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1991 Porsche 911
4 Technical Service Bulletins (TSBs)
TSB List for the 1991 Porsche 911
Technical Service Bulletins (TSBs) for the 1991 911 are official communications between Porsche & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS
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TSB #GRP4/9310
BRAKE VIBRATION DAMPER APPLICATION - NEW DAMPING PLATE WITH STEEL CLIP. *TW Read More »
POWER TRAIN:MANUAL TRANSMISSION
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TSB #GRP3/9503
THE FRONT TRANSMISSION CASE COVER AND SPUR GEARS ARE NO LONGER AVAILABLE AS SEPARATE PARTS. *TW Read More »
UNKNOWN OR OTHER
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TSB #PK-D8-16
PORSCHE: INFORMATION ON HOW TO READ THE VIN. *RM Read More »
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TSB #0203
EXCHANGE ENGINES AND TRANSMISSIONS FOR WARRANTY. THIS BULLETIN REPLACES BULLETIN WTY0203 DATED 2-15-02. *TT Read More »
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