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Chassis Number References

Listed below are modifications made to the cars and the approximate Chassis number of their introduction.

Date   MkVI/
Silver Dawn SWB Silver Wraith LWB Silver Wraith
November 1946 First MkVI produced B2AK      
February 1947 First SWB Silver Wraith produced     WTA1  
  5" dynamo B426CF   WZB1  
April 1948 First RR Silver Dawn produced   SBA2    
  Low lift camshaft B2DA      
  Lucas windscreen wiper motor B2DA   WDC1  
  3/8" cylinder head studs (previously 5/16") B95DZ   WDC31  
  LHF window winder B117DZ      
  Radiator heated demister B193DZ   WFC1  
  Dip and switch headlamps B193DZ   WDC38  
  Modified under-seat heater B193DZ   WDC100  
  Split skirt pistons B2EY   WDC1  
  Trico windscreen washer B1FU   WHD1  
August 1950 Later brake system introduced B1GT SCA1 WME1  
  Reduced speed fan B213GT LSCA9 WHD77  
  Large bore carburetters (SU) B83HP      
July 1951 4.5 litre engine (3 & 5/8" bore), full flow oil filter, 11" clutch B2MD LSFC2 WOF1  
  Twin exhaust (RHD cars) B2MD     ALW1
January 1952 First LWB Silver Wraith produced        
  Single choke Zenith carburetter     WSG7  
  Side scuttle vents B29MB SDB44    
June1952 First R Type Continental produced BC1A      
  Later type headlamp B169NY LSHD56    
  3 position heater & demister switches B311NY SFC94 WSG45  
  Rear window demister B311NY      
June 1952 First R Type produced B2RT      
August 1952 Last MkVI produced B301PU      
  Bigger boot B2RT SKE2    
  Two speed windscreen wiper B2RT   WVH1  
  6.75 compression ratio head B93TO SMF62    
  Flywheel inertia ring on cars with automatic gearbox B236WH     CLW24
November 1953 Last SWB Silver Wraith produced     WVH116  
  12/41 rear axle B1YA SRH2    
  Twin exhaust system   SRH2    
July 1954 3 & 3/4 " bore engine (R Type Continental) BC1D      
October 1954 4" longer bonnet       BLW39
February 1955 Last R Type produced B250ZY      
April 1955 Last Silver Dawn produced   SVJ133    
April 1955 Last R Type Continental produced BC9E      
October 1955 S Type engine used       ELW1
December 1956 8:1 compression ratio engine       FLW60
January 1958 Last LWB Silver Wraith produced       GLW26