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Melling Engine Parts / Melling Tool Co. 478104
High Performance Engine Valve Spring Seat
PAC Racing Springs PAC-S136
SEAT CHROME MOLY SPRING; Chrome Moly - 1.270 in. OD - 0.680 in. First Step - 0.510 in. Second Step - 0.030 in. Thickness
Melling Engine Parts / Melling Tool Co. 478104-16
High Performance Engine Valve Spring Seat
PAC Racing Springs PAC-S137
SEAT 4140 BLK OXIDE; Chrome Moly - 1.400 in. OD - 0.685 in. First Step - 0.570 in. Second Step - 0.030 in. Thickness
PAC Racing Springs PAC-S137X
SEAT TOOL STEEL; Tool Steel - 1.400 in. OD - 0.685 in. First Step - 0.570 in. Second Step - 0.030 in. Thickness
PAC Racing Springs PAC-S138
SEAT CHROME MOLY SPRING; Chrome Moly - 1.270 in. OD - 0.615 in. First Step - 0.575 in. Second Step - 0.060 in. Thickness
PAC Racing Springs PAC-S140X
SEAT TOOL STEEL; Tool Steel - 1.400 in. OD - 0.685 in. First Step - 0.570 in. Second Step - 0.060 in. Thickness
