Front main seal Ducati alternator, update for Bosch GU90402840

  • Part Number: 90402840
  • Manufactured by: Moto Guzzi
MG Cycle 5.65
$5.65

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Directional wave form front main seal for models with Ducati alternator, many models mid 1990s to 2008. This seal is a better update for, and supersedes 90402839 or GU90402839, which were used on Bosch alternator equipped models. Also superseding 90402838 or GU90042838 as used on the Convert and California II Automatic's tranmission input shafts.  

Listed as original part number for some Mille GT, SP II, some 1000S, some California III, SP III, Daytona 1000, Quota 1000, 1100 Sport carb and injected, Strada, V65 C, V65 SP, V65 TT, Lario, 750 Breva, 750 Nevada, Centauro, Daytona RS, Califonia 1100, EV, Jackal, Bassa, California Special, Special Sport, California Stone, Stone Touring, Quota ES, V11 Sport, V11 LeMans, V11 Cafe, Ballabio, Tenni, Scura, Aluminum, Titanium, California Vintage, EV Touring.

This seal updates the early version front seal 90402839 used on V7 Sport, 750S, S3, 850T, T3, T4, T5, Convert, G5, 850 LeMans, LeMans II, CX100, LeMans III, LeMans 1000 all years LeMans IV and LeMans V, California II, some California III, Mille and 1000S.

It also replaces 90402838 transmission gearbox input seal on Convert and California II Automatic, which seals the input shaft.

Also used in Daytona and Centauro for cam blank through front cover.

 

 

Directional wave form front main seal for models with Ducati alternator, many models mid 1990s to 2008. This seal is a better update for, and supersedes 90402839 or GU90402839, which were used on Bosch alternator equipped models. Also superseding 90402838 or GU90042838 as used on the Convert and California II Automatic's tranmission input shafts.   Listed as original part number for some Mille GT, SP II, some 1000S, some California III, SP III, Daytona 1000, Quota 1000, 1100 Sport carb and injected, Strada, V65 C, V65 SP, V65 TT, Lario, 750 Breva, 750 Nevada, Centauro, Daytona RS, Califonia 1100, EV, Jackal, Bassa, California Special, Special Sport, California Stone, Stone Touring, Quota ES, V11 Sport, V11 LeMans, V11 Cafe, Ballabio, Tenni, Scura, Aluminum, Titanium, California Vintage, EV Touring. This seal updates the early version front seal 90402839 used on V7 Sport, 750S, S3, 850T, T3, T4, T5, Convert, G5, 850 LeMans, LeMans II, CX100, LeMans III, LeMans 1000 all years LeMans IV and LeMans V, California II, some California III, Mille and 1000S.It also replaces 90402838 transmission gearbox input seal on Convert and California II Automatic, which seals the input shaft. Also used in Daytona and Centauro for cam blank through front cover.  

This same part number may also be presented in these alternate formats

  • 90402840
  • 9040 2840
  • 9040.2840
  • 90 40 28 40
  • 90.40.28.40
  • GU90402840

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