Adapter Nissan SR20 - 6-speed manual BMW M47n GS6-37DZ - 240mm / 9.45"

PMC Motorsport Adapter Plate / Conversion Kit / Clutch Kit Nissan SR20 SR20DE SR20DET – BMW M47N ZF GS6-37DZ E46 320d / E87 E90 E60 318d 320d 520d 6-Speed Manual – 240 mm / 9.45"

Adapter plate engineered to mate (swap / conversion) the Nissan SR20 (SR20DE / SR20DET) engine with the ZF GS6-37DZ 6-speed manual gearbox sourced from BMW diesel M47N / M47N2 models (incl. E46 320d, E87 118d / 120d, E90 / E91 318d / 320d, E60 / E61 520d), as well as its GS6X37DZ xDrive all-wheel drive version. An ideal solution for both amateur and professional motorsport applications.

Planning a Nissan SR20 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 Nissan SR20 engine, but also streamline SR20 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). 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

Torque the flywheel to the crankshaft using the supplied bolts to 72 Nm (53.1 lb⋅ft) with high-strength threadlocker. Mount the clutch release fork on the lower pivot position of the release bearing (if using a dual-position release bearing). An original Nissan SR20 starter motor (OE, not included) must be used to mount the adapter plate.

Frequently Asked Questions (FAQ)

Which engines is this adapter compatible with?

With Nissan SR20 engines in rear-wheel-drive (RWD) configurations: SR20DE and SR20DET.

Which gearboxes does the adapter fit?

With the 6-speed manual ZF GS6-37DZ transmission from BMW M47N / M47N2 diesel models in THES and TJEM versions (incl. E46 320d / 320Cd, E87 118d / 120d, E90 / E91 318d / 320d, E60 / E61 520d), as well as the ZF GS6X37DZ xDrive transmission. The gearbox features a 26.5x29-22N 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 240 mm clutch pressure plate and clutch disc with a spline dedicated to your gearbox (for GS6-37DZ: 26.5x29-22N), release bearing, clutch release fork, and clutch slave cylinder dedicated to your gearbox, along with an original Nissan SR20 starter motor (see question below). These parts are not included in the kit.

Which clutch pressure plate fits the PMC custom flywheel?

A 240 mm (9.45") BMW OE type clutch pressure plate – from BMW M57 / M57N / M57N2 / 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). High-performance aftermarket clutches from ACT, Spec, or Tanaci are also commonly used – any aftermarket pressure plate must match the BMW OE flywheel pattern (M57 / M57N / M57N2 / N54 / B58). For the GS6-37DZ gearbox, a 240 mm clutch disc with a 26.5x29-22N spline, a dedicated clutch release mechanism, and a slave cylinder must be used.

Which starter motor must be used?

An original Nissan SR20 (OE) starter motor. The starter motor is not included in the kit.

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, and pivot pin – BMW OE 21 51 1 223 328 replacement. The clutch pressure plate, clutch disc, release bearing, clutch fork, and slave cylinder are not included in the kit and must be selected to match your gearbox.

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

Yes. Every individual part of the kit is available separately.

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.