F40 6 Speed Conversion Kit
F40 6 Speed Conversion Kit
F40 6 Speed Conversion Kit

F40 6 Speed Conversion Kit

F40 6 Speed Conversion Kit

What engine do you have?
Regular price $1,599.99
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6 speed conversion for your Cobalt/HHR! It is based on GM's F40 transmission, this conversion solves all of the F35 shortcomings with higher power capability & smoother shifting! The F40 transmission has 2 internal shafts instead of one, the gears are twice the size of the F35, and it has an additional over drive gear.

This kit will require all of the parts from the list, you will not be able to reuse any of your F35 parts, i.e. flywheel, clutch disc or aftermarket shifter. Do not be fooled by competitors kits, their kit requires you to purchase a clutch separately.

More Info


  • Upgraded steel shift cables
  • 6 speed shifter assembly w/adapter bracket and shift knob/boot.
  • ZZP Billet aluminum transmission brackets (Top and Rear)
  • ZZP Intermediate "jack" shaft w/custom speed sensor tone ring (Saab trans only)
  • ZZP Billet speed sensor bracket (Saab trans only)
  • ZZP Speed sensor extension harness (Saab trans only)
  • Cast transmission bracket
  • Solid shift cable bracket (Replaces Saab dampened bracket)
  • OEM LDK flywheel, pressure plate, and clutch assembly
  • Flywheel bolts
  • Bolt pack for mounts
  • Optional: (LNF) Driveshaft Shop Level 4 CV axle shaft(s) / (LSJ) Driveshaft Shop Level 4 CV axle shaft(s)

    How to order your F40 conversion kit:

    What engine do you have? This option determines what axle is included in the kit. (LNF has a larger outer spline than the LSJ)

    Transmission: This determines if you have a transmission already, which one you have if you do, so we can include the correct trans mounts with the kit.  

    Axle(s): You will need at least one shorter (driver side) axle to use the F40 transmission.  If you already have one, then this option removes any additional axles from the kit, or if you want just the required one, this allows you to add it, or if you want a matching pair of the upgraded Driveshaft Shop axles, you can add both sides.

    We now have brand new Regal F40 transmissions available here

    Requires Saab 9-3 ('07+ preferred for best performance gearing) or 2011-13 Regal 6 speed F40 transmission and PCM reprogramming to adjust for the new speed sensor.  It does fit pre-2007 Saab F40 but the gearing is not optimal.  The Regal transmission has poor gearing for drag or road course cars (wide gears, tall final drive), but can be useful for half mile racing.  Please don't ask if it will work with XX transmission.  It's designed for a Saab or 11-13 Regal trans as stated above and nothing else.

    Designed and built around the Chevrolet Cobalt SS. Fits 2005-2010 Cobalt SS (2.0 LSJ, 2.0 LNF, 2.0 LDK/LHU), 2004-2007 Saturn Ion Redline (2.0 LSJ), and 2008-2010 Chevy HHR SS. 

    These kits are built per order and can take up to a week to be packaged and shipped.

    CLICK HERE for Digital Install Instructions

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