8HP70 Pump 2014-2019, used and ready to install. Fits the 8HP70. Ships fast from the USA.
This is a used ZF 8HP70 automatic transmission oil pump removed from a 2014-2019 Maserati Ghibli, chassis code M157, in S Q4 all-wheel-drive form. If your Ghibli is showing a whine that rises with engine speed, a long pause before Drive or Reverse engages, or slipping that only starts once the fluid is hot, and you have already ruled out fluid level, a correct original-equipment pump is the part that puts pressure back where ZF designed it.
The 8HP70 does not use the familiar gear pump bolted on the input axis and driven straight off the converter hub. ZF's patent for this layout describes a pump drive shaft running through the converter hub, a chain, and a second sprocket on the input of a rotary vane pump that sits off to the side of the main shaft. Every bit of line pressure, converter charge pressure, clutch apply oil and lube flow in the transmission starts at that vane pump. The pump housing also carries the A and B brakes on its back side, so a leak at the housing can look like a brake problem rather than a plain pressure problem.
Because a weak pump starves everything at once, it rarely sets one clean code. Slip events spread across several shift elements point toward the pump; slip on one element points toward that clutch or brake.
Pump failures on the 8HP are uncommon, so prove it first. Set the fluid level by ZF's procedure with a scan tool connected: no limp mode, car level, 2,000 rpm in Park for 30 seconds, then each range for at least 10 seconds. ZF's filling specification lists a 50-60 C level-check window for the Maserati 8HP70, which is warmer than most other applications, so checking a Ghibli at the generic temperature can leave it low. Then compare engine speed against turbine speed on engagement and stethoscope the case. Our ZF8HP pump failure guide walks through what gets wrongly blamed on the pump, including worn regulator bores and a converter that is not driving the pump shaft.
This pump came out of a 2014-2019 Maserati Ghibli S Q4 (M157) 8HP70 and is listed under the reference M157. It is a used assembly, not a rebuilt one. The 8HP70 family was built for several makers with different calibrations and revisions, so do not assume a Chrysler, Ram, Jeep or BMW 8HP70 pump is identical. Match the part number cast or tagged on your old pump against this one, or send us your year and VIN before ordering and we will check it. Other ZF 8-speed parts are on the ZF 8HP collection page, and a separate 8HP70 pump listing covers other applications.
If the transmission is apart, the ZF 8HP70 master rebuild kit supplies the seals and sealing rings to do the job once. For the bigger picture on this gearbox, see our ZF 8HP transmission guide and the rundown of ZF8HP common problems and fixes.
| Fits | 8HP70 2014-2019 |
| Part type | Pump |
| Condition | Used |
| Brand | OEM |
| Reference | M157 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It was removed from a 2014-2019 Ghibli S Q4 (M157) with the 8HP70. Compare the part number on your old pump with this one, or send us your year and VIN and we will confirm before you order.
Do not assume so. ZF built the 8HP70 for several makers with different revisions. Only install it if the part number matches your original pump.
It is a used original-equipment assembly taken from a running Ghibli transmission, not a rebuilt or new unit.
ZF LifeguardFluid 8. ZF's data sheet says only LifeguardFluid 8 or 9 approved for the transmission may be used, and ZF lists a 50-60 C level-check temperature for the Maserati 8HP70.
The converter hub O-ring, the pump drive shaft sealing ring and any housing seals you disturb, plus fresh fluid and a flushed cooler. A master rebuild kit covers the seals if the unit is fully apart.
Yes. Clear the transmission adaptations with a scan tool and drive the car through all gears at operating temperature so the control unit can relearn its shift pressures.
