Air Cleaner, Throttle Body And Base Gaskets Gaskets are for replacement purposes and are sold individually unless specified. Part No. Description HLY108-4
Fuel Bowl And Metering Block Gaskets Gaskets are for jet changes in the pits. Two per pack. Part No. Description Fuel Bowl Gaskets HLY108-83-2 Blue Non-Stick For 2300, 4150/4160 And 4500 2-Circuit Carbs HLY108-92-2 Blue Non-Stick For 4165, Some 4150/4160 Primary Side And 2300 HLY108-120 Blue Non-Stick For 4150/4160 HLY108-199 Blue Non-Stick For 4500 3-Circuit Metering Block Gaskets HLY108-36-2 Std. Cork For 4500 w/Intermed. System Incl. List 6214 And 6464 HLY108-55-2 Std. Cork For 4180 HLY108-89-2* Blue Non-Stick, Most 4150’s, Some 4160’s, Early 4165’s, Most 2300’s And All 4500’s Without Intermediate System HLY108-90-2 Blue Non-Stick For Secondary Bowl/Metering Plate On Many 4160/4175 HLY108-91-2 Blue Non-Stick, Used As Primary/Secondary Gaskets On 4165/75 And Some 4150 Blue Non-Stick For Most 4150’s, Some 4160’s, Early 4165’s, Most 2300’s And All 4500’s Without Intermediate Idle System. Secondary Metering Block Gasket On Double Pumpers. HLY1008-1907-1 Blue Non-Stick For 2300, 4150, 4160 And 4500 w/o Intermediate Circuit, 10-Pack HLY108-198 Blue Non-Stick For 4500 3-Circuit Secondary Metering Plate Gasket HLY108-27-2 Some Model 4460’s, Same Pattern Used On Metal 1034-1193 Metering Body Plate * Not used with accelerator pump transfer tube. Gasket Assortment Kits kits cover most popular Holley 4bbl. carburetors. Use the gasket listings to determine the correct kit number (see top of this column). Part No. Description HLY108-200 Includes Two Each: HLY108-89-2 And HLY108-83-2 HLY108-201 Includes One Each: HLY108-27-2, 108-89-2, 108-90-2 And 108-83-2 HLY108-202 Includes One Each: HLY108-27-2, 108-90-2, 108-91-2 And 108-92-2 HLY108-203 Includes Two Each: HLY108-91-2 And HLY108-92-2 Gaskets Fuel Bowl Screw And Gasket Kit HLY26-124 HLY108-121* Fuel bowl and metering block gaskets are available packaged together. Four
Air Cleaner Gasket, 5" Dia., .060" Thick, 3-Pk. Air Cleaner Gasket, 5" Dia., .200" Thick Air Cleaner Gasket, 7" Dia. (Dominator), .060" Thick
HLY108-62 HLY108-73 HLY108-5 HLY108-7 HLY108-12 HLY108-10 HLY108-18 HLY108-58 HLY108-84-2
Throttle Body Gasket, 4150/4160, 1-11/16" x 1-11/16" Bore Size Throttle Body Gasket, 4150/4160, 1-3/4" x 1-3/4" Bore Size Base Gasket, 4010, 4150/4160, 5/16" Thick With Studs Included
Base Gasket, 4150/4160, 1/16" Thick
Base Gasket, Split, Model 4010/4150/4160 x 1-3/4", 5/16" Thick
Base Gasket, 4-Hole, 4150/4160/4180, x 1-9/16" Base Gasket, Dominator 4500/4500 HP, 1/16" Thick
Fuel Bowl Sight Plug And Gasket Kits Part No. Description HLY26-13 Standard Replacement, Pair HLY26-112 Sight Window Service Part For 34-37 Or 34-38 Idle Mixture Screw And Gasket Part No. Description HLY26-101 Idle Mixture Screw HLY26-110-10 Idle Mixture Screw Gaskets, Cork, Pkg. 10 Transfer Tube O-Rings And Seals Part No. Description
HLY26-37 Transfer Tube O-Ring, Old Style, Pair HLY108-97 Transfer Tube Seal, New Style, Pair Standard Main Jets
Holley Main Jets are threaded for ease of installa- tion. To order, use prefix HLY122- followed by the jet number from chart. Example: HLY122-40 (has an approxi- mate hole size of .040" diameter).
Jet No.
Hole Size
Jet No.
Hole Size
Jet No.
Hole Size
Jet No.
Hole Size
Jet No.
Hole Size
40 .040" 42 .042" 43 .043" 44 .044" 45 .045" 46 .046" 47 .047" 48 .048" 49 .048" 50 .049" 51 .050" 52 .052" 53 .052" 54 .053"
55 .054" 56 .055" 57 .056" 58 .057" 59 .058" 60 .060" 61 .060" 62 .061" 63 .062" 64 .064" 65 .065" 66 .066" 67 .068" 68 .069"
69 .070" 70 .073" 71 .076" 72 .079" 73 .079" 74 .081" 75 .082" 76 .084" 77 .086" 78 .089" 79 .091" 80 .093" 81 .093" 82 .093"
83 .094" 84 .099" 85 .100"
97 .125" 98 .125" 99 .125"
Fits primary side of 4500, 4175, 4150 and 4160. Includes (1) primary fuel bowl gasket for 2-circuit, (1) primary fuel bowl gasket for 4165/4175, (4) primary bowl screws and (4) fuel bowl screw gaskets. Heli-Coil Kit For Float Bowl Required to repair stripped float bowl threads. Part No. Description HLY26-2 Installation Tool Kit With Inserts And Tap, Requires 15/64" Drill Bit HLY26-3 Heli-Coil Inserts
86 .101" 100 .128" 87 .103" 101 .126" 88 .104" 102 .128" 89 .104" 103 .130" 90 .104" 104 .134" 91 .105" 105 .137" 92 .105" 106 .141" 93 .105" 107 .145" 94 .108" 108 .147" 95 .118" 109 .150"
96 .118" 110 .156" Note: All sizes shown are for reference use only. Actual control of size is by flow check. In all instances, a higher stamped number indicates a greater average flow rate. Do not drill or damage the jet metering orifice. Change jets to meet specific requirements. Alcohol Jets Standard length alcohol jets are used with the 950 HP carburetor models HLY0-80542-1, HLY0-80535-1 and HLY0-80498-1 and will work with a stock float. To order, use prefix HLY122- followed by the jet number from chart. Example: HLY122-132 (has an approximate hole size of .132" diameter). Jet No. Hole Size Jet No. Hole Size Jet No. Hole Size 132 .132" 150 .150" 172 .172" 136 .136" 152 .152" 176 .176" 138 .138" 154 .154" 180 .180" 140 .140" 156 .156" 184 .184" 142 .142" 158 .158" 188 .188" 144 .144" 160 .160" 192 .192" 146 .146" 164 .164" 196 .196" 148 .148" 168 .168" 200 .200"
Fuel Inlet Fitting Gaskets Part No. Description HLY26-102
7/8" Nylon, Fuel Bowl Inlet Fitting Gasket 9/16", Fuel Bowl Inlet Fitting Gasket 7/8", Fuel Bowl Inlet Fitting Gasket
HLY108-1 HLY108-8
Bowl Screw Gaskets Includes 20 gaskets. Part No.
Description
HLY108-2-20 HLY108-98-10
Standard Replacement Paper Gaskets
Reusable Nylon Gaskets
344
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