Adapter Mitsubishi 4G63 - 6-speed manual BMW M57n GS6-53DZ HGU HGK - 240mm / 9.45"

PMC Motorsport adapter plate / conversion kit / clutch kit Mitsubishi 4G63 – 6-speed manual BMW M57N2 ZF GS6-53DZ HGU HGK E90 E91 E92 325d 330d – 240 mm / 9.45"

Adapter kit designed to mate (swap / convert) the Mitsubishi 4G63 engine (7-bolt version) with the ZF GS6-53DZ HGU / HGK 6-speed manual gearbox found in BMW M57N2 diesel models (E90 / E91 / E92 325d / 330d) as well as its GS6X53DZ HGW / HGL xDrive variant. The ideal solution for both amateur and professional motorsport.

Planning an engine swap with a Mitsubishi 4G63 into your BMW (E30, E36, E46, E34, E39, E90, E91, E92, E60, E61, E81, E82, E87)? Our adapter plate is a reliable solution. Replace an automatic transmission with a BMW manual gearbox and unlock new possibilities.

PMC Motorsport adapters not only enable converting automatic transmissions to manual in vehicles powered by the Mitsubishi 4G63 engine, but also facilitate swapping the 4G63 into BMW chassis and other platforms such as Nissan (S13, S14, S15, PS13) or Mazda RX-7 / RX-8.

Aluminum gearbox adapter plate engineered to simplify transmission installation as much as possible, avoiding radical modifications such as cutting off the entire bellhousing – only an opening for the starter motor needs to be prepared. Custom flywheels dedicated to PMC Motorsport adapter kits are crafted from lightweight aluminum with a replaceable friction face, inspected and balanced before dispatch. Flywheel designed for 240 mm clutch pressure plates (GS5-39DZ / GS6-53DZ / BZ BMW OE). Adapter plate thickness: 20 mm (0.78").

PMC Motorsport gearbox adapters are synonymous with precision and premium quality. Our design process based on 3D scanning and CMM inspection arm measurement ensures a perfect fit. Manufacturing on state-of-the-art CNC machinery guarantees ideal alignment of the engine and transmission, which is crucial for drivetrain durability.

Additional Information

Installation Manual

Bolt the flywheel to the crankshaft using the supplied bolts, torqued to 130 Nm (95.9 lb⋅ft) using threadlocker. Mount the clutch fork on the lower release bearing position (for dual-position bearings). A BMW M50 / M52 / M54 starter motor (not included) must be used with this adapter – prepare an opening for the starter motor in the transmission bellhousing. The PMC flywheel features its own ring gear, so an automatic transmission flexplate is not required.

Frequently Asked Questions

Which engines does this adapter fit?

The 4-cylinder Mitsubishi 4G63 engine in the 7-bolt version.

Which gearboxes does this adapter fit?

The 6-speed manual ZF GS6-53DZ gearbox from BMW M57N2 diesel models (E90 / E91 / E92 325d and 330d) in versions HGU (THGU) and HGK (THGK), and the ZF GS6X53DZ in versions HGW (THGW) and HGL (THGL) from BMW E9x 330d xDrive.

Do I need to cut the gearbox bellhousing?

No. The adapter is designed to eliminate the need to cut the bellhousing – only an opening for the starter motor needs to be made.

Which additional parts do I need to complete the installation?

A 240 mm pressure plate and clutch disc with a spline profile dedicated to your gearbox (for GS6-53DZ: 32.5x35-26N), clutch release bearing, clutch fork, and clutch slave cylinder dedicated to your gearbox, along with a BMW M50 / M52 / M54 starter motor (see question below). These parts are not included in the kit.

Which clutch pressure plate fits the PMC flywheel?

A 240 mm (9.45") BMW OE type pressure plate – from BMW M57 / M57N / M57N2 (including the factory GS6-53DZ pressure plate) / N54 / B58 / E46 M3 or Sachs Performance 883082.001243, as well as Sachs XTend 3000 951 952 (M57N / M57N2) and Sachs XTend 3000 951 949 (N54 / N55). ACT / Spec / Tanaci clutches are also commonly used – any aftermarket pressure plate must fit the BMW OE flywheel pattern (M57 / M57N / M57N2 / N54 / B58). Use a clutch disc matching your transmission input shaft spline, along with the corresponding release bearing setup and slave cylinder.

Which starter motor should be used?

A BMW M50 / M52 / M54 starter motor – e.g., BMW OE 12 41 1 466 102, 12 41 1 712 937, 12 41 1 715 238, 12 41 1 735 524, 12 41 1 738 602, 12 41 1 738 604, 12 41 1 740 375, 12 41 1 740 378, 12 41 1 740 379, 12 41 2 344 247, or 12 41 2 354 709. The starter motor is not included in the kit.

Does this adapter also fit the ZF 8HP automatic transmission?

Yes. The PMC Motorsport adapter plate itself is universal and fits most BMW transmissions (applies to adapters produced after 2022). When converting to a ZF 8HP automatic transmission, the standard flywheel must be replaced with a PMC Motorsport 8HP torque converter adapter plate.

What is included in the kit?

Aluminum gearbox adapter plate with mounting bolts, custom PMC Motorsport flywheel with replaceable friction surface, crankshaft bolts, pressure plate mounting bolts, and clutch ball pivot pin – replacement for BMW OE 21 51 1 223 328. The clutch disc, pressure plate, release bearing, clutch fork, and slave cylinder are not included and must be selected to match your gearbox.

Can I purchase only the adapter plate or only the flywheel?

Yes. Every component in the kit is available for purchase separately.

Does the price include customs duties for shipping outside the EU?

No. The product price and shipping quote do not include customs duties or import taxes that may apply in the recipient's country.

Can I purchase with 0% VAT?

Yes, if you are a B2B customer based outside Poland with a valid EU VAT number (verified via VIES) or if your order ships outside the EU.

Is the included manual sufficient for the complete swap?

The manual describes mating the engine to the transmission outside the car. Depending on your chassis, additional modifications may be required: engine mounts, bushings, firewall modifications, transmission tunnel clearance, and driveshaft length. We recommend professional installation.

Please note that a lightweight single-mass flywheel provides uncompromising throttle response at the expense of eliminating factory damping elements. This results in a more direct drivetrain operation, which may naturally increase gear chatter and mechanical transmission noise. This is a normal and expected characteristic in motorsport applications, resulting from the rigid mechanical connection between engine and drivetrain.