Adapter Saab B204 B205 B234 B235 - 6-speed manual BMW M57n GS6-53DZ HGU HGK - 240mm / 9.45" [RWD]

PMC Motorsport adapter / conversion kit / clutch kit Saab H B204 B205 B234 B235 – 6-speed manual BMW M57N2 ZF GS6-53DZ HGU HGK 330d – 240 mm / 9.45"

Adapter kit allowing connection (swap / conversion) of the Saab H B204 B205 B234 B235 engine with the 6-speed manual gearbox ZF GS6-53DZ HGU / HGK used in BMW with M57N2 diesel engine (E9x 330d). An ideal solution for amateur and professional motorsport.

Planning a Saab H B204 B205 B234 B235 swap in your BMW (E30, E36, E46, E34, E39, E90, E91, E92, E60, E61, E81, E82, E87)? Our adapter is a reliable solution. Swap your automatic transmission for a manual BMW gearbox and unlock new possibilities.

PMC Motorsport adapters not only enable automatic to manual gearbox conversion in vehicles with the Saab H B204 B205 B234 B235 engine, but also support completing Saab H swaps in BMW, Nissan, Mazda, etc.

Aluminum gearbox adapter designed to simplify gearbox installation as much as possible without radical modifications like cutting off the bellhousing – only preparing a cutout for the starter motor is required. Custom flywheels dedicated to PMC Motorsport adapters are made of aluminum with a replaceable friction surface, tested and balanced before shipping. Flywheel designed for 240 mm pressure plate (GS5-39DZ / GS6-53DZ / BZ BMW OE).

PMC Motorsport gearbox adapters are synonymous with precision and top quality. The design process based on 3D scanning and inspection using a measuring arm ensure a perfect fit. Production on modern CNC machines guarantees ideal concentricity of the engine and transmission, which is crucial for the durability of the drivetrain.

Additional information

Installation instructions

The adapter fits Saab H engines with a block cover part number Saab OE 55557715. To install the flywheel, it is necessary to use the flexplate / starter ring gear from automatic version Saab H (not included) [TO BE COMPLETED: flexplate OE number]. Starter motor remains original Saab H. Release bearing and clutch release fork remain from your gearbox – in case of a bearing with two height positions, use the 28.5 mm position. A 240 mm clutch disc with splines dedicated to your transmission must be used.

Frequently Asked Questions

Which engines does this adapter fit?

For Saab H engines: B204, B205, B234i, and B235R – in versions with block cover part number Saab OE 55557715.

Which gearboxes does the adapter fit?

For 6-speed manual ZF GS6-53DZ gearbox from BMW with M57N2 diesel engine (E90 / E91 / E92 330d) in HGU (THGU) and HGK (THGK) versions.

Do I need to cut the gearbox bellhousing?

No. The adapter is designed to avoid cutting the bellhousing – only a cutout for the starter motor needs to be prepared.

What parts do I need to buy separately for installation?

Flexplate / starter ring gear from automatic version Saab H It is not included in the kit. A 240 mm clutch disc with splines matching your transmission is also not included in the kit.

Which clutch pressure plate fits the PMC flywheel?

240 mm (9.45") BMW OE type pressure plate – from BMW M57 / M57N / M57N2 (including stock pressure plate from GS6-53DZ gearbox) / N54 / B58 / E46 M3 or Sachs Performance 883082.001243. Clutches from ACT / Spec / Tanaci are also often used – custom pressure plates must fit the BMW OE flywheel (M57 / M57N / M57N2 / N54 / B58). Use a 240 mm clutch disc with splines matching your transmission, a dedicated release bearing kit, and a slave cylinder. The flywheel does not work with pressure plates from BMW M50 / M52 / M54 / S50 / E36 M3.

Which starter motor should be used?

Starter motor remains original – Saab H.

Can I buy only the adapter or only the flywheel?

Yes. Every component of the kit is available separately.

Does the price include customs duty when shipping outside the European Union?

No. Product price and shipping estimate do not include customs duties or extra fees that may apply in the destination country.

Can I buy with 0% VAT?

Yes, if you are a B2B customer outside Poland with an active EU VAT number (verified in VIES) or ordering for export outside the EU.

Is the included manual enough for installation?

The manual describes joining the engine and gearbox outside the chassis. Depending on the car, extra modifications may be needed: mounts, bushings, firewall, transmission tunnel, driveshaft length. Professional installation recommended.

It is worth noting that a lightweight single-mass flywheel provides uncompromising throttle response at the expense of eliminating factory dampening elements. This results in a more direct drivetrain operation, which can naturally increase the noise generated by the gearbox mechanism. This is a desirable characteristic in sports vehicles resulting from the rigid engine-to-drivetrain connection.