NEW NITRO BLACK DIESEL PERFORMANCE VALVES
For Ford Powerstroke, GM Duramax and Dodge Cummins Engines
FEATURES
Our diesel performance valves are de-
Exotic inconel al oy is designed to function in extreme
signed to perform reliably in the extreme
heat and stress conditions
conditions that exist in highly boosted
Stel ite facing creates additional heat resistance on the head
turbo diesel engines.
of the valve
Bi-metal ic exhaust valves are made
from inconel and HNV-3 al oys and are
Liquid nitriding strengthens the entire valve material -
stel ite faced to operate under extreme
not just the surface area
heat conditions.
Better ductility beneath the extremely hard magnetite outer layer
Intake valves are made from 21-4N
makes the valve less likely to break, even if contacted by a piston
al oy steel. Both intake and exhaust
valves are put through our proprietary
Greater surface hardness reduces crack formation
five step liquid nitriding process, result-
Smoother, stronger surface means less valve and valve guide wear
ing in valves that are smoother, stronger
than chrome
and more corrosion resistant than tradi-
tional chrome plated stainless valves.
Resists corrosion and deposits caused by exotic fuels
ENGINE PRO NITRO BLACK DIESEL PERFORMANCE VALVES
APPLICATION
PART #
TYPE
HEAD DIA
STEM DIA
OVERALL LGTH
TIP LGTH
SEAT ANGLE
DODGE/CUMMINS ISB 5.9L
01-4991-12
EXH
1.299
0.2756
4.893
0.299
45 DEG.
6.6L TURBO (98-10) 24 VALVES
01-4990-12
INT
1.299
0.2756
4.907
0.299
30 DEG.
FORD 6.0L POWERSTROKE
01-4985-8
EXH
1.102
0.2738
5.059
0.358
37 DEG.
NAVISTAR TURBO (03-10) 32 VALVES
01-4984-8
INT
1.139
0.2738
5.059
0.358
30 DEG.
FORD 6.4L POWERSTROKE
01-4987-8
EXH
1.161
0.2734
5.138
0.433
39.3 DEG.
NAVISTAR TURBO (08-10) 32 VALVES
01-4986-8
INT
1.339
0.2736
5.138
0.433
37 DEG.
FORD 6.7L POWERSTROKE
01-4989-8
EXH
1.195
0.2748
5.242
0.699
29.3 DEG.
FORD TURBO (2011 - ON) 32 VALVES
01-4988-8
INT
1.331
0.2748
5.242
0.699
29.3 DEG.
FORD 7.3L POWERSTROKE
01-4983-8
EXH
1.681
0.3122
5.801
0.289
37.3 DEG.
NAVISTAR 444TE TURBO (94-03)
01-4982-8
INT
1.681
0.3122
5.798
0.339
30 DEG.
16 VALVES
GM 6.6L DURAMAX DD
01-4995-8
EXH
1.220
0.2730
4.965
0.519
45 DEG.
(01-13) 32 VALVES
01-4994-8
INT
1.299
0.2741
4.975
0.519
45 DEG.
NOTE:
32 VALVE ENGINES REQUIRE 2 BOXES OF 8 EXHAUST VALVES AND 2 BOXES OF 8 INTAKE VALVES TO
REPLACE VALVES IN COMPLETE ENGINE
PERFORMANCE INCONEL ALLOY VALVES
For marine and supercharged applications
Exotic alloy designed to function in extreme heat conditions
One piece forging
Swirl polished for improved flow characteristics
Hard wafer tip
HEAD
STEM
INSTALLED
OVERALL
TIP
PART #
TYPE
DIAMETER
DIAMETER
HEIGHT
LENGTH
LENGTH
CHEVROLET BIG BLOCK
01-4301-8 INCONEL
EXH
1.890
3/8"
+0.048
5.400
.250
01-4312-8 INCONEL
EXH
1.880
11/32"
+0.098
5.450
.250
01-4313-8 INCONEL
EXH
1.900
11/32"
+0.098
5.450
.250
NEW
NUMBERS SHOWN IN BOLD FACE TYPE
5