Which cars does the Super Lock LSD for Porsche 996 Turbo fit?

OS Giken Japan lists the Super Lock LSD for Porsche 996 Turbo models for the 996 Turbo and 997 Turbo with the six-speed manual. Turn 14 lists the US 2001 to 2005 and 2007 to 2013 Turbo. Confirm your gearbox before ordering.

OS Giken Japan lists the 996 and 997 GT2 under a different unit shared with the GT3, while Turn 14 lists GT2 fitment for this part. Because the sources disagree, contact our team before ordering for a GT2 so we can confirm with OS Giken.

Will it make the car harder to drive on the road?

No. OS Giken designed the Porsche Super Lock to suit both circuit and street use, moving smoothly from open to full lock, with pressure ring springs set to reduce drag at low speed. Expect some noise in tight parking maneuvers.

Can OS Giken tune it for my car?

Yes. OS Giken retunes Super Lock units in-house. Cone springs set initial torque, pressure ring springs set how quickly full lock arrives, and the pressure ring and iron cross set the ramp angles, so the unit can be matched to weight, power and use.

Does it fit Tiptronic or PTV Plus cars?

No. OS Giken Japan states that Tiptronic cars are not compatible, that cars with a factory LSD other than PDK cars are not compatible, and that cars with Porsche Torque Vectoring Plus cannot be fitted. Check the options on your car before ordering.

What oil should be used?

Use a gear oil suited to clutch-type limited-slip differentials, and change it more often than with an open differential, especially after track use. OS Giken lists a transaxle oil capacity of 3.7 liters for 911 applications. Fresh oil keeps the friction plates working consistently between rebuilds.

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Description

OS Giken Super Lock LSD for Porsche 996 Turbo and 997 Turbo 6MT

OS Giken’s Super Lock LSD for Porsche 996 Turbo and 997 Turbo models is a plate-type limited-slip differential for the rear axle of the all-wheel-drive 911 Turbo with the six-speed manual gearbox. OS Giken Japan lists it for the 996 Turbo and the 997 Turbo six-speed manual, and Turn 14 records it as the C-Type unit. Even with drive to the front axle, a tuned 911 Turbo sends most of its torque to the rear, and the way the rear differential locks shapes how the car exits a corner. The Super Lock builds lock smoothly and progressively, putting power down evenly and keeping the rear settled on and off throttle.

Turbo Versus GT2

Turn 14 also lists the rear-drive 996 and 997 GT2 for this part, but OS Giken Japan places the GT2 with the GT3 under a different unit. Confirm with our team before ordering for a GT2 so the right differential is supplied.

Features

Patented OS Giken pressure ring for smooth, progressive lock
Moves smoothly from open to full lock without extra slip on throttle
Pressure ring springs tuned against low-speed drag
Large-capacity friction plates and OS Giken side gear shape
Chemically heat-treated, high-grade steel alloy components
Built for the 996 and 997 Turbo six-speed manual

Applications

Porsche 911 Turbo (996): Six-speed manual, 2001-2005
Porsche 911 Turbo (997): Six-speed manual, 2007-2013

Notes

This Super Lock LSD for Porsche 996 Turbo and 997 Turbo models is for six-speed manual cars
Tuned cars making far more than factory power should discuss setup with our team before ordering
OS Giken Japan lists Tiptronic cars, PTV Plus cars and cars with a factory LSD (other than PDK) as not compatible
Installation labor is not included

Frequently Asked Questions

Which cars does the Super Lock LSD for Porsche 996 Turbo fit? OS Giken Japan lists the Super Lock LSD for Porsche 996 Turbo models for the 996 Turbo and 997 Turbo with the six-speed manual. Turn 14 lists the US 2001 to 2005 and 2007 to 2013 Turbo. Confirm your gearbox before ordering.
Does it fit the GT2? OS Giken Japan lists the 996 and 997 GT2 under a different unit shared with the GT3, while Turn 14 lists GT2 fitment for this part. Because the sources disagree, contact our team before ordering for a GT2 so we can confirm with OS Giken.
Will it make the car harder to drive on the road? No. OS Giken designed the Porsche Super Lock to suit both circuit and street use, moving smoothly from open to full lock, with pressure ring springs set to reduce drag at low speed. Expect some noise in tight parking maneuvers.
Can OS Giken tune it for my car? Yes. OS Giken retunes Super Lock units in-house. Cone springs set initial torque, pressure ring springs set how quickly full lock arrives, and the pressure ring and iron cross set the ramp angles, so the unit can be matched to weight, power and use.
Does it fit Tiptronic or PTV Plus cars? No. OS Giken Japan states that Tiptronic cars are not compatible, that cars with a factory LSD other than PDK cars are not compatible, and that cars with Porsche Torque Vectoring Plus cannot be fitted. Check the options on your car before ordering.
What oil should be used? Use a gear oil suited to clutch-type limited-slip differentials, and change it more often than with an open differential, especially after track use. OS Giken lists a transaxle oil capacity of 3.7 liters for 911 applications. Fresh oil keeps the friction plates working consistently between rebuilds.

About OS Giken

OS Giken was founded in Okayama, Japan in 1973 by Masaharu Okazaki. It built the TC16 and TC24-B1 DOHC cylinder heads for Nissan L-series engines, began making multi-plate racing clutches in 1982 and started supplying OEM limited-slip differentials in 1983. Development of the Super Lock LSD began in 1997, and of the OS-88 sequential gearbox for the Skyline GT-R in 1998.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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OS Giken Super Lock LSD for Porsche 996 Turbo and 997 Turbo 6MT [PR122-HA]

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OS Giken Super Lock LSD for Porsche 996 Turbo and 997 Turbo 6MT

Turbo Versus GT2

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Frequently Asked Questions

About OS Giken

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