PAC Racing Steel C/M Spring Seats - 1.500 x .855 x .575 GBGSE 16 Fins Per Inch Core

16 Fins Per Inch Core -Allows more airflow to provide better cooling

and O-rings

They also fit a factory-equipped 351W 1969-73 Mustang (must be factory-equipped

5 in Primary

PAC Racing Steel C/M Spring Seats - 1.500 x .855 x .575 GBGSE 16 Fins Per Inch CoreProduct Description: Valve Spring Locator Inside 0. 060 in Thick 1. 550 in OD 0. 575 in ID 0. 800 in Spring ID Chromoly Set of 16 PAC Racing Springs is part of the Race Winning Brands Family. With more than 100 years of spring manufacturing experience. We understand the demands of racing and provide a commitment to all of our customers to provide the best service possible. We continue to expand products and offer expanded onsite technical services at