BMW Z4 Manual Transmission for Sale | Premium Getrag 420G 6-speed manual transmission

BMW Z4 Manual Transmission for Sale | Premium Getrag 420G 6-speed manual transmission

Code: vaz238
  • In Stock, BMW Z4 Manual Transmission Available
  • Free Shipping to All 50 States via Freight Pallet, 5 to 10 Business Days
  • Getrag 420G Identified (M-spec 6-speed for Z4 M / E46 M3 / E39 M5)
  • All 6 Forward Gears Verified Shifting Smoothly
  • Reverse Operation Confirmed
  • Synchros Tested
  • Input Shaft Bearing Function Verified
  • Case Integrity Inspected
  • Donor Vehicle Confirmed Where Available
  • 100% Inspection Before Every Order Ships
  • No Core Charge, Keep Your Old Transmission
  • 15 Day Replacement Warranty on Internal Defects
$1,850.00 In Stock

About the BMW Z4 Manual Transmission

For driving enthusiasts who crave the thrill of the open road, the used BMW Z4 manual transmission offers an unparalleled experience. This transmission, renowned for its smooth shifting and precise control, is designed to enhance the performance of your BMW Z4. By opting for the Z4 manual transmission, you can enjoy the raw connection and exhilarating driving sensation that only a manual gearbox can provide. If you're looking to upgrade your vehicle or replace an existing transmission, our used BMW Z4 manual transmission for sale here is the perfect choice. Elevate your driving experience and enjoy the perfect blend of control, performance, and driving pleasure.

This Listing: The Getrag 420G 6-Speed Manual (M-Spec)

The specific transmission featured in this listing is the Getrag 420G , a heavy-duty 6-speed manual originally developed for high-performance BMW M car applications. In the BMW Z4 product line, the 420G is the M-spec transmission used exclusively in the Z4 M Roadster (E85) and Z4 M Coupe (E86) from 2006 to 2008, paired with the legendary S54 inline-6 engine. The 420G was also shared with two of BMW's most celebrated M cars of the era , the E46 M3 (2001 to 2006) and the E39 M5 (1999 to 2003).

This is a robust and reliable gearbox that enhances the driving experience. This manual transmission is known for its smooth shifting and precise gear engagement, allowing drivers to fully enjoy the Z4 M's sporty performance. The BMW Z4 manual transmission for sale here is well-matched to the Z4 M's powerful S54 inline-6 engine, efficiently transferring power to the rear wheels through the M-spec rear differential. It offers a balance of durability and performance, making it suitable for both daily driving and more spirited outings.

BMW Z4 Manual Transmission Reference Guide: All Z4 Manual Options

For broader Z4 manual transmission shopping, here is a complete reference of the manual transmissions used across all BMW Z4 generations and variants:

Z4 Generation / VariantYearsEngineManual Transmission
E85 Z4 2.5i2003-2005M54B25 inline-6ZF S5-31 5-speed manual
E85 Z4 3.0i2003-2005M54B30 inline-6ZF S5-31 5-speed manual
E85 Z4 2.5si2006-2008N52B25 inline-6ZF GS6-17BG 6-speed manual
E85 Z4 3.0si2006-2008N52B30 inline-6ZF GS6-17BG 6-speed manual
E85 Z4 M Roadster (THIS LISTING)2006-2008S54B32 inline-6 (330 HP)Getrag 420G 6-speed manual
E86 Z4 Coupe 3.0si2006-2008N52B30 inline-6ZF GS6-17BG 6-speed manual
E86 Z4 M Coupe (THIS LISTING)2006-2008S54B32 inline-6 (330 HP)Getrag 420G 6-speed manual
E89 Z4 sDrive23i / 28i / 30i2009-2016N52 / N20 inline-4 / 6ZF GS6-17BG 6-speed manual
E89 Z4 sDrive35i / 35is2009-2016N54 twin-turbo inline-6ZF GS6-45BZ (some), DCT primary
G29 Z4 sDrive30i / M40i2019-presentB48 / B58 (most markets auto only)ZF GS6-17DG 6-speed (some markets)

The Getrag 420G in this listing is the M-spec transmission specifically and is not directly interchangeable with the standard Z4 ZF units without significant modifications.

Why the Getrag 420G Matters: A Legendary M Car Transmission

The Getrag 420G is considered one of the finest manual transmissions ever produced for a road car. Key reasons:

  • Heavy-Duty Construction: Designed to handle the high-torque output of BMW's S54 inline-6 and S62 V8 M engines (350+ HP applications)
  • Cast Aluminum Case: Lighter than steel cases while maintaining rigidity
  • Steel Internals: Heavy-duty gears, shafts, and synchros for sustained performance driving
  • Precise Shift Action: The 420G is known for its short, direct, mechanical shift feel , one of the defining characteristics of E46 M3 and E39 M5 ownership
  • Track-Ready: Used in countless track day cars, club racers, and time attack vehicles without issues
  • Parts Availability: BMW M car parts network supports the 420G with synchros, bearings, shafts, and case components
  • Shared Family: The 420G family also includes the closely-related 421G and other variants used in BMW M cars and select Maserati / Aston Martin applications

BMW Z4 M Background

A bit of context on the cars this transmission powered. The BMW Z4 M Roadster (E85) and Z4 M Coupe (E86) were produced from 2006 to 2008 as the high-performance variants of the standard Z4 platform. Both share:

  • Engine: S54B32 inline-6 (3.2L) producing 330 HP and 262 lb-ft of torque, 7,900 RPM redline (some sources cite 343 HP for European spec)
  • Transmission: Getrag 420G 6-speed manual (this listing) , no automatic option offered
  • Drivetrain: Rear-wheel drive with M-spec rear differential (3.62:1 final drive)
  • Performance: 0 to 60 MPH in approximately 4.7 seconds
  • Top speed: 155 MPH (electronically limited)

The Z4 M Coupe in particular is now a sought-after modern classic, with values appreciating significantly due to limited production numbers and the desirable combination of the S54 engine and Getrag 420G manual.

Key Engineering Features of the Getrag 420G

  • 6-Speed Layout

Five forward speeds for performance driving plus a 6th overdrive gear for highway cruising. Each ratio carefully chosen for the S54's 7,900 RPM redline.

  • Cast Aluminum Case with Steel Bell Housing

Lightweight where possible, strong where needed. The bell housing is steel for clutch operation reliability.

  • Heavy-Duty Synchros

Designed for sustained high-RPM shifting characteristic of M car performance driving.

  • Single-Mass Flywheel Compatibility

Originally paired with a single-mass flywheel for the M car application, providing direct, mechanical clutch feel.

  • Mechanical Linkage Shifter

Direct mechanical linkage from the shift lever to the transmission for precise, communicative shift feel that defines the M car driving experience.

  • Maximum Torque Capacity

Rated for approximately 410 lb-ft of torque, sufficient for the S54's 262 lb-ft with significant safety margin.

Why Choose a Used Getrag 420G?

Opting for a used Getrag 420G offers compelling value for Z4 M / E46 M3 / E39 M5 owners:

  • Cost savings vs reman ($999 used vs $2,500-$4,500 reman plus core)
  • Direct OEM fit for Z4 M Roadster, Z4 M Coupe, E46 M3, E39 M5
  • M car heritage , the same transmission as BMW's most celebrated M cars
  • Long remaining life with proper maintenance and quality MTF-LT-2 fluid

Here at Vaz Auto Solutions, you'll find this BMW Z4 manual transmission for sale at the most reasonable price possible, with the Getrag 420G correctly identified for Z4 M / E46 M3 / E39 M5 applications and clear differentiation from the standard Z4 ZF transmissions.

Vehicle Compatibility

Direct Fit (M-Spec Getrag 420G):

VehicleCompatibility
BMW Z4 M Roadster (E85)2006 to 2008 with S54B32 inline-6 engine
BMW Z4 M Coupe (E86)2006 to 2008 with S54B32 inline-6 engine
BMW M3 (E46)2001 to 2006 with S54B32 inline-6 engine (same transmission shared)
BMW M5 (E39)1999 to 2003 with S62B50 V8 engine (same transmission shared)

NOT Compatible (Different Transmissions for Standard Z4 Variants):

VehicleCompatibility
Standard Z4 with M54 engine (E85 2.5i / 3.0i 2003-2005)Uses ZF S5-31 5-speed, NOT Getrag 420G
Standard Z4 with N52 engine (E85 / E86 2006-2008)Uses ZF GS6-17BG 6-speed, NOT Getrag 420G
E89 Z4 (2009-2016)Uses ZF GS6-17BG or ZF GS6-45BZ, NOT Getrag 420G
G29 Z4 (2019 plus)Uses ZF GS6-17DG (in markets offering manual), NOT Getrag 420G

Condition and Inspection

  • Getrag 420G identification verified (M-spec 6-speed)
  • Donor vehicle confirmed (Z4 M Roadster, Z4 M Coupe, E46 M3, or E39 M5)
  • All 6 forward gears verified shifting smoothly
  • Reverse operation confirmed
  • Synchros tested (especially 2nd and 3rd, common wear points)
  • Input shaft bearing function verified
  • Output shaft bearing function verified
  • Case integrity inspected for cracks or leaks
  • Bell housing condition assessed
  • Shift fork condition documented
  • Mileage documented where available
  • BMW MTF-LT-2 fluid samples analyzed where possible
  • Getrag 420G correctly identified as M-spec transmission
  • Z4 M vs standard Z4 distinction clearly stated
  • M car expertise (E46 M3 / E39 M5 / Z4 M family)
  • All 6 forward gears verified shifting
  • Synchro condition documented
  • Case integrity verified
  • Free freight pallet delivery to all 50 states
  • 15 day replacement warranty on internal defects
  • BMW M specialist support team
Type Manual transmission
Model Getrag 420G
Maker Getrag (now Magna PT)
Speeds 6 forward speeds plus reverse
Configuration Rear-wheel drive | longitudinally mounted
Application Type M-spec heavy-duty for BMW M cars
Maximum Torque Approximately 410 lb-ft rated capacity
Case Material Cast aluminum
Gear Ratios Z4 M 1st: 4.227 | 2nd: 2.528 | 3rd: 1.669 | 4th: 1.226 | 5th: 1.000 | 6th: 0.828 | Reverse: 4.043
Final Drive Z4 M Diff 3.62:1 (rear differential pairing)
Fluid BMW MTF-LT-2 (Manual Transmission Fluid Long-life Type 2) | approximately 1.7 liters
Direct Fit Z4 M Roadster (E85) | Z4 M Coupe (E86) | E46 M3 | E39 M5
Not Compatible Standard Z4 variants (use different ZF transmissions)
Price $999.00
What is the Getrag 420G?
The Getrag 420G is a heavy-duty 6-speed manual transmission developed by Getrag (now Magna PT) for high-torque BMW M car applications. It's used in the BMW Z4 M Roadster (E85), Z4 M Coupe (E86), E46 M3, and E39 M5 , some of the most celebrated M cars ever produced. The 420G is known for its precise shift action, robust internals, and ability to handle sustained high-torque operation.
Will the Getrag 420G fit my standard BMW Z4?
What's the difference between the Getrag 420G and the BMW SMG?
How does the Getrag 420G compare to the BMW DCT (M3 DCT, etc.)?
Is the Getrag 420G the same as the Getrag 250 or 260?
What kind of maintenance does the Getrag 420G require?
How long does the Getrag 420G last?
What about Z4 M Roadster vs Z4 M Coupe transmission compatibility?

15 Day Replacement Warranty.

Covered:

  • Internal defects discovered at delivery (broken gears
  • Failed bearings at delivery
  • Cracked case
  • Broken shafts
  • Complete loss of a forward gear at delivery
  • Broken reverse gear)

Not Covered:

  • Synchro wear after delivery (normal high-mileage wear)
  • Shift fork wear
  • Clutch hydraulic components
  • Flywheel condition (separate component)
  • Pilot bearing wear
  • Normal high-mileage getrag 420g service items
  • Freight damage

Contact (240) 301-0095 within 15 days.

  • Getrag 420G M-Spec Verified: Heavy-duty 6-speed identification
  • Z4 M Application Confirmed: E85 Roadster / E86 Coupe identified
  • Cross-Reference Knowledge: E46 M3 and E39 M5 shared transmission expertise
  • All 6 Forward Gears Verified: Shifting confirmed smooth
  • Reverse Operation Confirmed: Quality verified
  • Synchros Tested: Wear points documented
  • Case Integrity Verified: Cracks and leaks inspected
  • BMW M Specialist Support: M car expertise
  • Free Shipping All 50 States: Freight pallet delivery
  • No Core Charge: Keep your old transmission
  • 15 Day Warranty: Internal defects covered
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(240) 301-0095