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Caterpillar 581-2664 is the 24 volt electric linear actuator: the black motor and gearbox housing, the aluminium tube with the extending rod and rod end, and the cable with its sealed plug. It is used on Caterpillar 950M to 972XE wheel loaders. This aftermarket version is made to the same mounting and connections as the original, so it fits where the old one came off.
The same part is also sold as Caterpillar 630-0153.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Electric Actuator |
| Replaces | Caterpillar 581-2664 |
| Voltage | 24 V |
| Type | Electric linear actuator |
| Machine | Caterpillar 950M, 962M, 966, 966M, 966XE, 972, 972M, 972XE |
| Cross references | Caterpillar 630-0153 |
| Fits | Caterpillar 950M, 962M, 966, 966M, 966XE, 972, 972M and 972XE wheel loaders |
| Condition | New, aftermarket |
| Stat. HS-Code | 850131 |
| Country of Manufacture | China |
Caterpillar machines
Check the part number on your old unit before ordering.
| Caterpillar Part No.(SPM Part No.) | Fits |
|---|---|
| 581-2664(SPM-HEP-5230) | Caterpillar 950M, 962M, 966, 966M, 966XE, 972, 972M and 972XE wheel loaders |
| 630-0153(SPM-HEP-5230) | Caterpillar 950M, 962M, 966, 966M, 966XE, 972, 972M and 972XE wheel loaders |
Function stops working
When the actuator motor or gearbox fails, the function it drives stops moving or moves only part of its stroke.
Slow or jerky travel
Worn gears and a tired motor make the rod move slowly or in steps, and the machine may log a position fault.
Water in the motor
A cracked housing or damaged cable lets water into the motor and it seizes. Replace the actuator rather than drying it out.
Fitting tips
Disconnect the battery, note the rod position, fit the new actuator with new pins and clips, then cycle it through its full stroke before work.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| FridayParts | USD 439.95 | 3 Nov 2026 |
| eBay, aftermarket seller | USD 448.50 | 3 Nov 2026 |
| eHeParts | USD 460.00 | 3 Nov 2026 |
| SINOCMP | USD 599.00 | 3 Nov 2026 |
| Spare Part Mart | USD 340.79 | Today |
Our price of USD 340.79 is 23% to 43% 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.
Yes, it was made for the Caterpillar 950M, and 7 more listed under compatible equipment. Check the old electric actuator is marked 581-2664 or one of the cross references, because makers change parts between serial ranges.
On the Caterpillar 950M, it depends on hours and working conditions. Follow the machine service schedule, and change it when it shows wear rather than waiting for it to fail.
Leaks, noise, loss of performance, or visible wear compared with a new part. If in doubt, measure it against the sizes in the specifications.
Keep it until the new one is fitted and running. It is the quickest way to compare sizes, connectors and mounting if anything looks different.
Match the part number on the old electric actuator to Caterpillar 581-2664 or a number in the cross reference table. If the number is worn off, compare the sizes in the specifications.
No. It is an aftermarket electric actuator made to replace the Caterpillar 581-2664. It is not made by the original manufacturer; the number only shows what it replaces.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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