conduct a test run finally. Use new gaskets or sealant, verify flywheel ring gear compatibility, and ensure reliable electrical connections.

Wear safety goggles and gloves, and disconnect the negative battery terminal first to prevent short circuits. Confirm the starter motor model is compatible with the engine, and check the drive gear tooth count and rotation direction. Clean the flywheel housing and starter motor flange surfaces to remove oil stains, rust and old sealant. For engine models with oil-filled flywheel housings, install the spacer with the locating lip facing the flywheel housing, place the new gasket on the flange surface, and apply a continuous 2.0mm-wide sealant bead (Perkins genuine POWERPART Hylosil recommended) near the locating boss to prevent oil leakage.

Align the starter motor mounting holes with those on the flywheel housing and push the starter motor in slowly to ensure smooth meshing between the drive gear and the flywheel ring gear. Use a torque wrench to tighten the 2-3 mounting bolts in a crisscross and symmetrical sequence to the Perkins standard torque of 25-37 N.m (refer to the model-specific manual for exact values); the use of impact wrenches for forced tightening is strictly prohibited. Manually rotate the crankshaft to confirm there is no starter motor jamming or gear interference.

Connect the main power supply first, followed by the control circuit. Clean the main power cable positive terminal with a wire brush, install a new washer, and tighten the nut to approximately 9.8-12 N.m, ensuring the terminal crimping surface faces away from the starter motor. The main power cable gauge must not be less than 4AWG. Fully insert the control terminal (S terminal) and secure the wiring harness with a clamp to prevent loosening. Reconnect the negative battery terminal, ensuring the ground wire is securely connected without rust.

Carry out a no-load test: power on the system and short-circuit the solenoid switch to confirm the starter motor runs smoothly without abnormal noise and the gear retracts properly; the short-circuit duration must not exceed 5 seconds. Start the engine 2-3 times and check that the starter motor operates without dragging or slipping and disengages from the ring gear immediately after startup. Recheck bolt tightness, inspect for oil leakage, and ensure the terminals are not overheated.

References

The core content of the installation procedures and torque specifications above is derived from Perkins original technical documentation, integrated with industry universal specifications. Authoritative sources include the Perkins 1000 Series Workshop Manual (Starter Motor; To Remove And To Fit, Section 23B.03), Perkins POWERPART parts technical specifications, the Perkins Electrical System Installation Manual (TSL4068, including the 4AWG minimum cable gauge requirement), the Perkins 4000 Series Workshop Manual (TSL4184) and Perkins Engine General Safety Manual (SCBU9075-01). All operations must be based on the Perkins genuine workshop manual for the corresponding engine model; torque and sealing requirements vary across different models and operation based on experience alone is strictly prohibited.

About the Author