Block Components & Pistons
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LabelPart NamePart No.
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1Block and Std pistons 850cc28G196
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3Core plug (1.625” diameter)2K8169
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3Core plug (1.326” diameter)AEC876
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3Core plug (1.647” diameter)AEH592
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4Oil gallery plug12G3503
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5Oil release passage2K1345
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6Block to head stud shortCAM151
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6Block to head stud shortTAM1617
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7Block to head stud longCAM150
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8Filter to block boltCHS2613
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9Petrol pump studCHS2515
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10Dowel - main bearing cap2A54
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10Dowel - main bearing cap12G1268
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12Mains bolt12G1398
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13Mains stud set (6 studs)AEG323
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14Mains nut set (6 nuts)C-AJJ4013
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15Liner (SU3367)12G164
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15Liner (was AEG239) SU3598AEG428
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17Drain plug53K2853
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18Drain plug washer6K638
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20Petrol pump blanking plate, (uses GUG705779GM gasket)2A265
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2122H983
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22Main bearing lock tab except Cooper ‘S’/1300cc6K927
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23998cc Piston set 4 ringP20773-00
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23P20950-20
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23998cc Flat top piston 10.3 to 1 CR - standard +20/40/60 sizesADU3490-00
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231275cc Piston set 9.4 to 1 CR TURBOP22357-40
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231275cc Piston 8.8 to 1 CRP21251-00
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231275cc Piston 9.7 to 1 CRP21253-00
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23Piston 73.5 Powermax 9cc dishP20659-00
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23Piston 73.5 Mar Motorsport 9cc dish (Mini Spares own)C-STR311

See next page for piston rings and ring sizes