What The TM2802 Is
The TM2802 is a direct replacement 24V starter motor built for Cummins 6CT and 6CTA diesel engines. It is a high-torque unit, which matters on a six-cylinder diesel that needs real cranking speed to fire in the cold. The solenoid, drive and motor come as one assembly, so you are replacing the whole unit rather than rebuilding in the bay.
Voltage is the first thing to confirm. This is a 24V starter. Putting a 24V unit on a 12V system gives you slow, lazy cranking that looks like a bad battery bank, and the reverse cooks the motor windings in short order. Check the tag on the old starter and the voltage of the battery bank before you order anything.
Current draw and connector pinout follow the original layout, so the factory cables and control wire land where they should without splicing or adapters. That keeps the install to a cable-off, bolt-off, bolt-on job on most 6CT and 6CTA installations. Confirm the mounting flange bolt pattern and nose length against the old unit before the new one goes up.
Why These Numbers Cross
TM2802 crosses to Delco Remy 10461169 and 10461171. Those numbers cover the same 24V heavy-duty starter family used behind Cummins 6CT and 6CTA engines. The differences between the original numbers are typically supersession and production-run changes rather than a change in the mounting flange, drive engagement or electrical rating, which is why one aftermarket SKU covers the group.
Where crosses go wrong is rotation, nose housing and the number of mounting bolts. Two starters can share a catalogue listing and still differ in how the pinion sits relative to the ring gear. Pull the old unit, wipe the tag clean, and read the number off the case. That number, not the truck's model year, is what tells you whether this cross applies.
These interchange numbers are listed for identification only. PartStop is not affiliated with, endorsed by, or authorised by Delco Remy or Cummins. A cross-reference is a starting point — confirm fitment by VIN or by matching the number stamped on the starter you are pulling off.
How These Starters Fail
Most 24V diesel starters die from heat and repeated cycling rather than age alone. Symptoms build up: slower cranking when hot, a single click with good battery voltage, or the solenoid pulling in but the pinion never engaging. Burnt contacts inside the solenoid are common on trucks that idle, shut down and restart all day. Voltage drop across the main cable tells you a lot before you condemn anything.
Before ordering, load-test the batteries and check both battery cable ends and the engine ground strap. A corroded ground will kill a new starter as fast as it killed the old one. Also inspect the flywheel ring gear teeth through the inspection port — chewed teeth will destroy a new drive within weeks and are the real root cause more often than mechanics expect.
TM2802 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to TM2802. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| Delco Remy | 10461169, 10461171 |
Frequently asked questions
Will TM2802 replace Delco Remy 10461169 or 10461171?
TM2802 is listed as an aftermarket cross for both 10461169 and 10461171 on Cummins 6CT and 6CTA 24V applications. Those OE numbers are listed for identification only. Confirm by reading the number stamped on the starter you are removing, or verify by VIN, before you order.
Is this a 12V or 24V starter?
It is 24V. Do not fit it to a 12V system. If you are unsure, check the battery bank configuration and the voltage marked on the tag of the starter currently on the engine. A voltage mismatch shows up as slow cranking or a burnt motor, not as a clean no-start.
My new starter clicks but will not crank. What do I check first?
Check battery state of charge and voltage drop across both the positive cable and the engine ground strap while cranking. A drop over about half a volt on either side points to cable or ground trouble, not the starter. Also verify the control wire is seated on the correct solenoid terminal.
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