Which cars does the TCD LSD for PDK Cayman with a factory LSD fit?

OS Giken Japan lists the TCD LSD for PDK Cayman and Boxster models with a factory limited-slip differential: the seven-speed PDK 981 Boxster and Cayman and the 718 Boxster and Cayman. Check the option codes on your car before ordering, and contact our team if unsure.

What makes a TCD different from a Super Lock LSD?

TCD uses the Super Lock mechanism, but the friction discs carry oil holes and channels that keep them wet. That lets the unit switch between open and locked smoothly and quietly, so it suits a road car while still giving the traction of a plate-type LSD.

How do I know if my car has a factory LSD?

The option codes on the car, listed on the build sheet or the sticker in the service book or front trunk, show whether a limited-slip differential or torque vectoring was fitted. Our team can help read them if you send the VIN.

Does it fit a car with PTV Plus?

No. OS Giken Japan states that cars with Porsche Torque Vectoring Plus cannot be fitted with its differentials. PTV Plus uses an electronically controlled rear differential that this unit does not replace, so check the option codes first. Our team can help.

Can the cam angle be changed?

Yes. OS Giken can set the cam angle of a TCD unit, which changes how strongly it locks under power and on deceleration. Tell our team how the car is used and we can pass the request to OS Giken when 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. Fresh oil keeps the friction plates working consistently, reduces chatter during slow turns and helps the unit last longer between rebuilds.

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Description

OS Giken TCD LSD for PDK Cayman and Boxster with Factory LSD, 981 and 718

OS Giken’s TCD LSD for PDK Cayman and Boxster models with a factory LSD is the Type-N unit OS Giken Japan lists for seven-speed PDK cars that left the factory with a limited-slip differential: the 981 Boxster and Cayman and the 718 Boxster and Cayman. It replaces the factory unit with OS Giken’s comfort-oriented mechanical LSD on the Super Lock mechanism, where oil holes and channels in the friction discs keep them wet so the unit locks smoothly and quietly. Owners choose it when they want a tunable, rebuildable differential with more consistent lock than the factory part on track.

Which Unit for Which PDK Car

OS Giken Japan splits the PDK cars by whether a factory LSD is fitted. This unit is for cars with one. Cars without a factory LSD take the Type-I PDK unit, which also covers the 987 PDK cars. Check the option codes on your car before ordering.

Features

TCD discs with oil holes and channels for smooth, quiet lock
Built on the OS Giken Super Lock pressure ring mechanism
Plate-type traction with mild engagement for street use
Cam angle can be set by OS Giken to suit the car
Type-N unit for PDK cars with a factory LSD

Applications

Porsche Boxster and Cayman (981): Seven-speed PDK with factory LSD
Porsche 718 Boxster and Cayman: Seven-speed PDK with factory LSD

Notes

This TCD LSD for PDK Cayman and Boxster models is for PDK cars that have a factory limited-slip differential
Cars with Porsche Torque Vectoring Plus cannot be fitted, per OS Giken Japan
Installation labor is not included

Frequently Asked Questions

Which cars does the TCD LSD for PDK Cayman with a factory LSD fit? OS Giken Japan lists the TCD LSD for PDK Cayman and Boxster models with a factory limited-slip differential: the seven-speed PDK 981 Boxster and Cayman and the 718 Boxster and Cayman. Check the option codes on your car before ordering, and contact our team if unsure.
What makes a TCD different from a Super Lock LSD? TCD uses the Super Lock mechanism, but the friction discs carry oil holes and channels that keep them wet. That lets the unit switch between open and locked smoothly and quietly, so it suits a road car while still giving the traction of a plate-type LSD.
How do I know if my car has a factory LSD? The option codes on the car, listed on the build sheet or the sticker in the service book or front trunk, show whether a limited-slip differential or torque vectoring was fitted. Our team can help read them if you send the VIN.
Does it fit a car with PTV Plus? No. OS Giken Japan states that cars with Porsche Torque Vectoring Plus cannot be fitted with its differentials. PTV Plus uses an electronically controlled rear differential that this unit does not replace, so check the option codes first. Our team can help.
Can the cam angle be changed? Yes. OS Giken can set the cam angle of a TCD unit, which changes how strongly it locks under power and on deceleration. Tell our team how the car is used and we can pass the request to OS Giken when 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. Fresh oil keeps the friction plates working consistently, reduces chatter during slow turns and helps the unit last longer 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

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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 TCD LSD for PDK Cayman and Boxster with Factory LSD, 981 and 718 [PR154-HC]

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OS Giken TCD LSD for PDK Cayman and Boxster with Factory LSD, 981 and 718

Which Unit for Which PDK Car

Features

Applications

Notes

Frequently Asked Questions

About OS Giken

Reviews