BMW F30 2.0 GA8HP45Z 8-Speed Automatic Gearbox

Category: Bmw Gearboxes

GA8HP45Z alone isn’t enough to guarantee compatibility. There are multiple BMW versions/suffixes and different production dates. For example, BMW’s catalog shows different GA8HP45Z versions for the F30 320i, including XMQ, XDY and later variants.

Description
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Description

The GA8HP45Z is BMW’s designation for a ZF 8HP45-family 8-speed automatic transmission used in various F-series BMWs, including the F30 320i/328i 2.0 petrol. BMW parts catalogs specifically list GA8HP45Z for the F30 320i with the N20 engine.

Key specifications

Item	GA8HP45Z
Manufacturer	ZF
Type	8-speed automatic
BMW designation	GA8HP45Z
ZF family	8HP45
Typical F30 2.0 application	320i / 328i N20, depending on market/year
Drive	Rear-wheel drive version; xDrive uses a different 8HP45X variant
Rated torque class	~450 Nm
Dry weight	~79–81 kg
Gear ratios	1st 4.714 → 8th 0.667
Reverse	3.317
Gear spread	7.07:1

The 8HP45 is rated in the 450 Nm class, although the exact BMW transmission calibration and hardware specification depend on the particular application. BMW F30 2.0 GA8HP45Z 8-Speed Automatic Gearbox