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1972 Honda CB350K4 Fuel System & Carburetor Parts

A reliable fuel-system order starts at the tank and follows the installed parts to the carburetors. On a 1972 CB350K4, check the petcock connection, carburetor bowl style and intake holders before choosing between a small leak repair and a broader rebuild.

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Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
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Choose your model and year to see parts listed for your bike.

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Honda CB750 CB550 CB500 CB400 CB360 gas cap rubber seal 17534-323-300

Honda CB Gas Cap Rubber Seal ~ Replaces 17534-323-300

$8.19 $7.95 USD
You save $0.24
20-0039
Replace your mid-'70s Honda gas cap rubber seal with this Gas Cap Rubber Seal, replacing OEM #17534-323-300. Broad fitment across the SOHC CB750K, CB500/CB550...
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 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...
New
Honda CB550 CB500 CB360 rear fuel tank holder rubber 17613-286-000

Honda CB Rear Fuel Tank Holder Rubber ~ Replaces 17613-286-000

$9.95 USD
12-0133
Restore proper rear fuel tank mounting on your mid-'70s twin or four with this Rear Fuel Tank Holder Rubber, a direct replacement for OEM...
Honda CB550 CB500 CB400 CB350 float bowl gasket

Honda CB550 / CB500 / CB400 / CB350 Float Bowl Gasket

$7.00 USD
20-5022
Replace your float bowl gasket with this Float Bowl Gasket (O-ring), fitting the CB500K/CB550 family, CB350F Supersport, and CB350K.Key Features• Float bowl gasket (O-ring)Fitment...
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...
Honda CB750 CB450 CB350 CB200 CB175 front cable clip 45465-270-000

Honda CB Front Cable Clip ~ Replaces 45465-270-000

$7.00 USD
73-1116
Keep your wiring clean and secure with this Front Cable Clip, designed to hold the stop switch wires neatly against the front cable. Replaces...
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 CB350 CL350K0 CL350K2 CL350K3 float needle and seat 16011-287-004

Honda CB Float Needle & Seat ~ Replaces 16011-287-004

$13.95 USD
48-1519
Replace your CB350 or CL350 float needle and seat with this Float Needle & Seat, made in Japan, replacing OEM #16011-287-004.Key Features• Float needle...
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...
View details
Honda CB350 CL350 slow pilot jet #38 99124-286-0380

1968-73 Honda CB350 / CL350 Slow / Pilot Jet #38 ~ Replaces 99124-286-0380

$7.00 USD
48-1588
Restore clean idle and low-speed fuel metering with this aftermarket Keihin-style slow / pilot jet, size #38. It replaces Honda OEM #99124-286-0380 for select...
Honda CB350 CL350K0 CL350K2 carb holder w gasket 16211-286-040

Honda CB Carb Holder with Gasket ~ Replaces 16211-286-040

$27.03 USD
48-1473
Replace a single CB350 or CL350 carb holder with gasket using this Carb Holder with Gasket, replacing OEM #16211-286-040 (holder) and #16229-369-000 (gasket).Note: this...
Honda CB front fuel tank rubber cushion 17611-KE8-000

Front Fuel Tank Rubber Cushion ~ Replaces Honda OEM 17611-KE8-000

$5.50 USD
27-5520
This aftermarket front fuel tank rubber cushion replaces Honda OEM 17611-KE8-000 on the listed Honda CB-series applications. It mounts to the frame and supports...
Honda CB550 CB500 CB400 CB350 secondary main jet 68 99202-601-0680

Honda CB Secondary Main Jet #68 with O-Ring ~ Replaces 99202-601-0680

$5.95 USD
48-1586
Replace a worn, damaged, or incorrect secondary main jet on compatible Honda CB Keihin carburetors with this aftermarket Keihin-type press-fit main jet in size...
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...
New
Honda CB350K CL350K carb rebuild kit

1970-73 Honda CB350K / CL350K Carb Rebuild Kit

$18.95 USD
48-1393
Rebuild your round-carb-bowl CB350 or CL350 with this Carb Rebuild Kit, designed for carbs with ROUND CARB BOWLS.Note: each kit rebuilds one carb, order...
New
Honda CB350 CL350K0 CL350K1 CL350K2 CL350K3 carburetor screw kit

Honda CB Carburetor Screw Kit

$17.57 USD
48-0795
Refresh your CB350 or CL350 / SL350 carb screws with this Carburetor Screw Kit. Enough for 2 carbs. Get a new set of screws...
Honda CB350K CB350G CL350K SL350 chrome carburetor top cover 16014-286-000

Honda CB350K / CB350G / CL350K / SL350 Chrome Carburetor Top Cover

$24.95 USD
13-0011
Aftermarket chrome carburetor top cover for the Honda 350 models listed below. It replaces a worn, damaged or missing original carburetor top cover.Product Details...
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...
Honda CB350 press fit primary main jet #60 99201-601-0600

1968-73 Honda CB350 Press Fit Primary Main Jet #60 ~ Replaces 99201-601-0600

$6.36 USD
48-1585
Restore clean carburetor fuel metering on your Honda CB350 with this aftermarket press-fit primary main jet, size #60, supplied with the sealing O-ring. It...
New
Honda CB700 CB650 CB550 fuel tank front rubber cushion 17611-KE8-000

Honda CB Genuine Honda 17611-KE8-000 Fuel Tank Front Rubber Cushion ~ Replaces 17611-KE8-000

$17.95 USD
99-5145
This genuine Honda front fuel tank rubber cushion mounts to the frame and supports the front of the gas tank on select classic Honda...
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Honda CB350 CL350K0 CL350K1 carb diaphragm rubber 16022-287-004

Honda CB Carb Diaphragm Rubber ~ Replaces 16022-287-004

$23.45 USD
48-1985
Replace your carburetor top diaphragm rubber with this Carburetor Top Diaphragm Rubber. Outer dimension 72mm, inner dimension 25mm. Replaces the diaphragm rubber on Honda...
Honda CB350 CB125 CB100 CB77 CB72 carb float 16013-286-014

Honda CB Carb Float ~ Replaces 16013-286-014

$22.95 USD
20-6500
Replace your carb float with this Carb Float with Pin, replacing OEM #16013-286-014. Fits the CB350F 1973, CB350K/CL350K/SL350, and the earliest classics including CB72/CB77...
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1972 Honda CB350K4 · Fuel System Buying guide

Follow the fuel path before choosing a repair kit

Tank sealing, fuel shutoff and carburetor service are separate purchases. Verify the hardware on your motorcycle, particularly where a replacement tank or earlier carburetors may have changed the original arrangement.

Parts to consider

Honda CB Fuel Petcock ~ Replaces 16950-292-000 M16 × 1.5 fuel petcockReplacement petcock with reference 16950-292-000. Verify the tank connection has the specified M16 × 1.5 thread.View part 1970-73 Honda CB350K / CL350K Carb Rebuild Kit Round-bowl carburetor rebuild kitOne kit services one round-bowl carburetor. Verify the fitted bowl style before ordering a pair of kits.View part Honda CB Carb Holder with Gasket ~ Replaces 16211-286-040 Carburetor holder and gasketOne holder and one gasket; references 16211-286-040 and 16229-369-000. Band clamps are a separate purchase.View part

Related parts: Chrome fuel cap · Carburetor float with pin · Replacement diaphragm rubber

Start with the tank connection

The replacement petcock lists M16 × 1.5 threads and reference 16950-292-000. A changed tank can alter that connection even when the frame is a K4. Check the thread, mounting clearance and hose route before ordering rather than relying only on the motorcycle’s year.

Scope the carburetor work before buying

The round-bowl kit services one carburetor; the holder package supplies one holder and one gasket. Inspect both sides before calculating quantities. For modified intake or exhaust systems, establish the actual carburetor specification instead of choosing jets solely from the collection filter.

Buying questions

How many rebuild kits should I order for both carburetors?

Two of the featured kits cover two carburetors, but only when the fitted units use the supported round-bowl application. Verify that detail before treating the K4 model tag as sufficient.

Can I fit pod filters without reviewing the jetting?

The available pods are custom 49 mm filters and may require jetting and tuning changes. Measure the carburetor inlets and evaluate the intake configuration before replacing the original filter arrangement.

Should the fuel cap seal be chosen by year alone?

Honda identifies cap packing 17534-323-300 for the K4, but a changed tank or cap may use another seal. Compare the fitted cap and replacement reference before ordering a separate rubber seal.

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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