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2003 Honda CB900F 919 Exhaust Sealing

The exhaust gasket choices for a 2003 919 differ by package quantity. Check the port-seal application and the connections being opened, then choose individual gaskets or the ten-pack. A larger package is a supply option, not the motorcycle’s required gasket count.

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Honda CB900 CB650 CB550 exhaust headpipe gasket (each) 18212-634-000

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18212-634-000

$3.58 USD
17-2813
1978 Honda CB400A Motorcycle Parts 1978 Honda CB400TI Motorcycle Parts 1978 Honda CB400TII Motorcycle Parts 1979 Honda CB400TIIZ Motorcycle Parts 1979 Honda CB400TIZ Motorcycle Parts 1979 Honda CB650 Motorcycle Parts 1980 Honda CB400TA Motorcycle Parts 1980 Honda CB650 Motorcycle Parts 1980 Honda CB650C Custom Motorcycle Parts 1981 Honda CB400TB Motorcycle Parts 1981 Honda CB650 Motorcycle Parts 1981 Honda CB650C Custom Motorcycle Parts 1982 Honda CB450SC Nighthawk Motorcycle Parts 1982 Honda CB450T Hawk Motorcycle Parts 1982 Honda CB650 Motorcycle Parts 1982 Honda CB650SC Nighthawk Motorcycle Parts 1983 Honda CB450SC Nighthawk Motorcycle Parts 1983 Honda CB550SC Nighthawk Motorcycle Parts 1983 Honda CB650SC Nighthawk Motorcycle Parts 1984 Honda CB650SC Nighthawk Motorcycle Parts 1985 Honda CB450SC Nighthawk Motorcycle Parts 1985 Honda CB650SC Nighthawk Motorcycle Parts 1986 Honda CB450SC Nighthawk Motorcycle Parts 2002 Honda CB900F 919 Motorcycle Parts 2003 Honda CB900F 919 Motorcycle Parts 2004 Honda CB900F 919 Motorcycle Parts 2005 Honda CB900F 919 Motorcycle Parts 2006 Honda CB900F 919 Motorcycle Parts 2007 Honda CB900F 919 Motorcycle Parts Honda CB Exhaust Gaskets & Mounting Hardware Honda CB Exhaust Systems, Mufflers & Hardware Honda CB400 Motorcycle Parts by Model & Year Honda CB400T Hawk Motorcycle Parts (1978–1981) Honda CB450 Motorcycle Parts by Model & Year Honda CB450SC Nighthawk Motorcycle Parts (1982–1986) Honda CB550 Motorcycle Parts by Model & Year Honda CB550SC Nighthawk Motorcycle Parts (1983–1984) Honda CB650 Motorcycle Parts (1979–1982) Honda CB650 Motorcycle Parts by Model & Year Honda CB650C Custom Motorcycle Parts (1980–1981) Honda CB650SC Nighthawk Motorcycle Parts (1982–1985) Honda CB900 Motorcycle Parts by Model & Year Honda CB900F 919 Motorcycle Parts (2002–2007) Series 4: CB900-1100 (80-83) Series 5: CB650 (79-82) Series 6: CB500-CB550 (71-78) Series 7: CB400-CB450 (65-86)
Replace one exhaust port gasket on your CB650, CB400, CB450, or modern CB900F with this Exhaust Port Gasket, 1 piece, replacing OEM #18212-634-000 /...
Honda CB900 CB650 CB550 exhaust headpipe gaskets (pk 10) 18212-634-000

Honda CB Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18212-634-000

$27.95 USD
17-3813
1978 Honda CB400A Motorcycle Parts 1978 Honda CB400TI Motorcycle Parts 1978 Honda CB400TII Motorcycle Parts 1979 Honda CB400TIIZ Motorcycle Parts 1979 Honda CB400TIZ Motorcycle Parts 1979 Honda CB650 Motorcycle Parts 1980 Honda CB400TA Motorcycle Parts 1980 Honda CB650 Motorcycle Parts 1980 Honda CB650C Custom Motorcycle Parts 1981 Honda CB400TB Motorcycle Parts 1981 Honda CB650 Motorcycle Parts 1981 Honda CB650C Custom Motorcycle Parts 1982 Honda CB450SC Nighthawk Motorcycle Parts 1982 Honda CB450T Hawk Motorcycle Parts 1982 Honda CB650 Motorcycle Parts 1982 Honda CB650SC Nighthawk Motorcycle Parts 1983 Honda CB450SC Nighthawk Motorcycle Parts 1983 Honda CB550SC Nighthawk Motorcycle Parts 1983 Honda CB650SC Nighthawk Motorcycle Parts 1984 Honda CB650SC Nighthawk Motorcycle Parts 1985 Honda CB450SC Nighthawk Motorcycle Parts 1985 Honda CB650SC Nighthawk Motorcycle Parts 1986 Honda CB450SC Nighthawk Motorcycle Parts 2002 Honda CB900F 919 Motorcycle Parts 2003 Honda CB900F 919 Motorcycle Parts 2004 Honda CB900F 919 Motorcycle Parts 2005 Honda CB900F 919 Motorcycle Parts 2006 Honda CB900F 919 Motorcycle Parts 2007 Honda CB900F 919 Motorcycle Parts Honda CB Exhaust Gaskets & Mounting Hardware Honda CB Exhaust Systems, Mufflers & Hardware Honda CB400 Motorcycle Parts by Model & Year Honda CB400T Hawk Motorcycle Parts (1978–1981) Honda CB450 Motorcycle Parts by Model & Year Honda CB450SC Nighthawk Motorcycle Parts (1982–1986) Honda CB550 Motorcycle Parts by Model & Year Honda CB550SC Nighthawk Motorcycle Parts (1983–1984) Honda CB650 Motorcycle Parts (1979–1982) Honda CB650 Motorcycle Parts by Model & Year Honda CB650C Custom Motorcycle Parts (1980–1981) Honda CB650SC Nighthawk Motorcycle Parts (1982–1985) Honda CB900 Motorcycle Parts by Model & Year Honda CB900F 919 Motorcycle Parts (2002–2007) Series 4: CB900-1100 (80-83) Series 5: CB650 (79-82) Series 6: CB500-CB550 (71-78) Series 7: CB400-CB450 (65-86)
Stock up on exhaust port gaskets for your CB650, CB400, CB450, or modern CB900F with this 10-pack, replacing OEM #18212-634-000 / #18291-236-000 / #18291-MN4-920.Key...
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2003 Honda CB900F 919 · Exhaust Sealing Buying guide

Locate the leaking joint before choosing a gasket

The original 2003 exhaust uses four 18291-MN4-920 gaskets at the cylinder-head ports. The offered single and ten-pack replace that reference; the muffler and rear exhaust joints use separate packing parts.

Parts to consider

Honda CB Exhaust Headpipe Gaskets ~ (Pk/10) ~ Replaces 18212-634-000 Ten-pack exhaust-port gasketsTen port gaskets with the same listed application as the single; other exhaust-joint packings are separate.View part Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18212-634-000 Individual exhaust-port gasketOne gasket; includes replacement reference 18291-MN4-920. Four original cylinder-head port positions.View part

Four original ports, two buying quantities

The individual listing supplies one port gasket and the bulk listing supplies ten of the same listed application. Four singles cover all four original cylinder-head port positions. The ten-pack is a stock quantity, not a complete exhaust overhaul kit.

Downstream joints have different seals

Honda lists the muffler joint packing and rear exhaust-pipe joint packing separately from the four cylinder-head gaskets. Identify the joint being opened and inspect its mating parts before ordering; a port gasket is not a universal seal for every exhaust connection.

Practical questions

How many singles are needed when all four headpipe port seals are replaced?

Four for the original exhaust: one at each cylinder-head port. Order by the joints being renewed, and confirm any changed header's requirements before relying on the original arrangement.

Do I need these gaskets for a muffler-only joint leak?

First identify the leaking connection. The original muffler and rear pipe joints use different packing parts; these port gaskets seal where the headpipes meet the cylinder head.

Does the ten-pack contain every gasket needed for an exhaust rebuild?

No. It contains ten port gaskets, not an assortment of joint packings or mounting hardware. Add the correct separate parts for the other joints being disturbed.

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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