Ferrea Valve Stem Seal Kit for 4G63 (VS1010 VS1011) Tial Plastic is prone to failure

Plastic is prone to failure after years of constant temperature variations

APR’s design requirements called for an intake filter medium that exhibited high flow capabilities

Nissan recommends this maintenance at 36

Purchase includes two discs

Ferrea Valve Stem Seal Kit for 4G63 (VS1010 VS1011) Tial Plastic is prone to failureFerrea Viton Valve Stem Seals for the 4G63 Mitsubishi 1G 2G DSM, GVR4 and Evo models. These Ferrea seals have a high temperature of 475F. STM packs these conveniently as a full kit including 8 intake and 8 exhaust valve stem seals. They are very similar in size. If you get them mixed up, the exhaust seals have a small "70" on them and the intake seals have a "41". Vehicle Fitment: 1992 2006 Evolution I IX 1990 1999 Eclipse GST GSX 1990 1998 Talon TSi