That exhaust leak you hear in your 911 may actually be the cylinder head leaking where the studs have pulled loose. As Porsche increased displacement of the 911 engine, the different rates of thermal expansion have caused head studs to break or pull out from engine case. These latest aftermarket steel head studs have a thermal expansion rate of approximately the same as the alloy case. Unlike original Dilivar material our studs are made in the USA and are magnetic. We recommend these studs be installed in groups of 12. Do not mix with different studs on same side of engine to insure exact expansion rates. Learn More

TIME-SERT® is a solid bushing insert. This guarantees easy installation and allows for full load use of tapped hole, ensuring protection against stress and vibration. TIME-SERT® is thin walled due to synchronized internal external threads. Thin cross sectional area allows for installation in areas of limited space and clearance material. TIME-SERT® Positive Placement. Having a flange on the top of the insert will insure that the insert will have positive placement and cannot wind down into the newly repaired hole. TIME-SERT® is self locking. On installation the bottom internal threads of the insert are cold rolled to expand the mating external threads into the base material locking the insert in place. Locking mechanism is at the bottom of insert Learn More

As Porsche increased displacement of the 911 engine, different rates of thermal expansion have caused head studs to break or pull out from the engine case. These Dilavar steel head studs are of the latest design and have a thermal expansion rate of approximately the same as the alloy case and are completely threaded through, unlike the older versions.    These latest design studs solve the problem of loose heads, engine exhaust leaks and broken head studs.   24 Per engine. Do not mix with different studs to insure exact expansion rates.  Learn More

A Must For Any Do-It-Yourself Its here. The ideal assortment of Factory-style metric hardware for working on your car. While this kit doesnt have every single bolt and nut, it does have many sizes unique to the kind youll never find at the local auto parts store. Select the bodywork hardware assortment or the general nut/bolt/washer assortment. Comes in a sturdy metal box. Learn More

Engine gasket sets from original equipment manufacturers such as Reinz and Ehlring. Learn More

90 x 100 x 12 Rear Main Seal (Flywheel Side) Installation of flywheel and from pulley seals are made easier with Oil Seal Installers found in the Tool Secton. Tech Tip: Never install a seal dry; add a thin film of oil on lip. Learn More

Heat-Treated Billet Washers For A Strong, Leak-Free Fit   These Billet, CNC Machined, hardened, .94” O.D. RACEWARE head washers fit the 1978 onward 911/993 engines. Unlike cheap stamp steel washers, RACEWARE Billet washers feature a precision CNC machined chamfer to eliminate stress risers that can occur with sharp edged stamped steel washers. RACEWARE washers are machined from a solid bar of Aerospace certified alloy steel, heat treated and black oxide coated. These RACEWARE washers provide proper distribution of the clamp force to prevent head gasket leaks and loss of power. Combine these superb washers with RACEWARE Ultimate head studs and Forged 12 Point Aircraft Nuts for optimum performance. Learn More

12-Point Cylinder Steel Head Nuts Featuring 180,000-PSI Tensile Strength Reduced Mass For Improved Cooling   RACEWARE Forged 12 Point Aircraft Nuts with anti-friction coating provide consistent, accurate clamp force to keep your Porsche 911/930/993 cylinder heads sealed tight. These easy to install nuts replace the OE barrel nuts and lower the cylinder head temp 15 F according to independent testing in Weissach, Germany. In addition these 12 Point Aircraft Nuts provide better clearance for the bottom sparkplug on dual sparkplug applications, making it much easier to change the lower sparkplug. Combine these Aircraft Nuts with the RACEWARE Billet, Hardened CNC machined head washers and Ultimate head studs for the best in cylinder head sealing for your Porsche engine. Fits OE or RACEWARE head studs. Learn More

7 Piece Set   TIME-SERT® is a solid bushing insert. This guarantees easy installation and allows for full load use of tapped hole, ensuring protection against stress and vibration. TIME-SERT® is thin walled due to synchronized internal external threads. Thin cross sectional area allows for installation in areas of limited space and clearance material. TIME-SERT® Positive Placement. Having a flange on the top of the insert will insure that the insert will have positive placement and cannot wind down into the newly repaired hole. TIME-SERT® is self locking. On installation the bottom internal threads of the insert are cold rolled to expand the mating external threads into the base material locking the insert in place. Locking mechanism is at the bottom of insert Learn More

5 Insert Set   TIME-SERT® is a solid bushing insert. This guarantees easy installation and allows for full load use of tapped hole, ensuring protection against stress and vibration. TIME-SERT® is thin walled due to synchronized internal external threads. Thin cross sectional area allows for installation in areas of limited space and clearance material. TIME-SERT® Positive Placement. Having a flange on the top of the insert will insure that the insert will have positive placement and cannot wind down into the newly repaired hole. TIME-SERT® is self locking. On installation the bottom internal threads of the insert are cold rolled to expand the mating external threads into the base material locking the insert in place. Locking mechanism is at the bottom of insert Learn More

OE Porsche® Germany Supplier For Complete Head Gasket Replacement From Either Reinz Or Elhring (Our Choice) Includes All Major Gaskets And Seals Performance Products is proud to bring you this OE gasket set from one of the original suppliers to Porsche® Germany. Head gaskets require proper torque and spacing to insure longevity and engine reliability. Why take chances with Brand-X? Buy the best from Performance Products and know you are getting the best parts for your Porsche®. Learn More

TIME-SERT® is a solid bushing insert. This guarantees easy installation and allows for full load use of tapped hole, ensuring protection against stress and vibration. TIME-SERT® is thin walled due to synchronized internal external threads. Thin cross sectional area allows for installation in areas of limited space and clearance material. TIME-SERT® Positive Placement. Having a flange on the top of the insert will insure that the insert will have positive placement and cannot wind down into the newly repaired hole. TIME-SERT® is self locking. On installation the bottom internal threads of the insert are cold rolled to expand the mating external threads into the base material locking the insert in place. Locking mechanism is at the bottom of insert Learn More

24 Piece Set   TIME-SERT® is a solid bushing insert. This guarantees easy installation and allows for full load use of tapped hole, ensuring protection against stress and vibration. TIME-SERT® is thin walled due to synchronized internal external threads. Thin cross sectional area allows for installation in areas of limited space and clearance material. TIME-SERT® Positive Placement. Having a flange on the top of the insert will insure that the insert will have positive placement and cannot wind down into the newly repaired hole. TIME-SERT® is self locking. On installation the bottom internal threads of the insert are cold rolled to expand the mating external threads into the base material locking the insert in place. Locking mechanism is at the bottom of insert. TIME-SERT® thread repair system the ultimate way to repair threads in stripped or damaged holes.   Learn More

Superior Noise Reduction  OEM Factory Appearance High-Tech Design Cut down the noise and heat coming from your engine compartment with this precision die cut firewall pad. It looks like a factory replacement part, yet superior materials and construction actually improve firewall insulation. Sound deadening felt with a reinforced foil backing reduces engine noise in the cabin, while a non-porous dense foam skin prevents heat transfer. Replace your deteriorated factory pad and improve cabin comfort simultaneously with the Ultimate Engine Pad. Learn More

12 Piece Set As Porsche increased the displacement of the 911 engine, the different rates of thermal expansion between the head studs and the alloy engine case halves caused head studs to break or pull out of the case. The first sign may be a sound like an exhaust leak, but it could be a cylinder head leaking where the studs have pulled loose. Porsche first attempted to solve the problem with Dilavar studs. Recently, Porsche replaced Dilavar studs with steel studs. The new studs are used on all 911 engines since 1990 and feature a micro-encapsulated surface designed to prevent corrosion (which now appears to have been a major cause of snapping head studs). These new studs also come with the case end threads coated with a locking compound. We offer the new micro-encapsulated studs with locking compound. (Make sure the threads in the case are free of dirt and oil; and be careful in installation not to scratch the stud coating). They can be installed individually, but most professional shops install a complete 24-stud set, as they believe this is cheap insurance against tearing the engine down a second time. Fit all 911, 930, 964, 993. Buy individually or get package savings. Learn More