ZF 8HP Gearboxes

Shop ZF 8HP gearboxes for swaps, replacement planning and performance builds. Every listing states its recorded kilometres, so you can compare condition openly, then match the transmission code and donor details to your engine, chassis and electronics before ordering.

8HP45 or 8HP76: which gearbox suits your build?

This collection normally carries the two most popular starting points for an 8HP conversion: the factory-fit 8HP45 and the heavier-duty 8HP76. Both sit in the ZF 8HP family, but they are not interchangeable without confirming the complete conversion plan.

• 8HP45: a widely used factory-fit unit across many BMW applications and a sensible entry point for standard and moderate-power conversions where the transmission code already matches the vehicle.
• 8HP76: the heavier-duty variant. The 8HP model comparison and the high-power transmission guide both point to 8HP76 for serious power builds.

Do not pick on the badge alone. Record your engine, chassis, target power level and preferred gearbox code, then confirm that the bellhousing or engine adapter, flexplate, output flange and controller path all agree before you order.

How to read a used 8HP listing

A used gearbox is only comparable when the important details are on the table. Confirm these points on the individual listing or with our team before committing:

1. Recorded kilometres. Lower recorded kilometres are generally the safer starting point, but the number is only meaningful next to the known condition of the unit.
2. Transmission tag and code. Confirm the full 8HP designation and donor vehicle, not just "8HP". A photo of the transmission tag is the fastest way to identify the exact unit.
3. What is included. Check whether the listing is the gearbox alone or also includes the pan, valve body, mechatronics or output hardware.
4. Fluid and service history. Ask what is known about the oil, filter and service history so you can plan a fluid and filter service alongside the conversion.
5. Output and driveline type. Confirm RWD or AWD requirements, the output flange pattern, tailshaft and mount plan for your chassis.
6. Condition evidence. Request photos, close-ups and any inspection notes that apply to the specific unit you are buying.

How to choose a ZF 8HP gearbox

1. Confirm the exact transmission code. "8HP" is a family, not one interchangeable gearbox. Record the full code and donor vehicle details.
2. Match the engine interface. Check the bellhousing, adapter and flexplate path against your engine and chassis. Browse engine adapter kits alongside the gearbox.
3. Plan the electronics. Confirm that the chosen controller and harness supports the exact transmission, ECU and vehicle setup.
4. Plan the output and driveline. Check RWD or AWD requirements, output flange, tailshaft, mount and shifter before checkout.
5. Do not forget cooling and service parts. Build the cooling and filtration plan around the vehicle, intended use and available packaging.

Buying a gearbox for an 8HP swap

Start with the engine, chassis, transmission code, ECU, RWD or AWD layout and intended use. Then compare the gearbox listing with the adapter, controller, driveline and cooling requirements as one system. A cheap gearbox becomes expensive quickly when the rest of the conversion does not match.

Use the 8HP Swap Guides to map the package, or browse the 8HP Parts Catalog for the supporting categories. Sorting out the gearbox itself? Read the 8HP gearboxes Australia buyer guide before you choose.

Plan the rest of the 8HP package

• Engine adapter kits and flexplates to join the gearbox to your engine.
• TCU controllers and harnesses to run the transmission with your ECU.
• Output flanges and driveline plus transfer case and AWD/RWD conversion parts.
• Cooling and filtration, shifters and controls, and internals and clutch parts for the finished build.

8HP gearbox FAQ

Are all ZF 8HP gearboxes interchangeable?

No. Mechanical interfaces, outputs, electronics and controller support can vary between 8HP variants. Confirm the exact code and the complete conversion requirements before ordering.

What is the difference between an 8HP45 and an 8HP76?

They are different units in the same ZF 8HP family. The 8HP45 is a widely used factory-fit gearbox, while the 8HP76 is the heavier-duty option that the 8HP.Shop high-power guides point to for serious builds. Confirm the code, bellhousing or adapter, output and controller for your specific vehicle.

Does recorded mileage matter on a used 8HP?

It is one useful indicator among several. Compare the recorded kilometres with what is known about the unit's service history, the included parts and the condition evidence in the listing, then plan a fluid and filter service with the conversion.

What information should I send for a gearbox recommendation?

Send the engine, chassis, current transmission, target gearbox code if known, ECU, RWD or AWD layout and intended use. Photos of the transmission tag can help identify the exact unit.

What else is normally needed for an 8HP conversion?

The plan can include an engine interface, controller and harness, shifter, output and tailshaft parts, mounts and cooling. The exact list depends on the vehicle and transmission.

Can 8HP.Shop help me identify the right gearbox before I order?

Yes. Send your build details through the contact page and the team will help confirm which listing suits your engine, chassis and electronics before you commit.

Not sure which listing belongs in your build? Ask 8HP.Shop before ordering. Gearbox codes beat guesswork.