Cylinder head identification numbers
Label Part No Description Quantity Comments
1 12G123 Connecting rod number 2 and 4 2 N.L.A
1 12G126 Connecting rod number 1 and 3 2 N.L.A
2 2A660 Locktab 4
3 C-STR319 High-grade Big end bolt kit 1
3 12G2217 Big end bolt 8
4 8G2733 Crankshaft (forging number 12A595) (12A1451) 1 N.L.A - 998cc and Cooper
4 8G2732 Crankshaft (forging number 12G82) 1100cc 1 N.L.A
5 6K836 Crankshaft key 1
6 VP572-00 Con rod bearings (Mahle) 1 Std/10/20 only. Mahle was Vandervell
6 AEB572-00 Con rod bearings ACL Bearing 1 Std/10/20/30/40 oversize
6 VC1017-00 Con rod bearings Mahle race 1 Std/10
7 VP733-00 Mains bearings (Mahle) 1 Std/10/20 only. Mahle was Vandervell
7 AEM3314-00 Mains bearings ACL Bearings 1 Std/10/20/30/40 oversize
7 VM1018-00 Mains bearings Mahle race 1 Std/10
8 AEW2122-00 Thrust washer set 1 Std/3 thou oversize
9 22A1493 Primary gear (24 teeth) 1
10 DAM8887 Bush front was 22G401 1
11 22G109 Bush rear 1
12 22A321 Thrust washer 2.79-2.84mm (.110-112”) - N.L.A 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [link]22A319[/link] and [link]88G549[/link] for wear.
12 22A322 Thrust washer 2.84-2.89mm (.112-114”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [link]22A319[/link] and [link]88G549[/link] for wear.
12 22A323 Thrust washer 2.89-2.94mm (.114-116”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [link]22A319[/link] and [link]88G549[/link] for wear.
12 22A324 Thrust washer 2.94-2.99mm (.116-118”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [link]22A319[/link] and [link]88G549[/link] for wear.
12 22A450 Thrust washer 2.99-3.04mm (.118-120”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [link]22A319[/link] and [link]88G549[/link] for wear.
12 22A451 Thrust washer 3.04-3.09mm (.120-122”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [link]22A319[/link] and [link]88G549[/link] for wear.
13 22A319 U Clip thrust 1
14 88G549 Backing ring 1
15 AEA630 Camshaft 1100cc and 998 Cooper 1 1/2” wide lobe was 12G165 C.W.E
15 8G712 Camshaft 998cc 1 N.L.A
16 2A299 Camshaft oil pump drive 1 N.L.A (Fitted in camshaft new)
17 WKN505 Camshaft key pin 1
18 AHU2379 Camshaft plate 1
19 GFK5179 Locating plate bolt 3 1/4”UNF 3/4”long
20 GHF321 Locating bolt shake proof washer 3
21 2A85 Camshaft gear with tensioners 1 N.L.A use [link]12G4337[/link]
22 8G549 Tensioner rubber rings 2
23 12G4337 Camshaft gear, fitted originally without tensioner 1
24 12G2621 Tensioner, fits [link]12G2626[/link] front plate only 1 From engine number 99H791, 10H791 Not 998 Cooper
25 12G2628 Tensioner mounting plate 1
26 12G2629 Pivot pin 1
27 2A759 Camshaft locktab 1
28 6K629 Camshaft nut 1
29 8G725 Crankshaft gear 1
30 6K628 Washer to shim crank gear 1
31 3H2127 Timing chain (Simplex) 1
32 2A970 Front plate - pre tensioner type 1 N.L.A
32 12G2626 Front plate - used with tensioner pads 1
33 12G619B Gasket for [link]2A970[/link] front plate 1 For gasket sets see page 28
34 12G4499 Distributor drive spindle 1 C.W.E
35 13H2792 “O” ring distributor housing 1
36 12A1136 Housing 1 N.L.A
37 2A14 Push rod 8 See [link]C-AEG581[/link] alternative
38 2A13 Cam follower 8 Alternative to [link]AEG584[/link]
38 AEG584 Cam follower with oil hole 8 Alternative to [link]2A13[/link]
Number Inlet Exhaust CC Normal Application
2A628   1.0625”   1.000”   24.5cc   848, 998 Mini and 948 Sprite  
12A1456   1.0625”   1.000”   24.5cc   848, 998 Mini and 948 Sprite 
CAM4810   1.0625”   1.000”   25.5cc   998 Mini A plus and lead free  
2A629   1.0625”   1.000”   24.5cc   948, A35 and Minor 
12G202   1.156”   1.000”   26.1cc   997 Cooper, 1100 MKI  
12G206   1.218”   1.000”   28.3cc   998 Cooper, MG1100 
12G295   1.218”   1.000”   28.3cc   998 Cooper, MG1100  
12A185   1.401”   1.218”   21.4cc   MKI Cooper ‘S’ 
AEG626   ------   ------   ------   1071 formula junior, very rare  
AEG163   1.401”   1.218”   21.4cc   MKI and 2 Cooper ‘S’ 
12G940   1.3125”   1.156”   21.4cc   1300, 1275GT & all late A+ variants inc Turbo  
12G1805   1.401”   1.156”   21.4cc   MG1300, 1300GT, Cooper ‘S’ MK3 
12G940   1.401”   1.156”   20 - 21.4cc   A Plus MG Metro / Vanden Plas HC  
LDF105800  1.3125”   1.156”   21.4cc   Multipoint injection 
CC = Original Combustion Chamber Size