DuoSelect Maserati Quattroporte Manual Conversion Kit

Transform your 2005-07 M139 DuoSelect Maserati Quattroporte V with our manual transmission conversion kit. Designed for enthusiasts, our kits provide a seamless shift experience, enhancing performance and driving pleasure. Each kit is meticulously crafted to ensure compatibility and durability, allowing you to enjoy the thrill of manual driving.  Additional advantages include simplified shift system and the ability to control clutch slippage.  Upgrade your vehicle today and experience the difference in handling and control. Perfect for those who appreciate the art of driving.

The installation requires removal of the hydraulic actuator assembly from the transmission, and installing a custom machined actuator housing and linkages.  The shifter is installed inside the center console, and a clutch pedal added to the brake pedal box into the factory dedicated spot.  The engine controller is re-flashed for manual operation.  The clutch bellhousing needs to be removed to change the clutch slave cylinder seals to be brake fluid compatible and the clutch line installed.

Although the kit installation is reversible, these cars do not have factory provisions for all of the manual parts. Holes need to to be drilled in the firewall for clutch master cylinder installation and a hole in the driveshaft tunnel for the shifter cables.  Drill jigs are provided for both with the kit, ensuring the holes are drilled in the correct locations.  The two large holes for the clutch master cylinder and the cables can be drilled with a 1-1/2" (38mm) hole saw.

The shifter, shift actuator and linkage mounts all uses existing holes in the car. The factory center console can be used without external modifications.  The internal center console plastic structure does require cutting to provide space for the shifter.  The rear AC vents in the center console and the right B-pillar need to be disabled, but the left side B-pillar vent and the rear floor vents remain functional with a duct provided with the kit.  A block off plate for the right side rear AC vents increases air flow to other vents.  Front AC system is not affected by the kit.

Standard kits include a plastic shift gate, available in multiple colors. Optional stainless steel gates are offered in polished or rough finish. The rough finish stainless steel can be customer-polished. All gates are interchangeable and can be upgraded later in minutes.

The reverse lights can be wired using the original direction selector switch wiring running to the transmission controller in the trunk.  This way, running new wires from the shifter to the trunk is not necessary.  A jumper harness is provided for the shifter end, although some cutting and soldering needs to be done to the TCU wiring in the trunk.  Detailed instructions on the five wires needing changes are provided with the instructions.

The kit is DIY installable.  Removal and installation of the transmission and the torque tube are the heaviest parts that need to be handled, but these can be tackled by a competent DIY installer working with jack stands.

The kit includes an installation manual and parts catalog with exploded views, descriptions, quantities, and part numbers.  With decades of engineering experience, we realize the importance of having these details.  The custom made components of the kit have been designed with bushings and bearings as wear items. These wear items are off the shelf and can be sourced from multiple industrial part suppliers.  The part descriptions generally describe these parts well enough that their sizes can be easily determined without guessing or measuring.  The clutch master cylinder is an off the shelf part, as well as the switch used for reverse lights.

The shift cables use standard configurations with threaded rod ends (as opposed to difficult to source custom molded ends used on similar kits for other car brands), and could be duplicated by most cable suppliers.  The rod ends, or heim joints, used with the cables are standard parts also available from industrial supply houses or major aftermarket auto parts houses.

Although wear parts can be sourced from other suppliers, we can supply them.  We are a new company, but plan to be available well into the future to help support these kits.  

Since the clutch bellhousing needs to be removed to install brake fluid compatible seals, it is a convenient time to change the coolant hose at the back of the engine.  A silicone hose, clamps and crush washers for the tube connecting to this hose can be provided upon request.

The kit includes a 1 year, unlimited mileage warranty.  This warranty covers the parts supplied.  Any labor, such that may be required to adjust, troubleshoot, or replace the parts is not included.

The attached video shows the converted car being driven while describing the parts of the conversion and a lot of the installation process.

The kit has some variables, mainly regarding the ECU programming and shift gate options.  Contact us if you are interested in purchasing a kit to discuss specifics.  The discounted introductory prices shown are for the mechanical parts, with software changes extra.  Majority of the parts are in stock, and typical shipping time is about 1 to 2 weeks.

Note: Payment by ACH transfer or wire is preferred for conversion kits.  PayPal is accepted by request; a 3% processing fee will be added to cover PayPal transaction costs.