Caterpillar 296-4617 is the C6.4 engine wiring harness in braided sleeving, with the engine control module plug and the sensor and injector connectors. It is used on Caterpillar C6.4 engines. This aftermarket version has the same mounting and electrical connector as the original, so it plugs in and bolts on where the old one came off.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
Technical properties & sizes
Specifications
| Part Type |
Engine Wiring Harness |
| Replaces |
Caterpillar 296-4617 |
| Harness |
Engine wiring harness, braided sleeving |
| Engine |
Caterpillar C6.4 |
| Fits |
Caterpillar 320D, E320D and 323D excavators with the C6.4 engine |
| Condition |
New, aftermarket |
| Stat. HS-Code |
854430 |
| Country of Manufacture |
China |
Compatibility
Caterpillar machines
Caterpillar 320D, E320D and 323D excavators with the C6.4 engine
Check the part number on your old unit before ordering.
Part numbers
| Caterpillar Part No.(SPM Part No.)
|
Fits |
|
296-4617(SPM-HEP-4138)
|
Caterpillar 320D, E320D and 323D excavators with the C6.4 engine |
Applications & use cases
Intermittent faults and warning codes
Chafed, crushed or corroded wires in an engine or main harness give faults that come and go: sensor codes, a rough running engine or a machine that will not start. When several sensors fault at once, look at the harness.
Heat and rodent damage
Harnesses next to the exhaust and turbo go brittle and crack, and rodents chew the insulation on machines that stand. A new harness is quicker than repairing many wires.
Burnt or corroded plugs
Green corrosion or melted pins in the plugs cause high resistance and false readings. Replacing the harness renews every plug at once.
Fitting tips
Disconnect the batteries first, photograph or label every plug before removing the old harness, route the new one along the same clips and away from hot and moving parts, then clear the fault codes and test.
Price beat guarantee
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller |
Price |
Checked |
| FridayParts |
USD 178.49 |
24 Oct 2026 |
| SINOCMP |
USD 189.00 |
24 Oct 2026 |
| eBay (6 aftermarket sellers) |
USD 225.89 to 240.33 |
25 Oct 2026 |
| Fab Heavy Parts |
USD 408.14 |
24 Oct 2026 |
| Buy Machinery Parts |
USD 438.36 |
24 Oct 2026 |
| Spare Part Mart |
USD 142.79 |
Today |
Our price of USD 142.79 is 20% to 67% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Frequently asked questions
Is this a genuine Caterpillar part?
No. It is an aftermarket part made to fit in place of Caterpillar 296-4617. It is not made by or affiliated with Caterpillar; the Caterpillar part number is used only to show what it replaces.
Will it fit my machine?
It fits Caterpillar 320D, E320D and 323D excavators with the C6.4 engine. Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
Does it fit without changes?
It has the same mounting and electrical connector as the original. Check the plug and terminals match your old part, and test it before putting the machine back to work.