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Size comparison table：
40 0.040" / 1.02 mm
41 0.041" / 1.04 mm
42 0.042" / 1.06 mm
43 0.043" / 1.09 mm
44 0.044" / 1.12 mm
45 0.045" / 1.14 mm
46 0.0465" / 1.18 mm
47 0.047" / 1.19mm
48 0.048" / 1.22 mm
49 0.049" / 1.24mm
50 0.0496" / 1.26mm
51 0.050" / 1.27 mm
52 0.051" / 1.30mm
53 0.052" / 1.32 mm
54 0.053" / 1.34 mm
55 0.054" / 1.37 mm
56 0.055" / 1.397mm
57 0.056" / 1.42mm
58 0.057" / 1.45mm
59 0.058" / 1.47 mm
60 0.059" / 1.50mm
61 0.060" / 1.52mm
62 0.061" / 1.55 mm
63 0.062" / 1.57 mm
64 0.064" / 1.63mm
65 0.065" / 1.65mm
66 0.066" / 1.67 mm
67 0.068" / 1.73mm
68 0.069" / 1.75mm
69 0.070" / 1.78 mm
70 0.073" / 1.85 mm
71 0.076" / 1.93 mm
72 0.077" / 1.95 mm
73 0.079" / 2.00 mm
74 0.081" / 2.06 mm
75 0.082" / 2.08 mm
76 0.084" / 2.13 mm
77 0.086" / 2.18 mm
78 0.087" / 2.20 mm
79 0.089" / 2.5mm
80 0.090" / 2.30 mm
81 0.092" / 2.33mm
82 0.094" / 2.39 mm
83 0.0975" / 2.48 mm
84 0.099"/2.51 mm
85 0.100" / 2.54 mm
86 0.101" / 2.57mm
87 0.103" / 2.62 mm
88 0.104" / 2.64 mm
89 0.1045" / 2.65 mm
90 0.1055" / 2.68mm
91 0.1085" / 2.76 mm
92 0.110" / 2.79 mm
93 0.112" / 2.84 mm
94 0.1155" / 2.93 mm
95 0.1165" /2.95mm
96 0.1195" /3.04 mm
97 0.121" / 3.07 mm
98 0.124" / 3.15 mm
99 0.125" / 3.18 mm
100 0.126" / 3.20 mm
101 0.127" / 3.22mm
102 0.128" / 3.25 mm
103 0.130" / 3.30 mm
104 0.134" / 3.40 mm
105 0.137" / 3.48 mm
106 0.141" / 3.58 mm
107 0.145" / 3.68 mm
108 0.147" / 3.73 mm
109 0.150" / 3.81 mm
110 0.156" / 3.96 mm
maxgforce
April 11, 2025
Original Holley jets are stamped with the size and most of the time hard to read. These have the size Lazer etched into them, still need a light to see numbers but very easy to read.
Ken Meyers
February 4, 2025
These jets do screw into holley metering blocks but the jet numbers do not correlate to holley numbers.
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