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1971 Honda CB450K Carburetor Repairs, Intakes & Fuel Fittings

Use the carburetors and tank fitted to your 1971 CB450K to build a focused fuel repair order. Identify internal service needs, holder mounting and tank fittings separately. A kit’s contents and coverage then help you decide which additional parts belong in the same purchase.

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Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

Honda CB rear fuel tank holder rubber 17613-292-000

Honda CB Rear Fuel Tank Holder Rubber ~ Replaces 17613-292-000

$14.95 USD
02-6535
Secure your fuel tank at the rear with this Rear Fuel Tank Holder Rubber, a direct replacement for OEM #17613-292-000. One used per bike,...
Honda CB front fuel tank holder rubber 17611-283-010

Honda CB Front Fuel Tank Holder Rubber ~ Replaces 17611-283-010

$7.87 USD
02-6534
Secure the front of your fuel tank with this Front Fuel Tank Holder Rubber, a direct replacement for OEM #17611-283-010. Fits a broad range...
Honda CB750 CB550 CB500 CB450 type filler chrome cap 17510-323-310

Honda CB OEM Type Filler Chrome Cap ~ Replaces 17510-323-310

$49.95 USD
20-0045
Replace your OEM-type filler cap with this OEM Type Gas/Fuel Tank Chrome Cap, including gasket and hinge pin with E-clip for easy installation. Replaces...
Honda CB750 CB550 CB500 CB450 CB400 gas fuel tank cap latch assembly

Honda CB Gas/Fuel Tank Cap Latch Assembly

$44.95 USD
20-0083
Replace your gas cap latch with this Gas/Fuel Tank Cap Latch Assembly. Includes a chrome latch, return spring, latch mounting pin, and C-clip.Key Features•...
Honda CB750 CB500 CB450 CB125 CB100 float valve 16011-302-004

Honda CB Float Valve ~ Replaces 16011-302-004

$9.95 USD
48-5009
Replace your float needle and seat with this Float Valve Set (needle and seat), replacing OEM #16011-302-004 / #16011-375-004.Key Features• Float valve set (needle...
Honda CB750 CB550 CB500 CB450 CB400 float bowl drain screw

Honda CB Stock Type Float Bowl Drain Screw

$7.50 USD
48-5041
Replace your stock-type float bowl drain screw with this Float Bowl Drain Screw with O-Ring.Note: sold each, order the quantity you require.Key Features• Stock-type...
Honda CB750 CB450 CB350 CL350K3 gas cap rubber seal 17525-300-000

Honda CB Gas Cap Rubber Seal ~ Replaces 17525-300-000

$5.95 USD
20-0038
Replace your early Honda gas cap rubber seal with this Gas Cap Rubber Seal, replacing OEM #17525-300-000. Fits the earliest CB750K, CB450K/CL450K, and CB350K/CL350K/SL350K.Key...
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Honda CB1000 CB900 CB750 fuel tank emblem clamp nut 87311-634-600

Honda CB Fuel Tank Emblem Clamp Nut ~ Replaces 87311-634-600

$6.25 USD
99-5267
Secure your fuel tank emblem properly with this Fuel Tank Emblem Clamp Nut, designed as a direct replacement for the original Honda hardware. This...
Honda CB450 CB360 CB350 CL350K0 CL350K2 fuel petcock 16950-292-000

Honda CB Fuel Petcock ~ Replaces 16950-292-000

$34.95 USD
29-0542
Replace your CB450, CL450, CB350, or CB360 fuel petcock with this Fuel Petcock, replacing OEM #16950-292-000 with M16 x 1.5 threads. Please verify the...
Honda CB750 CB550 CB450 CB400F fuel tank cap latch 17510-323-310

Honda CB Matte Black Fuel Tank Cap with Latch ~ Replaces 17510-323-310

$69.95 USD
07-9967
Restore your classic Honda's tank with a factory-look matte-black finish using this Matte Black OEM-Type Fuel Tank Cap with Latch Assembly. A direct replacement...
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Honda CB450 premium carb rebuild kit

1965-74 Honda CB450 Premium Carb Rebuild Kit

$21.95 USD
48-1228
Restore smooth fuel delivery with this Premium Carburetor Rebuild Kit, designed to refresh worn components inside your carburetor and restore proper performance. This kit...
Universal motorcycle carburetor synchronizer vacuum gauge 2 carb synchronizer

Universal Motorcycle Carburetor Synchronizer Vacuum Gauge ~ 2 Carb Synchronizer

$54.95 USD
37-0003
Carburetor and throttle body synchronizer kit for bikes with 2 Carbs. Makes synching your carburetor setup fast and easy! For use with Honda, Kawasaki,...
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Honda CB750 CB550 CB400F CB450 CB360 tank cap latch assembly black

Honda CB Gas/Fuel Tank Cap Latch Assembly ~ Black

$29.95 USD
01-9934
Replace a broken, missing, or worn-out fuel cap latch with this Gas/Fuel Tank Cap Latch Assembly in black. Includes the black latch, return spring,...
Honda CB500 CB450 CL450K0 CL450K2 CL450K3 carb float 16013-283-004

Honda CB Carb Float ~ Replaces 16013-283-004

$17.95 USD
20-6512
Replace your CB500T or CB450/CL450 carb float with this Carb Float with Pin, replacing OEM #16013-283-004.Sold each, order the quantity your bike requires.Key Features•...
Universal motorcycle 49mm chrome cap pod air filter

Universal Motorcycle 49mm Chrome Cap POD Air Filter

$24.95 USD
15-0034
49mm Chrome Cap POD Air Filter for custom or restoration work on classic Honda CB motorcycles. Measure the outside diameter of the carburetor inlet...
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Honda CB450K CL450K carb rebuild kit

1968-71 Honda CB450K / CL450K Carb Rebuild Kit

$19.95 USD
48-1395
Rebuild your early 5-speed CB450 or CL450 carbs with this Carb Rebuild Kit, designed for carburetor models 14H and 14L used on 5-speed 450s.There...
Honda CB750 CB550 joker machine black gas tank cap latch assembly

Honda CB Joker Machine Black Gas Tank Cap Latch Assembly

$79.95 USD
73-1157
Upgrade your fuel tank latch with the Joker Machine Custom Black Gas/Fuel Tank Cap Latch Assembly. Designed as a premium alternative to the discontinued...
Honda CB450 CL450K0 CL450K2 CL450K3 CL450K4 carb holder 16211-283-000

Honda CB Carb Holder ~ Replaces 16211-283-000

$23.95 USD
48-1475
Replace a single CB450 or CL450 carb holder with gasket using this Carb Holder with Gasket, replacing OEM #16211-283-000.Note: this is for one holder....
Honda CB500T CB450 CB360 CB350 slow pilot jet #35 99124-286-0351

Honda CB500T / CB450 / CB360 / CB350 Slow / Pilot Jet #35 ~ Replaces 99124-286-0351

$7.00 USD
48-1587
Restore clean idle and low-speed fuel metering with this aftermarket Keihin-style slow / pilot jet, size #35. It replaces Honda OEM #99124-286-0351 for the...
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1971 Honda CB450K · Fuel System Buying guide

Choose the service scope for the components you retain

A premium kit itemizes its parts, while the other kit identifies 14H and 14L carburetors. The petcock specifies its thread and the holder specifies its individual contents. Compare those details with the fitted assemblies before combining separate fuel repairs.

Parts to consider

1965-74 Honda CB450 Premium Carb Rebuild Kit Itemized premium carburetor kitOne kit rebuilds one carburetor. Named contents include bowl and top gaskets, O-rings, float needle, #2.0 seat, #125 main, #40 pilot and D8 needle. Compare the stated parts with the carburetor and service work planned.View part Honda CB Fuel Petcock ~ Replaces 16950-292-000 Fuel petcock with M16 × 1.5 threadReferences Honda 16950-292-000. The description requires verification of the stated M16 × 1.5 thread before ordering. Compare the outlet on the tank you plan to use, including any replacement tank.View part Honda CB Carb Holder ~ Replaces 16211-283-000 One holder supplied with gasketSingle carburetor holder referencing Honda 16211-283-000. Its gasket is included; two holders are used per bike. The required band clamp is separate, so inspect the retained clamp when counting the positions being renewed.View part

Related parts: Kit restricted to 14H / 14L · Synchronizer connection checks · 49mm pod mounting checks

Count each repair from its stated coverage

A carburetor kit covers one carburetor, and the holder purchase supplies one holder with gasket. Front tank cushions and emblem nuts are explicitly sold individually. Inspect the positions being renewed and use each product’s contents description; their shared model application does not establish a common package quantity.

Check tool and filter connections before choosing them

The synchronizer is a universal two-carburetor tool with 5mm-threaded extensions, not confirmation that the fitted carburetors have suitable vacuum ports. Establish accessible compatible connections first. The universal pod also needs an inlet outside-diameter measurement, enough mounting room and assessment of possible tuning work.

Questions to help choose the repair parts

How should I choose between the two carburetor kits?

Identify the fitted carburetors and the parts needing renewal. The model-specific kit names 14H and 14L, while the premium kit itemizes valve, gasket and metering parts. Compare those restrictions and contents rather than selecting from the motorcycle year alone.

Can I add the synchronizer solely because the motorcycle uses two carburetors?

It is intended for two-carburetor use, but needs compatible accessible vacuum connections. Compare the fitted carburetors and the included 5mm-threaded adapters. Neither the tool’s broad application nor the CB450K name establishes the required ports.

What should I check when the tank was replaced earlier?

Verify the outlet thread, cap attachment and mounting points on the replacement tank directly. The petcock asks for an M16 × 1.5 thread check. Original motorcycle application cannot identify every fitting used on a tank installed during later work.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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