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34-7BK Black Needle & Seat adjusting nut & lock screw kit - black 34-7BK
Black Needle & Seat adjusting nut & lock screw kit – black
Replacement needle and seat lock screw and adjustment nut for carburetors with black hardware. Works with all Holley carburetors with an adjustable needle and seat 
6-522 Fuel Inlet Needle and Seat 6-522
Fuel Inlet Needle and Seat
Inlet Needle Viton® Tip Adjustable 0.130" Seat Size.  
6-504 Inlet Needle - Viton® 6-504
Inlet Needle – Viton®
Inlet Needle Viton® Tip Adjustable 0.110" Seat Size
(Viton® is a registered trademark of DuPont Performance Elastomers) 
6-506 Inlet Needle - Viton® 6-506
Inlet Needle – Viton®
Inlet Needle Viton® tip 0.097" Seat Size, Adjustable
(Viton® is a registered trademark of DuPont Performance Elastomers) 
6-508 Inlet Needle - Viton® 6-508
Inlet Needle – Viton®
Inlet Needle Viton® tip Adjustable 0.097" Seat Size
(Viton® is a registered trademark of DuPont Performance Elastomers) 
6-510 Inlet Needle - Viton® 6-510
Inlet Needle – Viton®
Inlet Needle Viton® tip Non–Adjustable 0.110" Seat Size,
(Viton® is a registered trademark of DuPont Performance Elastomers) 
6-511 Inlet Needle - Viton® 6-511
Inlet Needle – Viton®
Inlet Needle Viton® tip, Nonadjustable 0.101 in. Seat Size (Viton® is a registered trademark of DuPont Performance Elastomers) 
6-513 Inlet Needle - Viton® 6-513
Inlet Needle – Viton®
Inlet Needle Viton® tip 0.097" Seat Size Off Road, adjustable
(Viton® is a registered trademark of DuPont Performance Elastomers) 
6-518-2 Inlet Needle - Viton® 6-518-2
Inlet Needle – Viton®
Inlet Needle Viton® Tip Adjustable 0.120" Seat Size
(Viton® is a registered trademark of DuPont Performance Elastomers) 
6-500-2 Inlet Needle Steel 6-500-2
Inlet Needle Steel
Inlet Needle Steel Seat Size 0.110" in. Adjustable  
6-501-2 Inlet Needle Steel 6-501-2
Inlet Needle Steel
Inlet Needle Steel Seat Size 0.097 in. Adjustable  
6-502-2 Inlet Needle Steel 6-502-2
Inlet Needle Steel
Inlet Needle Steel Seat Size 0.120", Adjustable  
6-515-2 Inlet Needle Steel 6-515-2
Inlet Needle Steel
Inlet Needle Steel Seat Size 0.130" Adjustable  
6-519-2 Inlet Needle Steel 6-519-2
Inlet Needle Steel
Inlet Needle Steel Seat Size 0.150", Adjustable  
6-521 Inlet Needle Titanium 6-521
Inlet Needle Titanium
Inlet Needle Titanium Seat Size 0.150" 
1018-135 Needle & Seat Assembly 1018-135
Needle & Seat Assembly
10 pack of part number 6–504 Needle & Seat Assembly. Adjustable 0.110" Seat Size  
34-7 Needle And Seat Hardware Kit - Gold 34-7
Needle And Seat Hardware Kit – Gold
Gold Needle & Seat adjusting nut & lock screw 

Needle and Seat Assemblies






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