Engine Adapter Kits

Shop ZF 8HP engine adapter kits for BMW, Chevrolet LS/LT, Toyota JZ, Nissan RB and SR20, Ford, Honda K-series, Dodge Hemi, Mazda rotary, Subaru and other swap projects. Start with the exact engine code and the exact ZF 8HP transmission model, then confirm the adapter, flexplate or drive plate, torque converter, starter, controller, cooling and driveline plan before you order.

Find your engine-to-8HP adapter path

Product-specific information takes priority over this category overview. If your engine family is not listed, send the details and we will point you to the closest path.

Which 8HP adapter kit do you need?

The adapter only solves one problem: mating your engine's bellhousing pattern to the ZF 8HP. Everything around it is build-specific. Use these three questions before you choose a kit.

What exactly is the engine? Engine family is not enough. Record the exact engine code, crank flange pattern and starter position, because variants inside the same family can differ.
What exactly is the gearbox? Confirm the full ZF 8HP model (for example 8HP45, 8HP50, 8HP70, 8HP75, 8HP76, 8HP90, 8HP95) and the donor vehicle. An “8HP” label alone does not identify the bellhousing, input, output or mechatronics you actually have.
What is already in the build? Adapter, flexplate or drive plate, converter, starter, controller and harness, mounts, cooling, shifter, output flange and tailshaft all need to agree. Compare the individual product listing for what is included.

Popular starting points by intent:

LS/LT V8 into a rear-drive or conversion chassis: Chevrolet LS/LT to ZF 8HP, then plan the flexplate and TCU and harness.
JZ, RB or SR20 turbo builds: 1JZ/2JZ, RB or SR20, then confirm shifter and control and cooling.
Ford, Hemi, K-series, rotary or Subaru conversions: Ford modular, Hemi, Honda K20/K24, Mazda rotary or Subaru.

Adapter kit or bellhousing kit?

Both approaches mate a non-factory engine to a ZF 8HP, but they package the solution differently. An adapter kit usually presents an adapter plate and associated hardware matched to a given engine family; a bellhousing-style kit replaces or reworks the housing side of the joint. Which one suits you depends on the engine, the gearbox and the packaging space you have. Review the HPR ZF 8HP kits and bellhousings guide before deciding.

Bellhousing guide: ZF 8HP kits and bellhousings explained.

What else to plan with the adapter

An adapter kit is one line item in a conversion. Budget and plan the supporting systems at the same time so nothing arrives late or mismatched:

ZF 8HP gearboxes — confirm the exact model you are adapting to.
Flexplates and drive plates for the engine-to-converter joint.
TCU controllers and harnesses for the chosen control strategy.
Output flanges and driveline to connect to the vehicle.
Cooling and filtration for oil lines, coolers and heat control.
Shifters and controls for the selector and paddle interface.
Transfer case and AWD to RWD conversion hardware where the build needs it.

Map the whole job before you buy one part: 8HP Swap Buyer’s Checklist, 8HP Swap Parts Checklist, ZF 8HP transmission swap parts list and common 8HP retrofit mistakes. Not sure which gearbox to start with? Read which ZF 8HP transmission should you buy and compare the range in ZF 8HP transmissions.

What to confirm before buying an 8HP adapter kit

Engine identity: record the exact engine code, crank pattern and starter arrangement.
Transmission identity: confirm the full ZF 8HP model and donor details. An “8HP” label alone is not enough.
Included components: review the product listing for the adapter, hardware and any stated included parts. Do not assume a flexplate, converter or starter is included.
Vehicle packaging: plan tunnel clearance, sump clearance, mounts, tailshaft, output flange and exhaust routing with your installer.
Control strategy: choose the TCU and harness around the exact gearbox, engine management and vehicle electronics.

Work through the 8HP Swap Guides and the identify your ZF 8HP transmission steps if the gearbox model is not confirmed yet.

ZF 8HP adapter kit FAQ

Does one adapter kit fit every ZF 8HP?

No. Confirm the engine, exact transmission model, donor details and the individual product listing. Similar gearbox names or bolt patterns do not prove compatibility.

Is an adapter the complete swap kit?

Not necessarily. A complete conversion can also require a suitable gearbox, flexplate or drive plate, torque converter, controller and harness, mounts, cooling, shifter, output hardware and a vehicle-specific tailshaft. Check what the selected product actually includes.

How do I choose between an LS/LT, JZ, RB or SR20 adapter?

Start from the engine you are actually running, not the power target. Match the adapter to the exact engine code, then confirm the ZF 8HP model, starter, converter and control plan. Each engine family has its own product listing with the details to confirm.

Can I keep my factory ZF 8HP and add an adapter?

Often the gearbox is reused, but the adapter only addresses the engine-to-bellhousing joint. Control electronics, cooling, shifter, output and driveline still need to suit your chassis. Confirm the exact transmission model before assuming it fits the plan.

What is the difference between an adapter kit and a bellhousing kit?

An adapter kit typically presents a plate and hardware matched to an engine family, while a bellhousing-style kit reworks or replaces the housing side of the joint. See the bellhousings guide for the differences.

What details should I send before ordering?

Send the vehicle, engine code, exact ZF 8HP model, donor vehicle, intended use and any parts already selected. Photos of the engine rear face, gearbox bellhousing and available tunnel space can help clarify the build.

Need help choosing an adapter kit?

Adapter maths beats adapter roulette. Send your engine code, exact ZF 8HP model and intended use, and we will review the combination before you order. Ask 8HP.Shop to check your engine and gearbox details.