Standard valve springs reach only 85 kg. FVD-motorsport-springs have up to 105 kg! The desired value for race-engines is max. 104 kg! The electronic spring scales is recommended to check the spring force. That is a need for optimally calculation of the valve spring mounting-lengths.example: length with 104 kg + lifting = mounting-length of the valve-spring.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

Genuine part sourced from Porsche ag in Germany to ensure quality, reliability and precise fitment. Sold individually.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

View/Change Diagram

356 1960-65 - Fuel/Exhaust	912 1965-69 - Fuel/Exhaust
911 1965-69 - Fuel/Exhaust

Einstellwerkzeug fur einbaumass serien-ventilfeder mit serien-nockenwellen von 34,5mm - 35,5 mm im 1mm schritt skaliert.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

12 required per engine replaces 90110590151

This schley brothers original tool has been designed to allow removal and installation of valve springs while the engine is both fully assembled and still in the car. It is professionally made of high quality materials to handle not only stock springs but the pressures of all high performance springs.

As valve guides age, they lose their ability to locate the valve to the valve seat. That can create a loss of performance due to the ineffective seal of the combustion chamber. Be sure to replace your guides when replacing valves, valve springs, etc. Sold individually. 6 necessary per vehicle.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

When working on your cylinder head, we recommend replacing the valves, valve seat rings, guides, springs, retainers and temperature sensor at the same time to reduce future labor costs. Cost effective, German made exhaust valve for the 964 c2 / c4 and rs that have the m64.01/02/03 motors. Sold individually. 6 necessary per car.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

Exhaust valve for 993 models from 1996-98 with m64.21/22/23/24 motors. 8 mm stem, 43.5 mm, weighs .22 lbs. (.1 kg). Sold individually. 6 necessary per car. When working on your cylinder head, we recommend replacing the valves, valve seat rings, guides, springs, retainers and temperature sensor at the same time to reduce future labor costs.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

Exhaust valve for 993 models from 1994-1995 with m64.05/06/07/08 motors. 8 mm stem, 42.5 mm, weighs .22 lbs. (.1 kg). Sold individually. 6 necessary per car. When working on your cylinder head, we recommend replacing the valves, valve seat rings, guides, springs, retainers and temperature sensor at the same time to reduce future labor costs.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

As valve guides age, they lose their ability to locate the valve to the valve seat. That can create a loss of performance due to the ineffective seal of the combustion chamber. Be sure to replace your guides when replacing valves, valve springs, etc. Sold individually. 6 necessary per vehicle.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

Whether you bent all the valves in your 944 when the cam belt broke or you have a 924 that is just tired and needs some top end attention, we can help! Let our expert machine shop take the hassle out of cylinder-head remanufacturing. Install our rebuilt units with confidence. All cylinder heads include new valves, valve guides, valve springs and valve seals (and a 6-month, 6,000-mile warranty).

As valve guides age, they lose their ability to locate the valve to the valve seat. That can create a loss of performance due to the ineffective seal of the combustion chamber. Be sure to replace your guides when replacing valves, valve springs, etc. High-quality OEM replacement, designed to perform like the original. We source this part in Germany to ensure quality, reliability and precise fitment. Sold individually. 6 necessary per vehicle.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

A liquid sodium filled valve transfers heat away from the head towards the valve guide in order to reduce combustion chamber temperatures. This is the valve of choice when rebuilding motors. When working on your cylinder head, we recommend replacing the valves, valve seat rings, guides, springs, retainers and temperature sensor at the same time to reduce future labor costs. Sold individually. 6 necessary per car.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

When working on your cylinder head, we recommend replacing the valves, valve seat rings, guides, springs, retainers and temperature sensor at the same time to reduce future labor costs. High-quality trw OEM (original equipment manufacturer) replacement, designed to perform like the original. We source this part in Germany to ensure quality, reliability and precise fitment. Sold individually. 6 necessary per car.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

When working on your cylinder head, we recommend replacing the valves, valve seat rings, guides, springs, retainers and temperature sensor at the same time to reduce future labor costs. Quality German aftermarket replacement designed to perform like the original. Sold individually. 6 necessary per car.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.

When working on your cylinder head, we recommend replacing the valves, valve seat rings, guides, springs, retainers and temperature sensor at the same time to reduce future labor costs. Quality German aftermarket replacement designed to perform like the original. Sold individually. 6 necessary per car.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.