10 TITANIUM VALVE SPRING RETAINERS
Engine Pro titanium valve spring retainers are engineered to perform under the
most extreme conditions and are inspected to ensure precise tolerances.
Double Spring
Triple Spring
Manufactured from 6AL4V titanium alloy
Made in the USA - your assurance of quailty
C
D
Light weight
B
C
B
A
Machined and polished finish
A
PART #
SPRING O.D.
SPRING TYPE
VALVE STEM SIZE
AA
B
C
D
03-1717-16
1.275/1.325
DOUBLE
8mm
1.240
.940
.640
03-1730-16
1.437 / 1.500
DOUBLE
ALL
1.437
1.065
.700
03-1731-16
1.500 / 1.550
DOUBLE
ALL
1.437
1.100
.800
03-1732-16
1.500 / 1.550
DOUBLE
ALL
1.500
1.110
.710
03-1733-16
1.625
DOUBLE
ALL
1.500
1.180
.765
03-1736-16
1.500 / 1.550
TRIPLE
ALL
1.500
1.135
.835
.635
03-1739-16
1.625
TRIPLE
ALL
1.500
1.180
.870
.635
03-1735-16*
1.625
TRIPLE
ALL
1.500
1.180
.870
.635
03-1794-16
1.300
BEEHIVE
ALL
1.050
.640
*+.050 INStAlleD heIght oVer # 03-1739
STEEL VALVE SPRING RETAINERS
Engine Pro chrome moly steel retainers are designed to handle high pressures developed by new
large diameter valve springs. Our retainers are manufactured to precise tolerances to ensure the
springs are located properly. Available for 7 degree and 10 degree valve locks.
4140 chrome moly steel alloy
Heat treated
CNC machined
Black oxide finish
DIMENSIONS
PART #
SPRING O.D.
SPRING HEIGHT
KEEPER DEGREE
VALVE STEM SIZE
A
B
C
03-1000-16
1.250
STD
7
11/32"
1.245
.865
.680
03-1001-16
1.250
+.050
7
11/32"
1.245
.865
.680
03-1017-16
1.275/1.325
STD
7
8mm
1.240
.940
.640
03-1003-16
1.437/1.550
STD
7
11/32"
1.440
1.050
.700
03-1002-16
1.437/1.550
STD
10
ALL
1.440
1.050
.700
03-1005-16
1.437/1.550
STD
7
3/8"
1.440
1.050
.700
03-1006-16
1.437/1.500
STD
10
ALL
1.400
1.060
.690
03-1004-16
1.500/1.550
STD
10
ALL
1.437
1.100
.800
03-1007-16
1.500/1.550
+.100
10
ALL
1.500
1.115
.690
03-1008-16
1.550
+.100
10
ALL
1.500
1.105
.710
03-1009-16
1.550
+.100
10
ALL
1.500
1.120
.705
03-1010-16
1.437/1.550
+.100
7
11/32"
1.440
1.050
.700
03-1011-16
1.055
STD
7
8mm
1.030
0.640
BEEHIVE
03-1012-16
.959
STD
7
STOCK
0.930
0.630
BEEHIVE
03-1013-16
1.055
STD
7
11/32"
1.030
0.640
BEEHIVE
03-1014-16
1.095
STD
10
ALL
1.050
0.640
BEEHIVE
03-1015-16 *
1.055
STD
7
8mm
1.030
0.640
BEEHIVE
03-1016-16
1.437/1.500
STD
7
11/32"
1.400
1.030
.690
* SAme AS 03-1011 but I.D. IS mAChINeD for ADDItIoNAl VAlVe guIDe CleArANCe.
LASH CAPS
In extreme performance and racing conditions, lash caps are necessary to protect the valve tip from pounding
caused by an engine running on the edge of valve float. Lash caps must be used with titanium valves.
CNC machined from hardened 8620 steel
Finish lapped to insure a parallel plane
Edm oil hole prevents friction welding of cap to valve
Black oxide finish / made in the USA
OVERALL
THICKNESS
VALVE
PART #
DESCRIPTION
HEAD HEIGHT
STEM SIZE
04-1620-16
HARDENED LASH CAP
.230
.080
5/16"
04-1621-16
HARDENED LASH CAP
.210
.080
11/32"
04-1622-16
HARDENED LASH CAP
.190
.080
3/8"
NEW
NUMBERS SHOWN IN BOLD FACE TYPE
10