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1974 Honda CB350F1 Exhaust Parts

The useful exhaust choices here support the original CB350F1 four-pipe arrangement: port gaskets, finned headpipe clamps and muffler connecting-tube hardware. Inspect what is actually fitted before ordering, since a replacement four-into-one system changes the relevant connections and mounting requirements.

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Honda CB750K CB350F muffler connecting tube set 18472-300-000

1969-76 Honda CB750K / CB350F Muffler Connecting Tube Set ~ Replaces 18472-300-000

$19.95 USD
73-0909
Replace your stock muffler connecting tube hardware with this Muffler Connecting Tube Set for the stock OEM exhaust system. Includes 1 tube, 1 band...
Honda CB550 CB500 CB400 CB350 CB100 chrome exhaust clamp 18231-323-000

Honda CB Chrome Exhaust Clamp ~ Replaces 18231-323-000

$24.95 USD
73-0090
Replace your exhaust clamp with this Chrome Exhaust Clamp, 14-fin type. Center-to-center mounting hole diameter 55mm. Replaces OEM #18231-323-000 / #18231-323-010 / #18231-333-010.Key Features•...
Honda CB400F CB350F exhaust headpipe gaskets (pk 10) 18291-028-000

1972-77 Honda CB400F / CB350F Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18291-028-000

$34.95 USD
17-3833
Stock up on exhaust port gaskets for your CB350F or CB400F Supersport with this 10-pack, replacing OEM #18291-028-000 / #18291-028-306.Key Features• Exhaust port gaskets,...
Honda CB400F CB350F exhaust gasket (each) 18291-028-000

1972-77 Honda CB400F / CB350F Exhaust Gasket (Each) ~ Replaces 18291-028-000

$4.13 USD
17-2833
Replace one exhaust port gasket on your CB350F or CB400F Supersport with this Exhaust Port Gasket, 1 piece, replacing OEM #18291-028-000 / #18291-028-306.Sold each,...
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1974 Honda CB350F1 · Exhaust Parts Buying guide

Order for the exhaust system on the bike

Honda’s F1 catalog shows four port gaskets and four flange joints. The connecting-tube set is a different stock-system service item, supplied as one tube, band clamp and screw.

Parts to consider

1972-77 Honda CB400F / CB350F Exhaust Gasket (Each) ~ Replaces 18291-028-000 Individual exhaust port gasketOne exhaust port gasket, replacing 18291-028-000 / 18291-028-306.View part Honda CB Chrome Exhaust Clamp ~ Replaces 18231-323-000 Chrome finned exhaust clamp14-fin clamp with mounting holes 55 mm center to center.View part 1969-76 Honda CB750K / CB350F Muffler Connecting Tube Set ~ Replaces 18472-300-000 Muffler connecting tube setOne tube, one band clamp and one screw. Two sets are specified for the original exhaust.View part

Separate cylinder-head sealing from rear connections

Each exhaust-port gasket services one port, with four specified for the original engine. The chrome 14-fin clamp has 55 mm hole-center spacing. Check the fitted flange hardware and headpipe arrangement instead of assuming every piece is included with a gasket purchase.

Count connecting-tube sets independently

Each connecting-tube package contains one tube, one band clamp and one screw. The product specifies two sets for the original exhaust. That quantity is separate from the four cylinder-head port gaskets and is not a promise that the set suits an aftermarket collector or muffler.

Ordering questions

How many port gaskets cover all four cylinders?

Honda specifies four exhaust-port gaskets, one for each port. The individual product supplies one, so order four when renewing all four headpipe joints.

Will these connecting tubes suit a four-into-one exhaust?

They are specified for the stock OEM exhaust system. Identify an aftermarket system’s own joint sizes and hardware before ordering; the original-system application is not proof of compatibility.

Does one connecting-tube set cover both specified positions?

No. One set contains one tube, band clamp and screw, while two sets are specified per bike for the original exhaust. Count the positions you are repairing.

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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