I am sure that someone else has done this before, but here is my list of of every seal, gasket, and oring which is listed in the parts books. It is for a 1974 CB550, but I am sure it applies to other years.
I would like to be able to make notes in the list about which parts come in the athena/vesrah kits. This data provided in post #20 and combined into the list below
Required Service Honda In Vesrah Top/Bottom Aftermarket Replacement
Transmission
1 91202-426-003 OIL SEAL (12X25X4.5) gearshift drum seal $3.21
1 91202-KFL-841 OIL SEAL (13.8X24X) gearshift seal $3.20
1 91205-283-015 OIL SEAL (33X57X7) countershaft (output sprocket seal) $6.43
1 91207-374-000 OIL SEAL (34X8) seal plug (discontinued) $7.90
1 91306-703-000 O-RING (24.5X1.5) internal oring on countershaft (disc'd) $1.96
Cylinder @ Head
1 91256-096-651 OIL SEAL (4.8X14.5) tach seal $3.08
6 91318-300-013 RUBBER, SEALING head nut seal $16.68
8 91301-200-000 O-RING (10X1.6) valve guide oring $15.44 x
2 91301-426-010 O-RING (4.9X2.5) head dowel oring $2.56 x
8 91302-001-020 O-RING (30.8MM) tappet oring $17.92 x
4 91302-001-020 O-RING (30.8MM) intake manifold oring $8.96 x
4 91304-286-000 O-RING (61.8X2.0) cylinder sleeve oring $21.52 x
2 91310-426-000 O-RING (11X2.5) cylinder to case dowel oring $6.00 x
1 91310-426-000 O-RING (11X2.5) tach oring $3.00 x
4 91319-323-000 O-RING (6X3) rocker shaft cover oring $6.12 x
1 12191-426-306 GASKET, CYLINDER cylinder to case gasket $12.60 x
1 12251-374-306 GASKET, CYL HD head gasket $57.32 x
1 12329-323-000 GASKET, BTHR CVR breather cover gasket $6.99 x
1 12391-323-000 GASKET, CYL HD CVR rocker cover gasket $30.56 x
4 18291-390-306 GASKET, EX. PIPE exhaust pipe gasket $17.48 x
Crankcase @ Oil Filter
1 91301-MY9-003 O-RING (15X2.5) oil filter bolt oring $0.85
1 91316-425-003 O-RING (89X4.5) oil filter housing oring $2.57
1 91319-300-000 O-RING (13X2.5) oil passage plug oring $3.22
3 94608-40000 O-RING (19.4X2.8 ) oil passage plug oring $2.10
1 11398-426-000 GASKET, OIL PAN oil pan gasket (aka oil pump gasket?) $6.06
Clutch @ Crankcase
1 91204-286-003 OIL SEAL (18X29X7) kick start seal? $2.57
1 91259-VM0-000 OIL SEAL (10X16X4.5) outer clutch lever seal $1.80
1 91301-704-000 O-RING (6MM) inner clutch lever oring $1.62
1 91354-371-000 O-RING (23X2) dipstick oring $1.85
1 11394-390-306 GASKET, R. CRANKCASE clutch cover gasket (disc'd) $8.96 x
1 30372-300-300 GASKET, POINT COVER point cover gasket $5.89 x
Camshaft @ Crankshaft
8 12209-333-005 SEAL, VALVE STEM valve stem seal $47.52 x
1 91201-300-003 OIL SEAL (30X42X8 ) crank shaft oil seal, rotor side $7.24
1 91201-323-005 OIL SEAL (30X45X8 ) crank shaft oil seal, points side $8.34
1 91305-323-000 O-RING (5.8X1.9) cam chain tensioner o-ring $1.76 x
Alternator @ Oil pump
2 15155-323-000 COLLAR, O-RING oil pump collar (discontinued) $1.82
2 31206-402-008 O-RING (60X1.4) oring in starter $8.16
2 91301-268-020 O-RING (13.6X2.4) oil pump collar oring $3.36
1 91302-250-010 O-RING (47X3.2) oil pump to case oring $4.20
1 91312-MG7-003 O-RING (24.4X3.1) starter to case oring $3.51
1 94608-40000 O-RING (19.4X2.8 ) oil passage cap on pump oring $0.70
1 11691-323-306 GASKET alternator cover gasket (aka dyno gasket?) $7.19 x
1 31282-323-300 GASKET, START MTR CVR starter motor cover (disc'd) x
Oil Pump Internal
1 91305-426-003 O-RING (46x2) oil pump cover $4.13
2 91302-377-000 O-RING (15x2.5) suction and feed $6.82
Carburetor
4 16010-323-305 GASKET SET gasket kit, 1 per carb $48.68
Fuel Tank
1 16950-393-015 PETCOCK ASSY. petcock assembly $41.43
1 16952-388-015 SCREEN SET $21.25
1 17534-323-300 GASKET filler cap
Wheel
1 DUST SEAL (22X36X8) 91252-300-003 Front wheel dust seal 6.01 AllBalls 30-3601
1 Front wheel seal #2 AllBalls 30-5009
1 OIL SEAL (34X55X9) 90753-283-000 Rear wheel dust seal 8.97 AllBalls 30-5502
Required
Camshaft @ Crankshaft
8 Multiples Connecting Rod Bearings
10 Multiples Crank Bearings
Front Wheel @ Rear Wheel
2 96140-63020 Front Wheel Bearing 6302U AllBalls 6302-2RS
1 96140-63040-10 Rear Wheel Bearing #1 6304U AllBalls 6304-2RD-QE6
1 96140-63050-10 Rear Wheel Bearing #2 6305U AllBalls 6305-2RD-QE6
Transmission @ Kickstart
1 23931-323-004 Main shaft gear needle bearing (disconitued)
1 25100-374-003 Oil pump bearing (discontinued)
1 91002-KY4-901 Primary shaft left side bearing 63/22
1 91002-283-000 Countershaft bearing 5205
1 91002-286-008 Mainshaft bearing 5205HS (disconitnued)
1 91007-323-000 Gear needle bearing (disconitued)
1 91008-374-003 Shift drum bearing 16005
1 91022-374-003
1 96100-62050-00 Primary Shaft right side bearing (6205)