This SKU covers the following 20-inch Intel iMac models:

EMC 2105 20 inch iMac, 128MB VRAM (Early 2006, White): MA200LL ; 2.0 GHz Core Duo (T2500) ; A1174 ; EMC 2105 ; iMac4,1 .
EEE Code: UP5, UP6, VJA, VJB, WDM, WDN, WDQ, WDR .
661-3880 ; 820-1888

EMC 2105 20 inch iMac, 256MB VRAM (Early 2006, White): MA200LL ; 2.0 GHz Core Duo (T2500) ; A1174 ; EMC 2105 ; iMac4,1 .
EEE Code: US4, US5, UX2, V1S, V1U, VJC, WDP, WDS .
661-3894 .

EMC 2118 20 inch iMac, 128MB VRAM (Late 2006, White): MA589LL ; 2.16 GHz Core 2 Duo (T7400) ; A1207 ; EMC 2118; iMac5,1 .
EEE Code: VRG, VVA, WZF, WZH .
661-4108 (discontinued, replaced by and interchangeable with 661-4294) ; 630-7880 ; 820-2301 .

EMC 2118 20 inch iMac, 128MB VRAM (Late 2006, White): MA589LL ; 2.16 GHz Core 2 Duo (T7400) ; A1207 ; EMC 2118; iMac5,1 EEE Code: XYD, XYE .
661-4294 (replaced, and is interchangeable with, 661-4108) ; 630-7880 ; 820-2301 .

EMC 2118 20 inch iMac, 128MB VRAM (Late 2006, White): MA589LL/CTO ; 2.33 GHz Core 2 Duo (T7600) ; A1207 ; EMC 2118; iMac5,1 .
EEE Code: W51, W53, WZK, WZM .
661-4109 (discontinued, replaced by and interchangeable with 661-4295) .

EMC 2118 20 inch iMac, 128MB VRAM (Late 2006, White): MA589LL/CTO ; 2.33 GHz Core 2 Duo (T76400) ; A1207 ; EMC 2118; iMac5,1 .
EEE Code: XYH, XYJ .
661-4295 (replaced, and is interchangeable with, 661-4109) .

EMC 2118 20 inch iMac, 256MB VRAM (Late 2006, White): MA589LL ; 2.16 GHz Core 2 Duo (T7400) ; A1207 ; EMC 2118; iMac5,1 .
EEE Code: VV9, VVB, WZG, WZJ .
661-4110 (discontinued, replaced by and interchangeable with 661-4296) .

EMC 2118 20 inch iMac, 256MB VRAM (Late 2006, White): MA589LL ; 2.16 GHz Core 2 Duo (T7400) ; A1207 ; EMC 2118; iMac5,1v EEE Code: XYF, XYG .
661-4296 (replaced, and is interchangeable with, 661-4110) .

EMC 2118 20 inch iMac, 256MB VRAM (Late 2006, White): MA589LL/CTO ; 2.33 GHz Core 2 Duo (T7600) ; A1207 ; EMC 2118; iMac5,1 .
EEE Code: W52, W54, WZL, WZN .
661-4111 (discontinued, replaced by and interchangeable with 661-4297) .

EMC 2118 20 inch iMac, 256MB VRAM (Late 2006, White): MA589LL/CTO ; 2.33 GHz Core 2 Duo (T7600) ; A1207 ; EMC 2118; iMac5,1 .
EEE Code: XZM, XZN .
661-4297 (replaced, and is interchangeable with, 661-4111) .

EMC 2133 20 inch iMac (Mid 2007, Aluminum): MA876LL ; 2.0 GHz (T7300) Core 2 Duo ; A1224 ; EMC 2133; iMac7,1 .
EEE Code: 12A, 0J0, WXX .
661-4437 .

EMC 2133 20 inch iMac (Mid 2007, Aluminum): MA877LL ; 2.4 GHz (T7700) Core 2 Duo ; A1224 ; EMC 2133; iMac7,1 .
EEE Code: 12B, XBC, ZQR .
661-4439 ; 820-2143-A .

EMC 2210 20 inch iMac (Early 2008, Aluminum): MB323LL/A ; 2.4 GHz (E8135) Core 2 Duo ; A1224 ; EMC 2210; iMac8,1 .
EEE Code: YHZ .
661-4674 .

EMC 2210 20 inch iMac (Early 2008, Aluminum): MB324LL/A ; 2.66 GHz (E8835) Core 2 Duo ; A1224 ; EMC 2210; iMac8,1 .
EEE Code: ZUL .
661-4675 .

EMC 2266 20 inch iMac (Early 2009, Aluminum): MB417LL/A ; 2.66 GHz (E8135) Core 2 Duo ; A1224 ; EMC 2266; iMac9,1 EEE Code: 7Y0, 7Y1 .
661-4984 (discontinued, replaced by and interchangeable with 661-5136) .

EMC 2266 20 inch iMac (Early 2009, Aluminum): MB417LL/A ; 2.66 GHz (E8135) Core 2 Duo ; A1224 ; EMC 2266; iMac9,1 .
EEE Code: 29X .
661-5136 (replaced, and is interchangeable with, 661-4984) .

EMC 2266 20 inch iMac (Mid 2009, Aluminum): MC015LL/A ; 2.0 GHz (P7350) Core 2 Duo ; A1224 ; EMC 2266; iMac9,1 .
EEE Code: 6KB .
661-5193 .

Note: While GALAXY specializes in iMac component level repair we also offer replacement service parts for "self-install". You will find a list of popularly requested items here -> iMac Service Parts