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Ships within 48 hours · Estimated delivery Sep 1 - Sep 6
The one-piece sealed housing is designed to replace multi-piece housings
purchase 20-1533
Starting off with its smooth curves
Part Numbers: Finish: FMDVRSA-34PS
See the ETS FMIC for 04-07 STi
Tomei Valve Seat Rings for 4G63 Evo/ DSM (TA310A-MT01A) PTP The one-piece sealed housing isTomei valve seat rings for the Evo and DSM are designed to effectively dissipate heat in the 4G63 engine, preventing cracking. Achieving high engine output under high rotation and load is difficult if cylinder cooling is inadequate, as this leads to high cylinder head temperatures and a low knock limit. Racing engines utilize high conductivity metals, such as copper, for valve seats to manage heat. Beryllium copper alloy (BeCu) is ideal due to its
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