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See Triumph Catalogue listing in Triumph Information tab below

Part No:
503662

NOT AVAILABLE This part is no longer available

Cylinder head bare, TR3 le Mans type fitted intermittently from engine number TS9350-E to TS13051-E. Not available new, consider second hand part 503662SH or new TR4A part 514748.

There were 3 types of cylinder head fritted to TR3 cars, only interchangeable in sets as follows: -
 

Original TR3

             Combustion Head part number     501209
             Inlet manifold                                 302118
             Manifold gasket                             106937
Fitted from engine TS8471-E to TS9349-E
 

le Mans type Head TR3

             Combustion Head part number     503662
             Inlet manifold                                 302006
             Manifold gasket                             113168
Fitted from engine TS9350-E to TS12605-E, TS12607-E to TS13023-E, TS13029-E, TS13032-E to TS13023-E, TS13029-E, TS13032-E to TS13036-E, TS13044-E to TS13051-E, only

High Port Head TR3

             Combustion Head part number     503663
             Inlet manifold                                 302119
             Manifold gasket                             113122
This high port head was standardized on TS12606-E, TS13024-E to TS13028-E, TS13030-E to TS13031-E, TS13037-E to TS13043-E, and TS13052-E onwards,  
 
All cars with engines prior to TS9349 wereTR2 

No catalogue plates are available