PMC Motorsport Race Stage 1 – Clutch Kit Mercedes-Benz M112 V6 / M113 V8 – BMW M57 ZF GS5-39DZ E39 525d 530d / E46 330d 5-Speed Manual – 240 mm / 9.45" – Sachs Performance 883082.001243 – max. 800 Nm / 590 lb⋅ft

Important: Before purchasing, please check the part number of the automatic starter ring gear / flexplate in your Mercedes-Benz engine. M112 / M113 engines are equipped with two types of flexplates – this adapter is compatible exclusively with the Mercedes-Benz OE 112 032 02 47 flexplate.

Complete Race Stage 1 clutch kit designed to mate (swap / conversion) the Mercedes-Benz M112 V6 (2.4, 2.6, 2.8, 3.2, 3.7) or M113 V8 (4.3, 5.0, 5.4, and 5.4 Kompressor) engine with the ZF GS5-39DZ 5-speed manual gearbox sourced from BMW diesel M57 models (E39 525d / 530d, E46 330d). The kit includes an adapter plate, a custom PMC Motorsport flywheel, a reinforced Sachs Performance 883082.001243 clutch pressure plate (non-SAC / without self-adjustment), and a PMC 240 mm sintered clutch disc with 28x35-10N spline. The maximum torque capacity of the kit is 800 Nm (590 lb⋅ft). The heavy-duty GS5-39DZ transmission (rated for 1000+ Nm) paired with the Race Stage 1 kit is engineered for motorsport – drifting, track days, and high-power builds.

Planning a Mercedes-Benz M112 / M113 engine swap into your BMW (E30, E36, E46, E34, E39, E90, E91, E92, E60, E61, E81, E82, E87)? Our adapter plate is a proven, reliable engineering solution. Replace an automatic transmission with a robust BMW manual gearbox and unlock new potential.

PMC Motorsport adapters not only facilitate automatic-to-manual conversions in cars powered by the Mercedes-Benz M112 / M113 engine, but also streamline M112 / M113 swaps 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, eliminating radical modifications such as cutting off the bellhousing – only preparing the starter motor opening is required. Custom flywheels dedicated to PMC Motorsport adapters are machined from aluminum with a replaceable friction surface, fully inspected and balanced prior to dispatch. Flywheel engineered for a 240 mm pressure plate (GS5-39DZ / GS6-53DZ / BZ BMW OE). Flywheel weight: 5.45 kg (12.0 lbs), adapter thickness: 20 mm (0.78").

PMC Motorsport gearbox adapter plates represent precision engineering and premium quality. A 3D scanning-based design process and CMM measuring arm quality inspection ensure an exact fit. Manufacturing on state-of-the-art CNC machinery guarantees flawless concentricity and alignment between engine and transmission, which is critical for drivetrain longevity.

Additional Information

Installation Instructions

To mount the flywheel, it is necessary to use the automatic flexplate / starter ring gear from the Mercedes-Benz automatic version OE 112 032 02 47 (not included). Crankshaft bolts are included in the kit. An original Mercedes-Benz M112 / M113 starter motor (OE, not included) must be used to mount the adapter plate. Mount the clutch release fork on the lower pivot position of the release bearing (if using a dual-position release bearing). Gearboxes for petrol engines (ZF-5, Getrag 250G / 420G) and diesel engines (GS5-39DZ) share the same bolt pattern but have a different tilt/mounting angle on the adapter plate – the GS5-39DZ gearbox must be bolted in the dedicated diesel position. If the gearbox sits at an incorrect angle after tightening, reposition and correct the assembly. The release bearing, clutch fork, and clutch slave cylinder are not included in the kit and must be selected to match your gearbox.

Frequently Asked Questions (FAQ)

Which engines is this kit compatible with?

With Mercedes-Benz M112 V6 (2.4, 2.6, 2.8, 3.2, 3.2 Kompressor, 3.7) and M113 V8 (4.3, 5.0, 5.4, M113K 5.4 Kompressor) engines that utilize the automatic starter flexplate / ring gear Mercedes-Benz OE 112 032 02 47. Because these engines were manufactured with two distinct flexplate versions, please verify the part number on your engine before ordering.

Which gearboxes does the kit fit?

With the 5-speed manual ZF GS5-39DZ transmission from BMW M57 diesel models in THBA, THBC, THBG, THBK, and THBM configurations (E39 525d / 530d, E46 330d). The input shaft features a 28x35-10N spline.

Does the gearbox bellhousing require cutting?

No. The adapter is specifically designed to eliminate cutting the bellhousing – only preparing the starter clearance opening is necessary.

What additional components are required for complete installation?

A release bearing, clutch release fork, and clutch slave cylinder dedicated to the GS5-39DZ gearbox, an automatic starter flexplate Mercedes-Benz OE 112 032 02 47, and an original Mercedes-Benz M112 / M113 starter motor (see question below). These parts are not included in the kit.

Which clutch is included in the package?

A reinforced Sachs Performance 883082.001243 (88 308 200 1243) pressure plate measuring 240 mm (9.45") without self-adjustment, accompanied by a PMC 240 mm sintered paddle clutch disc with a 28x35-10N spline (10 teeth) engineered for the ZF GS5-39DZ gearbox.

What is the torque rating of the Race Stage 1 kit?

The maximum torque capacity of this kit is 800 Nm (590 lb⋅ft).

Is this kit suitable for a daily-driven car?

The Race Stage 1 kit with a sintered clutch disc is intended primarily for motorsport applications – clutch engagement is sharper and more aggressive than with an organic disc. For street cars driven daily, we recommend our Stage 1 kit equipped with a Sachs XTend clutch.

Can I run an alternative clutch pressure plate?

Yes. The PMC Motorsport flywheel is engineered to accept BMW OE 240 mm pressure plates – from BMW M57 / M57N / M57N2 / N54 / B58 / E46 M3 or Sachs Performance 883082.001243. High-performance aftermarket clutches from ACT, Spec, or Tanaci can also be fitted, provided the custom pressure plate matches the BMW OE flywheel pattern (M57 / M57N / M57N2 / N54 / B58). For the GS5-39DZ gearbox, you must use a 240 mm clutch disc with a 28x35-10N spline.

Which starter motor must be used?

An original Mercedes-Benz M112 / M113 (OE) starter motor. The starter motor is not included in the kit.

Can I use this adapter with a 6-speed GS6-53DZ / GS6-53BZ gearbox?

Yes. The PMC Motorsport adapter plate itself is universal and fits the majority of BMW gearboxes (applies to adapters produced after 2022). If you switch to another BMW gearbox in the future, you only need to change the flywheel and clutch disc.

Is this adapter compatible with the ZF 8HP automatic transmission?

Yes. The PMC Motorsport gearbox 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 manual flywheel is replaced with a PMC Motorsport 8HP torque converter adapter plate.

What is included in the kit?

Aluminum gearbox adapter plate with mounting hardware, custom PMC Motorsport flywheel with replaceable friction surface, crankshaft bolts, pressure plate mounting bolts, flywheel centering sleeve, pivot pin / clutch fork bracket – BMW OE 21 51 1 223 328 replacement –, Sachs Performance 883082.001243 clutch pressure plate, and PMC 240 mm 28x35-10N sintered clutch disc. The release bearing, clutch fork, and slave cylinder are not included.

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

Yes. Every individual part of the kit is available separately – including the adapter plate paired with the custom flywheel, without the clutch assembly.

Does the price include customs duty for shipments outside the European Union?

No. The product price and shipping quote do not cover import customs duties, tariffs, or local import taxes assessed by the destination country.

Can I place an order with 0% VAT?

Yes, if you are a registered B2B customer outside Poland holding an active EU VAT number (validated via the VIES system), or if your order is being exported outside the European Union.

Is the included installation manual sufficient to complete the conversion?

The manual details the mechanical mating of the engine and transmission outside the vehicle body. Depending on the vehicle platform, additional custom fabrication may be necessary: custom engine mounts, bushings, firewall adjustments, transmission tunnel modification, propshaft balancing and length alteration. Professional installation is highly recommended.

Please note that a lightweight single-mass flywheel provides razor-sharp throttle response at the expense of eliminating factory dual-mass damping elements. This yields a much more direct drivetrain connection, which may result in an audible increase in transmission gear chatter. This is a normal, inherent, and often desirable operational characteristic in competition and motorsport vehicles.