OS Giken Porsche 997 3.6/3.8L Aisin Trans (MT Only) Super Lock LSD

OS Giken Porsche 997 3.6/3.8L Aisin Trans (MT Only) Super Lock LSD

Upgrade the traction and handling performance of your compatible Porsche 997 with the OS Giken PR121-HA Super Lock LSD. Designed for Porsche 997 models equipped with 3.6L or 3.8L engines and an Aisin manual transmission, this Super Lock limited-slip differential helps distribute power more effectively between the drive wheels. It is intended for manual-transmission applications only and is engineered for drivers seeking improved corner exit performance, more consistent traction, and responsive handling under demanding conditions.
The OS Giken Super Lock LSD is designed to maintain controlled power transfer while helping reduce unwanted inside-wheel spin. Its precise locking characteristics support improved acceleration when exiting corners and provide more predictable behavior during spirited street driving, track use, or competition applications. The PR121-HA is built as a specialized drivetrain upgrade for Porsche enthusiasts who require dependable differential performance beyond the capabilities of a standard open differential.
This OS Giken LSD is listed for select Porsche 911 applications from the 2009 through 2013 model years, including compatible 997-generation configurations. Confirm the vehicle year, engine, transmission type, and differential application before ordering to ensure proper fitment. Professional installation is recommended, along with following OS Giken setup, break-in, lubrication, and maintenance procedures for reliable long-term operation. Part number PR121-HA identifies this specific OS Giken Super Lock LSD configuration.

Features:

• Brand: OS Giken

• Part Number: PR121-HA

• Application: Porsche 997 models with 3.6L or 3.8L engines

• Transmission: Aisin manual transmission applications only

• Differential Type: Super Lock limited-slip differential

• Performance Benefit: Helps improve traction and reduce inside-wheel spin during acceleration

• Vehicle Fitment: Select Porsche 911 applications from 2009 through 2013

• Installation: Professional installation and adherence to OS Giken service procedures recommended

Fitment:
Porsche 911 Carrera 2006
Porsche 911 Carrera 2007
Porsche 911 Carrera 2008
Porsche 911 Carrera 2009
Porsche 911 Carrera 2010
Porsche 911 Carrera 2011
Porsche 911 Carrera 2012
Porsche 911 Carrera 4 2006
Porsche 911 Carrera 4 2007
Porsche 911 Carrera 4 2008
Porsche 911 Carrera 4 2009
Porsche 911 Carrera 4 2010
Porsche 911 Carrera 4 2011
Porsche 911 Carrera 4 2012
Porsche 911 Carrera 4 GTS 2012
Porsche 911 Carrera 4S 2006
Porsche 911 Carrera 4S 2007
Porsche 911 Carrera 4S 2008
Porsche 911 Carrera 4S 2009
Porsche 911 Carrera 4S 2010
Porsche 911 Carrera 4S 2011
Porsche 911 Carrera 4S 2012
Porsche 911 Carrera 4S 2013
Porsche 911 Carrera GTS 2011
Porsche 911 Carrera GTS 2012
Porsche 911 Carrera S 2006
Porsche 911 Carrera S 2007
Porsche 911 Carrera S 2008
Porsche 911 Carrera S 2009
Porsche 911 Carrera S 2010
Porsche 911 Carrera S 2011
Porsche 911 Carrera S 2012
Porsche 911 Carrera S 2013
Porsche 911 GT2 2008
Porsche 911 GT2 2009
Porsche 911 GT2 RS 2011
Porsche 911 GT3 2007
Porsche 911 GT3 2008
Porsche 911 GT3 2010
Porsche 911 GT3 2011
Porsche 911 GT3 RS 2007
Porsche 911 GT3 RS 2008
Porsche 911 GT3 RS 2011
Porsche 911 Speedster 2011
Porsche 911 Targa 4 2007
Porsche 911 Targa 4 2008
Porsche 911 Targa 4 2009
Porsche 911 Targa 4 2010
Porsche 911 Targa 4 2011
Porsche 911 Targa 4 2012
Porsche 911 Targa 4S 2007
Porsche 911 Targa 4S 2008
Porsche 911 Targa 4S 2009
Porsche 911 Targa 4S 2010
Porsche 911 Targa 4S 2011
Porsche 911 Targa 4S 2012
Porsche 911 Turbo 2007
Porsche 911 Turbo 2008
Porsche 911 Turbo 2009
Porsche 911 Turbo 2010
Porsche 911 Turbo 2011
Porsche 911 Turbo 2012
Porsche 911 Turbo 2013
Porsche 911 Turbo S 2011
Porsche 911 Turbo S 2012
Porsche 911 Turbo S 2013