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We’ve completed our BMW E46 6-speed transmission testing and are now ready to take orders of these long-awaited kits. Our transmission kits are 100% proudly made in the USA. Anticipated lead time to ship orders is less than 30 days.

We now have a parts package that bolts an E46 6-speed transmission into the NA and NB Miata chassis. Adapter plates and flywheels are available to work with both the Mazda BP and Honda K series engines. These same adapters and flywheels will be available separately for those completing one-off projects.

For BMW's equipped with a Getrag 420G transmission which is known as an S6S420G transmission in the BMW world there is a common occurrence for some of these transmissions to suffer from a sloppy shifter when shifting into 5th gear and reverse. Part of the problem is the sealing cover used by Getrag. Find many great new & used options and get the best deals for BMW E36 Euro M3 6-speed Manual Transmission Gearbox Getrag 420g 46k at the best online prices at.

1. Metric Mechanic has been rebuilding BMW manual transmissions since the early 80s. Aside from replacing consumables such as synchronizers, bearings and spring.
2. The 420G is a 6-speed manual transmission manufactured by Getrag. It is designed for longitudinal engine applications and is designed for use on engines producing up to 499 N⋅m (368 lb⋅ft) of torque.

The initial production run is just 10 kits. Once these are sold out, we will have more in stock in another 30 days.

Final product photos are in the works now and will be on the site soon.

Compatible Transmissions

The ZF 6-speed transmission used for the kit is the GS6-37BZ, found in the following vehicles:

-E46 chassis, 2003.5-2006 330i and 330Ci 6-speed cars. (Note the these cars were also available with the ZF 5-speed transmission, as well as an SMG 6-speed. Neither of those are compatible with this 6-speed kit)

-E60/E61 chassis, 2002-2005 BMW 530i 6-speed cars

Why this transmission?

It's a compact 6-speed gearbox with comparable gearing to the Miata 6-speed, but MUCH stronger. These transmissions have been known to handle 800+whp in BMW applications. Bus simulator for mac os x. They fit inside a Miata without any transmission tunnel modifications, and they are also readily available used for reasonable prices. Check out our gear ratio calculator to configure the best transmission and differential combo for your setup.

Please note: The Getrag 420G transmission found in the E46 M3 is not compatible with this kit. The rear of this transmission is not able to be easily mounted in the Miata tunnel and so our mounts and flywheel are design specifically for the ZF 6-speed.

This transmission also allows us to use the inexpensive OEM replacement E46 6-speed clutch kit that pairs with our custom flywheel. The pressure plate on this clutch is also found on the E46 M3 and E39 M5, so it’s up to the task to handle turbo 4 cylinder torque in many applications. Note that the ZF 6-speed uses a 22 spline clutch disc, unlike the ZF 5-speed that uses a 10 spine disc. So a clutch disc specific to this transmission is a requirement.

Parts Packages and Pricing

Our transmission kit provides everything needed for a bolt-in transmission upgrade. The shifter action is quite good: crisp and precise, and mimics the Miata shifter geometry perfectly. There is a minor increase in NVH when installing this kit thanks to the firm transmission mount, but nothing overwhelming. The upgraded components will be welcome for our high horsepower customers.

Unlike our ZF 5-speed kit that includes a transmission mount that bolts inside the tunnel, the ZF 6-speed kit includes a set of V8R frame rails, a rear crossmember, and a rear transmission bracket that accepts a poly GM style rear transmission mount (very similar to the T56 style mounts on the market).

BP or K to ZF 6-Speed Transmission Package: $2995.00

This package includes the following parts:

-Engine/transmission adapter plate, for either Mazda BP or K series engine CNC machined steel, zinc plated, with all hardware and dowel pins.

-A specific BP or K (+$100) to E46 6-speed flywheel (different geometry than the 5-speed). This flywheel (12 lb.) bolts directly to the BP or K crank and accepts a 240mm E46 clutch kit, 22 spline.

-Short shifter, stainless steel, with Miata geometry on top (Miata 10x1.25 thread pitch, height, shape, and throw are identical). The shifter has ZF 6-speed specific BMW geometry on the bottom. Ball bearings replace the OEM BMW plastic components for improved shifter action.

-Custom length selector rod, stainless steel, dual sheer design. Our design eliminates all components that often result in a sloppy BMW shifter.

-Custom selector joint (no more worn plastic bushings) and stainless steel shifter pins, with retainer clips.

-6-speed shifter plate, billet aluminum, that bolts to the top of the Miata transmission tunnel and replaces the rubber Miata outer boot. It accepts the BMW shifter ball bushing and our custom short shifter in the center.

-Steel 500+hp rated driveshaft. Can be configured to bolt to a GM Getrag diff or a solid-mounted Miata Torsen diff.

-V8R frame rails with transmission crossmember pads, powdercoated black

-ZF 6-speed transmission crossmember

-ZF 6-speed rear transmission mount bracket

-Energy Suspension GM style poly transmission mount

-¾” Wilwood clutch master cylinder kit with braided stainless clutch line

-E36 clutch slave cylinder

-BMW reverse light connector with pigtails

-Installation instructions

-Optional Delrin or Stainless Steel shift knob with KMiata logo and BMW 6-speed shift pattern. Standard M10x1.25 Miata thread pitch.

K to ZF 5 Speed Package: $3095.00

Existing customers with K series swaps can use this package to upgrade to the BMW transmission setup. This kit includes all of the same components as the BP kit listed above, but with a K series to ZF-6 flywheel and our K to E36/E46 adapter plate.

Unlike the K to ZF 5-speed setup, a custom release bearing is not needed.

KMiata Conversion Kit with ZF 6-Speed Transmission Components: $5795.00

Note that this is not our popular K24 Ultimate swap package, but our original K series swap kit (no header, intake manifold, etc). This kit is a platform for customers to build their own custom setups. This is the ideal starting point for high horsepower boosted applications. Pair this kit with big intake manifolds, custom turbo setups, and turn up the boost. For best results, add a Getrag differential swap too. All details can be found here.

Speedometer Wiring

We initially set up our test car with a GPS-based speedometer adapter, but were disappointed with the slow refresh rate on track. We are now using a Dakota Digital universal speedometer interface kit ($80 from Summit Racing, part #SGI-5E) paired with a single ABS wheel speed sensor on one hub. This works well for NB cars with the electric speedometer, and we are putting together a solution for NA cars now to accommodate the older cable-driven speedometers. More details coming soon.

Shift Knobs

We designed our shifters to accept any Miata shift knob (M10x1.25 thread pitch). However, since the reverse gear location is different on the BMW transmission, custom shift knobs were in order.

KMiata shift knobs come in black Delrin or stainless steel, with options for the BMW 5 and 6 speed shift patterns as well as Miata 5 and 6 speed shift patterns for the rest of the Miata community.

Fluid

BMW calls for automatic transmission fluid (ATF) for the GS6-37BZ transmission, as well as most other BMW manual transmissions. Redline D4 ATF is very common among BMW racers, and we’ve been pleased with it in our test car.

Miata Differential Mount for Easy PPF Delete!

If you're choosing to retain the Miata diff with this transmission upgrade, we're very close to releasing our Miata differential mount that makes deleting the power plant frame (PPF) very easy. Details and pictures are coming soon!

Questions? Email us at sales@kmiata.com. Ready to order? Click here to reserve your package today.

Details

PLEASE NOTE: Some images are representative. If concerned about the appearance of an item - please request an image of the item to be shipped.
Special Orders are welcome:- contact us with your wish list for availability & Shipping info.
On most items returns are possible, except electrically powered items due to possible shorts causing units to fail.
A re-stocking fee may also apply so please ask if you are unsure or confirm fitment with your local shop, mechanic or dealer using your VIN number.

Donner Vehicle VIN: BV95243

THIS KIT INCLUDES ALL PARTS NECESSARY TO CONVERT AN AUTOMATIC TO A MANUAL SHIFTING CAR.

TRANSMISSION

ECU / EWS/ IGNITION CYLINDER & KEY Good media player for mac.

PEDALS

CLUTCH COMPONENTS

SHIFTING LINKAGE

SLAVE CYLINDER

MASTER CYLINDER (IF REQUIRED)

DRIVE SHAFT

SENSORS

FLYWHEEL

ETC (SEE IMAGES)

THE DIFFERENTIAL IS NOT INCLUDED IN THE KIT BUT CAN BE ADDED.

6 speed gearbox
C BMW Auto to Manual Swap kit Getrag 23007508410 6 speed gearbox S6S 420G M60 M62 V8 540i 740i 840i e53 X5 GC98312
23007508410
6 speed gearbox
S6S 420G
From :06/26/2000 To: -
Weight: 46.000 kg
dealer rebuild
After Market / Rebuilt Price : $4468.06 plus core
Supersedes :
23001434488 (09/01/1997 - 11/05/2012), Exchangeable retrospectively
23001434245 (09/01/1996 - 10/06/1997), Exchangeable retrospect.
in connect. w23001222694 (02/01/1996 - 12/13/1996)
Part: 23007508410 was found on the following vehicles:
5' E39 (04/1995 - 12/2003)
Part: 23007508410 was found on the following E39 vehicles:
5' E39, 540i, Sedan, M62, MANUAL, EUR, (DE51) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, MANUAL, EUR, (DE52) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, MANUAL, USA, (DE53) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, AUTO, EUR, (DE61) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, AUTO, EUR, (DE62) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, AUTO, USA, (DE63) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, MANUAL, EUR, (DN51) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, MANUAL, EUR, (DN52) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, MANUAL, USA, (DN53) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, AUTO, EUR, (DN61) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, AUTO, EUR, (DN62) : Manual Transmission S6S 420G
5' E39, 540i, Sedan, M62, AUTO, USA, (DN63) : Manual Transmission S6S 420G
5' E39, 540i, Touring, M62, MANUAL, EUR, (DJ51) : Manual Transmission S6S 420G
5' E39, 540i, Touring, M62, MANUAL, EUR, (DJ52) : Manual Transmission S6S 420G
5' E39, 540i, Touring, M62, AUTO, EUR, (DJ61) : Manual Transmission S6S 420G
5' E39, 540i, Touring, M62, AUTO, EUR, (DJ62) : Manual Transmission S6S 420G
5' E39, 540i, Touring, M62, MANUAL, EUR, (DR51) : Manual Transmission S6S 420G
5' E39, 540i, Touring, M62, MANUAL, EUR, (DR52) : Manual Transmission S6S 420G
5' E39, 540i, Touring, M62, AUTO, EUR, (DR61) : Manual Transmission S6S 420G
5' E39, 540i, Touring, M62, AUTO, EUR, (DR62) : Manual Transmission S6S 420G
7' E38 (12/1994 - 07/2001)
8' E31 (12/1994 - 05/1999)
Drive shaft assy 6 gear transmission L=1609MM 1 26101229285 $831.90
Twin Mass Flywheel 1 06/1996 21201223581 $1858.08
Clutch pedal 1 35311161586 $34.60
01 6 speed gearbox S6S 420G - TBAG 1 09/1996 23007508410 $4468.06
Brake master cylinder 1 09/1997 34311165543 $481.15
01 Shift lever 1 25117527250 $66.20
02 Shifting arm 1 25111222726 $19.87
03 Bearing, shift lever 1 25111220600 $10.33
04 Selector rod A=273MM 1 25111222717 $23.08
05 Plastic washer 10X16X0,9 4 25111220439 $0.25
06 Securing clip 2 25117571899 $0.66
without 2 plastic washers 1 220 439
07 Gearshift rod joint 1 25117580281 $15.10
08 Lock Ring 1 25111222451 $0.33
09 Plastic washer 1 25111434194 $0.85
10 Dowel pin 1 23411466134 $0.70
11 Rubber boot 1 25111434181 $22.38
12 Bolt D=10MMX70MM 1 25111222375 $11.32
13 Bush bearing oval L=26MM/SCHWARZ 2 25117507695 $2.93
14 Bearing, shifting arm 1 25111222652 $26.50
15 Insert shifter covering 1 25111222754
08 Pulse generator, crankshaft 1 13627839138 $116.05
02 Clutch plate D=240MM 1 06/1996 21217526590 $224.27
03 Clutch release bearing 1 06/1996 21517521360 $75.34
03 Clutch release bearing 1 21511223582 $75.34
Important!
See torque figures!
04 Fillister-head screw M8X16-ZNS3 MK 6 07119906045 $0.56
05 Clutch rel.fork lever 1 06/1996 21511204229 $14.08
SI 210186503
06 Ball pin H=20MM 1 09/1996 21511223328 $1.17
07 Spring clip 1 21517570284 $4.50
Slave cylinder n/a
Includes all parts needed to change a M60 m62 equipped BMW from automatic to manual transmission.
Optional differential is also available - inquire.

NOTE:

All the information is in the ad. The Donner car, the parts and specs.

Please show the ad to the mechanic who is going to do the job. They will look at the kit and know if your engine ecu would have to be changed, they will know if you need a custom drive shaft or if you can just swap the top of this one with what you have.

I do not have your car in front of me and I am only supplying the kit. I cannot take responsibility for the installation. That is your mechanics job.

The mechanic doing the job will take your car, this kit and your specifications and give you a labour price and bill of materials to deliver the car you want. I cannot do that.The mechanic is taking responsibility for the job. His license and reputation is on the line.

I supply parts - the installer makes it work. There are 1,000's of decisions to be made. No two installs are the same because no two cars are the same and the goals of projects are always different.

The question is - what car do you want to end up with and what are you going to do with it-

This has to be discussed with the installer.

Words like ' I want it cheap' and ' I want it done right' - make a huge difference in time, materials, engineering and price.

Getrag 420g

'I want it to be safe' and 'I want it fast' - also make a huge difference

This is not a simple job on any car - please thoroughly research it. Decide how you want it done. Get a bill of materials and go from there.

(=> For more information on this or any other part; please, e-mail us: info@bmwallparts.com
Remember, Part numbers, your VIN number and pictures always help us find the exact right part.)

Additional Information

Getrag 420g Weight