Technical reference · checked September 5, 2026
ZF 8HP55 guide
Ratios, service fluid and identification for the variants listed below. Check the source vehicle before choosing a donor.
What it is
A ZF eight speed automatic transmission family. Verified identifiers: 8HP55A, 8HP55AHIS, 8HP55FL, 8HP55FLHIS.
ZF identifier source- Generation
- Not verified
- Factory input torque (Nm)
basic petrol: 500; basic diesel: 580
8HP55A datasheet BASIC columns only. Adjacent boosted (8HP70) columns list 700 Nm; not transferred to a generic 8HP55/8HP70 rating.
Technical source · p. 4, Capacity, Tmax engine- Gear ratios, example only
forward: 4.714, 3.143, 2.106, 1.667, 1.285, 1, 0.839, 0.667; reverse: -3.317
8HP55A transmission schematic only; decimal commas converted to decimal points; reverse sign retained.
Technical source · p. 3, gear/ratio row- Weight (kg)
min: 135.2; max: 142
8HP55A target weight, dependent on equipment and converter; source does not explicitly label this as dry or wet.
Technical source · p. 4, Weight- Service fluid
ZF LifeguardFluid 8
Service-fill approval only for TE-ML 11 listed exact variants: 8HP55A, 8HP55AHIS, 8HP55FL, 8HP55FLHIS. Match vehicle manufacturer part number and relevant footnotes; separate differential oil is not ATF.
Technical source · Approved lubricants for service fills, p. 4- Dimensions and fluid capacity
- Not verified
- Applications
- A complete vehicle application list is not verified.
Before choosing a donor
Check the full tag, engine mounting face, converter, output, electronics and donor drivetrain. A matching family name is not enough.
Send us identification photosC&C availability and Dodson parts
C&C availability for this model is not confirmed. Dodson’s shared catalog groups are not exact variant fitment approval.
How Dodson components fit into a build