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8HP Conversions

The ZF 8HP is the most popular swap transmission on the market — sub-100-millisecond shifts, an 8-speed spread that keeps any engine in its power band, and enough factory production volume (15M+ units across 20+ brands) to keep donor transmissions cheap and easy to find. This collection covers the complete conversion: adapter kits, driveshaft adapters, transmission control, and the hardware upgrades that separate a swap that lasts from one that doesn't.

Engine Adapter Plate Flexplate + Converter Adapter ZF 8HP Transmission Driveshaft Adapter Differential

Choosing Your 8HP Variant

450 Nm 8HP45 700 Nm 8HP70 900 Nm 8HP90 Factory-rated input torque capacity (real-world capacity typically higher)

All three variants handle meaningfully more than their factory rating in practice. For most builds, the 2015+ Dodge Charger/Challenger/300-sourced 8HP70 is the practical sweet spot — abundant, inexpensive, and backed by the widest adapter and controller support of any 8HP variant.

Shop by what your build needs: engine-specific conversion kits (adapter plate + flexplate + hardware), rear driveshaft adapters, transmission control units, and protective hardware like billet pans and flexplate bolt kits — all in this collection.

Not sure which kit fits your engine and donor transmission combination? Reach out before you buy — matching the right adapter, 8HP variant, and controller up front is a lot cheaper than discovering a mismatch mid-install.

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Autosports Engineering driveshaft adapter for Dodge Mopar 8HP50 8HP70 transmission, 1310 1350 U-joint
Autosports engineering

Driveshaft Adapter Dodge Mopar 8HP50 8HP70 1310 1350 Transmission

$149.99 $119.99
11421
8HP Conversions Autosports Engineering Driveshaft Adapters Driveshafts Drivetrain Steel Driveshaft Transmission Conversions
Features: Dodge 8HP50/70 Transmission This will not work with the stock driveshaft, it is for a one piece driveshaft with a 1310 (Dana Spicer...
Autosports Engineering 2JZ 1JZ Jaguar 8HP conversion kit for 8HP70 and 8HP45
Autosports engineering

2JZ 1JZ to Jaguar ZF 8HP70 & 8HP45 Conversion Kit

$1,299.99
81005
1JZ 2JZ 8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your JZ engine utilizing a Jaguar 8HP transmission. Kit comprised of Billet Convertor Adapter plate, Billet Flex...
-8%
Autosports Engineering 2JZ 1JZ 8HP conversion kit
Autosports engineering

2JZ 1JZ to Dodge Ram Truck 8HP70 8HP90 Conversion Kit

$1,199.00 $1,099.99
81003
8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your JZ engine utilizing a Truck 8HP from Dodge/Ram Pickup. Kit comprised of Billet Convertor Adapter plate,...
-8%
Autosports Engineering 2JZ 1JZ 8HP conversion kit
Autosports engineering

2JZ 1JZ to Dodge Mopar 8HP50 8HP70 8HP90 Conversion Kit

$1,199.00 $1,099.99
81004
8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your JZ engine. Kit comprised of Billet Adapter plate, Billet Flex Plate to replace weak steel OEM...
-14%
Autosports Engineering BMW 8HP conversion kit
Autosports engineering

2JZ 1JZ to BMW ZF 8HP50 8HP70 8HP75 Conversion Kit

$1,399.00 $1,199.99
81001
8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your JZ engine. Kit comprised of Billet Convertor Adapter plate, Billet Flex Plate to replace weak steel...
-14%
Sold out
Autosports Engineering K20 K24 8HP conversion kit
Autosports engineering

K20 K24 to Jaguar 8HP45 8HP70 Conversion Kit

$1,399.99 $1,199.99
81010
8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your K Series engine. Kit comprised of Billet Flex Plate and a billet engine to transmission adapter...
-14%
Autosports Engineering K20 K24 8HP conversion kit
Autosports engineering

K20 K24 to Dodge 8HP70 8HP90 Conversion Kit

$1,399.99 $1,199.99
81009
8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your K Series engine. Kit comprised of Billet Flex Plate and a billet engine to transmission adapter...
-14%
Autosports Engineering K20 K24 8HP conversion kit
Autosports engineering

K20 K24 to BMW ZF 8HP50 8HP70 8HP75 Conversion Kit

$1,399.99 $1,199.99
81002
8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your K Series engine. Kit comprised of Billet Flex Plate and a billet engine to transmission adapter...
New
Autosports Engineering LS to 8HP conversion kit with billet adapter plate and flex plate
Autosports Engineering

LS LT to Jaguar 8HP45 8HP70 Conversion Kit

$1,299.99
81012
8HP Conversions Autosports Engineering Transmission Conversions
The Autosports Engineering LS to Jaguar 8HP conversion kit adapts a Jaguar or Land Rover ZF 8HP45 or 8HP70 eight-speed automatic transmission to any...
-8%
Autosports Engineering SR20 Dodge Ram 8HP conversion kit for 8HP70 8HP75 8HP90 8HP95
Autosports engineering

SR20 Dodge Ram 8HP Conversion Kit 8HP70/75/90/95

$1,199.00 $1,099.99
81006
8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your SR20 RWD engine utilizing a 8HP from Dodge/Ram Vehicle. Kit comprised of Billet Convertor Adapter plate,...
Autosports Engineering LS to 8HP conversion kit with billet adapter plate and flex plate
Autosports Engineering

LS LT Dodge Mopar 8HP Conversion Kit 8HP70/75/90/95

$1,299.99
81011
8HP Conversions Autosports Engineering Transmission Conversions
The Autosports Engineering LS to 8HP conversion kit adapts a Mopar/Ram ZF 8HP eight-speed automatic transmission to any Gen 3, Gen 4, or Gen...
-14%
Autosports Engineering BMW 8HP conversion kit
Autosports engineering

BMW N54 N55 N52 N53 to Dodge 8HP70 8HP90 Conversion Kit

$1,399.00 $1,199.99
14260
8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your BMW N54 N55 N53 N52 engine. Kit comprised of Billet Convertor Adapter plate, Billet Flex Plate...
Autosports Engineering 2JZ 1JZ 8HP conversion kit
Autosports engineering

2JZ 1JZ BMW N63 8HP Conversion Kit 8HP70

$1,299.99
81008
8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your JZ engine utilizing a Truck 8HP from BMW N63 V8 V12 ZF 8HP. Kit comprised of...
Autosports Engineering 2JZ 1JZ 8HP conversion kit
Autosports engineering

2JZ 1JZ to Dodge Jeep EcoDiesel 8HP70 8HP75 Kit

$1,199.99
81007
8HP Conversions Autosports Engineering Transmission Conversions
This is a complete conversion kit for your JZ engine utilizing a 8HP Dodge Jeep Maserati Eco Diesel 3.0L transmission. Kit comprised of Billet...
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