// In the boxWhat’s in the kit

// OverviewStop running it on “lifetime” fluid

BMW markets the ZF 8HP as a sealed, lifetime fill. ZF, the company that actually builds the transmission, disagrees and publishes a real service interval. The fluid in your 8HP is doing the same job your engine oil does: lubricating, cooling, and keeping the clutches and valve body shifting cleanly. It wears out. Leave it long enough and you are gambling with one of the most expensive components on the car.

This kit covers a complete drain-and-fill: it drops the pan, replaces the filter, and refreshes the fluid sitting in the pan and filter with the correct ZF-spec oil. It is the single best piece of preventive maintenance you can do for an automatic BMW, and it is the smart move long before anything starts to feel wrong.

Building more than stock power?

A tune, a downpipe, bigger turbos, or E85 all push more heat and torque through the same clutches and fluid the factory rated for a stock car. On modified and track-driven cars, treat the fluid as a wear item and service it more often.

Signs your transmission is overdue:

• Laggy or hesitant shifts, especially when cold
• Sloppy, harsh, or flaring gear changes
• A groan or shudder under light throttle (torque-converter lockup)
• Louder than normal operation

Want the full walkthrough before you wrench? Read our complete guide: The ZF 8HP transmission service, start to finish.

// SpecsKit and service details

The 8HP fill is temperature-critical and most newer units require a scan tool to set the level. See our full guide for the exact procedure, temperature window, and bolt-tightening sequence.

// Cross-referenceOE & manufacturer numbers

Listed for cross-reference only. Always confirm the correct kit against your VIN and exact transmission variant.

// FitmentDoes this fit your BMW?

This kit fits the ZF 8HP across a wide range of BMW models. Tap your series to expand it, then confirm by VIN before ordering. The newest 8HP units may require OEM scan-tool routines for the fill.

2 Series F22 / F23 / G42

3 Series F30 / F31 / F34 GT / G20 / G21

4 Series F32 / F33 / F36 / G22 / G23 / G26

5 Series F10 / F11 / G30 / G31

5 Series GT F07 Gran Turismo

6 Series F12 / F13 / F06 / G32 GT

7 Series F01 / F02 / G11 / G12

8 Series G14 / G15 / G16

Z4 E89 / G29

X1 E84

X3 F25 / G01

X4 F26 / G02

X5 E70 / F15 / G05

X6 E71 / F16 / G06

X7 G07

(to 8/2020) covers production up to August 2020 only. (not S1CEA) means it does not fit cars optioned with the S1CEA Energy Recovery System. Confirm fitment and the exact kit by VIN before ordering.

Use only the specified ZF-approved fluid and do not add aftermarket additives. Set the transmission oil level exactly to specification at the correct temperature; an incorrect level can damage the transmission. This kit performs a drain-and-fill, which refreshes the fluid in the pan and filter rather than the entire system. Confirm the correct kit and procedure for your exact transmission before installation.