The piston rings, located on each piston head, are used to create a seal between the combustion chamber and the crankcase, preventing blow-by and cleaning the cylinder walls of oil. If the piston rings have failed, the combustion chamber may fill with oil or be unable to obtain the correct compression in order for the combustion process to complete, causing misfires and a rough running engine. Compression testing is the best way to check the condition of the piston rings. If your compression numbers across the cylinders are low, it's probably time to replace the rings.
This is a piston ring set, of standard size, for each piston. New rings will restore your compression and keep your vehicle from burning oil and smoking.
Because piston ring replacement is such a large job, do ample research to find if you are going to be able to complete it yourself. Don't forget all the associated items that will need replaced such as gaskets, connecting rod bearings, and head bolts as well as any tools you may need.
This Part Fits the Following Vehicles
|Volkswagen||Jetta IV GLI||All||1.8T|
|Volkswagen||Passat B5||4 Motion||1.8T|