VALVE STEM SEALS
Part No.
Description
I.D.
Guide Qty.
11/32" Diameter Air Flow Research - AFR AFR6612 Allstar Performance ALL90235 †
Viton, Metal Body, Positive Stop, GM LS1 Heads
8mm .530" 1
Rubber, Umbrella, Banded
.343" Stock 16 .343" .531" 16 .343" .500" 16 .343" Stock 16 .343" Stock 16 .343" .530" 16 .343" .485" 16 .343" .500" 16 .313" .530" 16 .343" .500" 16 .343" .530" 16 .344" .530" 16
ALL90240 † ALL90241 †
PTFE, Positive Stop PTFE, Positive Stop
Comp Cams COM501-16
OEM, Rubber, O-Ring Style
COM502-16 COM503-16 COM506-16 COM510-16 COM516-16 COM517-16 COM518-16 COM529-16
Rubber, Umbrella PTFE, Positive Stop
Viton Blue, Positive Stop
ALL90235
PTFE, Positive Stop
Viton, Metal Body, Positive Stop
Viton Blue, Positive Stop Viton Blue, Positive Stop
Viton, Metal Body, Positive Stop
Crane Cams CRN99820-16 CRN99826-16
PTFE, Positive Stop PTFE, Positive Stop
.343" .530" 16 .343" .500" 16
Dart
Rubber Seal, Metal Body, Positive Stop, All Dart Iron Eagle Heads
DRT26000021
.341" .530" 16
Edelbrock EDE9725
CRN99826-16
Viton, Metal Body, Positive Stop, All Edelbrock Performer, RPM (Exc. Ford FE)
.343" .530" 16
Chevrolet Performance GMP10212810
Rubber, Umbrella, LT4, ZZ4, and Most Chevy Performance Heads Nitrile Rubber, Positive Stop, Exhaust, LS7 Chevy Performance Heads
.341" .500" 1 Ea.
GMP12482062
.313" .500" 8
Howard Cams HRC93311
Ultimate Duty, DuPont Fluoropolymer, Positive Stop,
.341" .500" 16
Manley
MAN24035-16 MAN24037-16 MAN24041-8 MAN24042-8 MAN24043-8 MAN24045-8
PTFE, Positive Stop PTFE, Positive Stop
.343" .530" 16 .343" .500" 16 7mm .431" 8 .313" .500" 8 .343" .500" 8 .343" .530" 8
7mm, Viton Blue, Metal Body, Positive Stop 5/16", Viton Blue, Metal Body, Postive Stop 11/32" Viton Blue, Metal Body, Positive Stop 11/32", Viton Blue, Metal Body, Positive Stop
Pioneer PIOOS-1066-100 PIOOS-1090-100
PTFE, Positive Stop PTFE, Positive Stop
.343" .530" 100 .343" .500" 100
3/8" Diameter Allstar Performance ALL90242*
PIOOS-1066-100
PTFE, Positive Stop
.375" .531" 16
Comp Cams COM504-16
Rubber, Umbrella PTFE, Positive Stop PTFE, Positive Stop Viton Blue, Metal Body Viton Blue, Metal Body
.375" Stock 16 .375" .530" 16 .375" .500" 16 .375" .500" 16 .375" .530" 16 .375" .500" 16 .375" .530" 16
COM505-16 COM512-16 COM514-16 COM515-16 COM521-16 COM522-16
Viton, Metal Body Viton, Metal Body
Crane Cams CRN99828-16 CRN99822-16 Edelbrock EDE9759
PTFE, Positive Stop PTFE, Positive Stop
.375" .500" 16 .375" .530" 16
ALL90242
Viton, Metal Body, Positive Stop, All Edelbrock Performer, RPM Heads
.375" .562" 16
Manley
MAN24044-8 MAN24046-8
Viton, Metal Body, Positive Stop Viton Blue, Metal Body, Positive Stop
.375" .500" 8 .343" .530" 8
† Available in quantities of 100 by adding "-100" to the end of the part number.
556 2021-22 ENGINE BUILDER CATALOG
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