997CC & 998CC Cooper Cylinder Head
Label Part No Description Quantity Comments
1 28G222 Cylinder head 998cc (12G295 head casting) 1 N.L.A
1 28G193 Cylinder head 997cc (12G202 head casting) 1 N.L.A
2 CHS2515 Stud, water elbow outlet 3 See [LINK]C-STR281[/LINK] kit also
3 51K885 Stud, long, rockers and cover 2
4 51K1473 Stud, rocker posts, short 2
5 53K487 Stud, manifold 6 See [LINK]C-STR282[/LINK] kit also
6 53K402 Stud, heater valve 2 See [LINK]C-STR285[/LINK] kit also
7 12G1963 Valve guide, was 12A186 8
8 2K1345 Oil hole plug, was 6K808 1 C.W.E
9 2A180 Heater tap blanking plate 1
10 88G221 Heater take-off gasket 1
11 GFK3211 Heater valve nut 2
12 GFK1124 Washer 2
13 TAM2068 Valve seat insert exhaust, lead free 4 Was AEA763 leaded
13 TAM2152 Valve seat insert inlet, lead free 4 Was AEA762 leaded
14 12G296 Inlet valve, 998cc Cooper (uses 2A11 cotter) 4 1.218” (31mm)wide for large cotter
14 12G3034 Inlet valve (uses [LINK]88G459[/LINK] cotter) 4 N.L.A
14 AEA574 Inlet valve, 997cc Cooper (uses 2A11 cotter) 29.4mm(1.156”) wide 1 C.W.E
14 12G3036 Inlet valve, 997cc (uses [LINK]88G459[/LINK] cotter)29.4mm 4 1.156” (29.4mm) wide
14 AEA400 Exhaust valve (uses 2A11 cotter)1” wide 4
14 12A1987 Exhaust valve (uses [LINK]88G459[/LINK] cotter)1” wide 4 Was 12G3035
15 AEA311 Valve spring outer 8
16 AEA401 Valve spring inner, 998 Cooper only 8
17 2A879 Valve oil seal 8
18 88G616 Top cap for 2A11 large cotter groove 8
18 88G617 Top cap for [LINK]88G459[/LINK] small groove cotter 8 Alternative [LINK]AEA653[/LINK]
19 AEA403 Bottom spring collar, 998 Cooper 8 Use [LINK]C-AEA654[/LINK] alternative
20 2A11 Valve cotter pair for [LINK]88G616[/LINK] large collet groove 8 N.L.A
20 88G459 Valve cotter (only for [LINK]88G617[/LINK]) 16 8 pair
21 2A12 Circlip for valve cotters 8 N.L.A
22 12A1950 Rocker shaft 1
23 12G1926 Rocker shaft post with oil feed 3
24 12G1927 Rocker shaft post - tapped 1
25 2A259 Rocker post locking plate N.L.A 1 Use [LINK]2A515[/LINK] and modify
26 2A258 Locating plate plug 1
27 6K556 Rocker spacer spring 3
28 2A964 Rocker pressed steel 8 Use [LINK]12G1221[/LINK] alternative
29 12G1221 Rocker forged 8
30 2A21 Rocker bush 8
31 AEG167 Adjusting screw for [LINK]12G1221[/LINK] 8
31 12A1215 Adjusting screw for [LINK]2A964[/LINK] 8
32 NT605061 Adjusting screw nut for [LINK]12G1221[/LINK] 8 1/2”AF spanner size
32 6K654 Adjusting screw nut for [LINK]2A964[/LINK] 8 7/16”AF spanner size
33 51K1193 Cylinder head nut 9
34 GFK1115 Cylinder head washer 9
35 GUG702506HG Cylinder head gasket, was TAM2121B and AJM302 1
35 C-AEA647 Cylinder head gasket, composite material for performance 1 For gasket sets see page 28
35 GEG302 Cylinder Head gasket, copper 1 For gasket sets see page 28
36 MSSK061 Cylinder head ancillary stud and nut kit 1
37 2A18 Rocker shaft spring washer 2