No Products in the Cart
Caterpillar 9T-6857 is the yellow painted variable displacement axial piston pump with a splined drive shaft, a two bolt flange, side and top ports and the load sensing control block. It is used on Caterpillar 416 and 428 backhoe loaders. This aftermarket version is made to the same mounting and connections as the original, so it fits 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.
| Part Type | Hydraulic Piston Pump |
| Replaces | Caterpillar 9T-6857 |
| Type | Variable displacement axial piston pump, load sensing |
| Drive | Splined shaft, two bolt flange |
| Machine | Caterpillar 416, 428 backhoe loaders |
| Fits | Caterpillar 416 and 428 backhoe loaders |
| Condition | New, aftermarket |
| Stat. HS-Code | 841360 |
| Country of Manufacture | China |
Caterpillar machines
Check the part number on your old unit before ordering.
| Caterpillar Part No.(SPM Part No.) | Fits |
|---|---|
| 9T-6857(SPM-HEP-5173) | Caterpillar 416 and 428 backhoe loaders |
Slow or weak hydraulics
A worn pump loses flow and pressure: functions slow down, especially when the oil is hot.
Noise
Whining or knocking from the pump points to worn gears or pistons, or cavitation from a blocked suction line.
Contamination
Metal in the filter or oil means the pump is wearing. Replace it before debris damages valves and motors.
Fitting tips
Flush the system, change the oil and filters, fill the pump case before starting, and run at low speed first.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay, aftermarket seller | USD 861.12 | 2 Nov 2026 |
| SINOCMP | USD 999.00 | 2 Nov 2026 |
| FridayParts | USD 1,075.03 | 2 Nov 2026 |
| YEM Parts | USD 1,176.33 | 2 Nov 2026 |
| Fab Heavy Parts | USD 1,193.11 | 2 Nov 2026 |
| MyMROmarts | USD 1,315.78 | 2 Nov 2026 |
| Spare Part Mart | USD 618.85 | Today |
Our price of USD 618.85 is 28% to 53% 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 416, and 1 more listed under compatible equipment. Check the old hydraulic pump is marked 9T-6857 or one of the cross references, because makers change parts between serial ranges.
On the Caterpillar 416, often 5,000 to 10,000 hours with clean fluid, much less with dirt or air in the system. It is usually changed on condition, not by hours.
Leaks from the seal or weep hole, noise or whining, overheating, or falling pressure or flow under load.
On piston pumps, yes. Fill the case through the drain port with clean hydraulic oil before the first start, or the bearings run dry.
Yes. Fill the pump and its suction line with clean fluid before the first start. Running it dry, even for a few seconds, can score it.
No. It is an aftermarket hydraulic pump made to replace the Caterpillar 9T-6857. 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.
Join and we put 200 points on your account, worth $10 off an order over $75 USD. Then a point for every dollar you spend after that. Turn points into a discount whenever you like.
Opens the Marty Mates panel. No password: you enter your email, we send a code, and that is you in with your 200 points waiting. Joining signs you up to our emails and you can leave any time from the link in any of them. See our terms and conditions.
Member deals, specials before they go public, and easy ways to stack up points. Plus a nudge when a part you bought is due, so you are not caught out mid job.
You can leave any time from the link in any email we send. See our terms and conditions.
We will only bother you when it is worth it: a member deal, a specials drop, a way to earn points faster, or a heads up that a part you bought is due.
Join Marty Mates and we put 200 points on your account, worth $10 off an order over $75 USD. Then a point for every dollar you spend after that.
No password: you enter your email, we send a code, and that is you in.
