154101-0020 ZEXEL 9 421 610 624 BOSCH FLYWEIGHT ASSEMBLY 9421610624 1541010020 1157220170

Table 1
Features Benefits
All engineering changes and updates included Improved reliability and performance
Worldwide availability through the Cat® Parts Distribution System Customer access regardless of location
Off the shelf reliability Downtime reduced through exchanged product
Same as new Caterpillar warranty Consistent support
Illustration 1 g06211468
(1) Rocker arm with MEUI-C hardware
(2) Rocker arm with MEUI-A hardwareNote: The 192-4151 Button is being replaced with the 258-8721 Button on MEUI-A injector rocker arms. Either button can be used for both types of injectors.
Table 2
MEUI-C Rocker MEUI-A Rocker
258-8721 Button 192-4151 Button
274-4492 Arm Adjustment Screw 196-5069 Arm Adjustment Screw
8L-2777 O-Ring Seal 061-8639 O-Ring Seal
Table 3
Reman Part Number New Part Number Machine Serial Number Prefixes
20R-3319 437-3881 221, 530, 819, 880, 986, 1DL, 1XJ, 24W, 25W, 26W, 27W, 2TW, 2YD, 3F6, 3KR, 3SK, 45P, 4SK, 5TJ, 5TW, 6AB, 6PR, 6YF, 6XJ, 6YZ, 7MZ, 86Z, 87X, 87Z, 9TC, A4G, A9P, AKA, AMA, ANS, APF, ARW, ASW, AWW, AYT, AZW, B1N, BCC, BKX, BLY, BRL, BTW, BTX, BXD, BXY, BYP, CMX, DBB, DBC, DHF, DHJ, DHT, DHX, DJK, DLS, DLW, DN6, DNM, DNR, DNW, DR3, DS3, DS9, DW9, E4S, EDA, EED, EXD, EYG, FCT, FDL, FEN, FKD, GEB, GT7, GXR, H25, H4C, H8M, H9K, HJD, HS2, JCM, JET, JJW, JLK, JMS, JNS, JNW, JRP, JXP, KBC, KCZ, KDH, KDP, KGB, KK2, KK3, KLK, KLS, KNW, KPZ, KSD, KZL, L4F, LFJ, LFK, LFN, LTX, LWY, MB8, MBE, MCY, MDG, MFL, MKP, MWH, MYA, NEL, NNW, P4J, P4L, PAR, PAX, PJA, PT7, RAB, RCD, RCY, RFM, RLB, RM2, RM3, RMA, RME, RWB, SEE, SET, T2F, T4P, T4S, T4Y, T5S, T5W, TFJ, TNM, TWA, TWG, TYE, W1B, W1F, WBT, WSN, WT6, WTW, WTX, WWC, WWD, Z4D, Z4Z, ZAC, ZMX
20R-3322 437-3862 232, 233, 234, 818, 1AB, 1FB, 1NB, 1JB, 2GB, 2KR, 2PS, 2SR, 2XW, 3ND, 47M, 5EW, 5YR, 6BK, 6GZ, 6TB, 6TR, 71W, 7CG, 7KR, 7XM, 85X, 86X, 8PS, 90Z, A7A, A8J, ALP, ANW, AP4, ASX, AT2, AW4, AWF, AWH, AWR, AXB, AXF, AXG, AXM, AYH, AZZ, B1P, B1R, B93, B9K, BBB, BDS, BKF, BNH, BPC, BWX, BZZ, CB2, CEN, CES, CEX, CLD, CLS, CXM, CXR, DBD, DFA, DFJ, DHB, DHD, DHG, DHL, DP4, DPE, DT8, DWJ, DXB, DXE, DXG, DXR, E4R, EAM, EBF, ECM, ECX, ELC, FAT, FH9, FMC, GAY, GER, GLH, GLK, GWC, GXM, H27, HSM, J2M, J8B, JKC, JR8, KEX, KJW, KKJ, KKK, L4D, L4E, L8S, LH9, LTS, LWA, LWX, LWZ, M1M, M3P, M3W, M4E, MB9, MCS, MEM, MEX, MH8, MHG, MLN, MMA, MNZ, MSE, MSF, N64, NFJ, NLK, P1C, P1M, PAP, PAS, PF8, PNM, RCM, RJG, RJS, SBE, SJY, T2E, T4R, TAS, TEC, TLB, TPB, TWZ, W1C, W1E, WAG, WAP, WAW, WTK, XP8, Z4X, Z9K
Table 4
Reman Part Number New Part Number Engine Serial Number Prefixes
20R-3319 437-3881 115, 127, 132, 137, 173, 174, 175, 2A3, 3LW, 5DS, 7CZ, 8AZ, 9NN, 9YP, AL6, AN2, AR2, AR3, ASW, AT4, AZW, B2C, B3G, BEM, BFM, BGA, BXS, C1G, C2T, C4G, C5E, C5L, C6C, CAH, CCB, CE5, CKH, CWJ, DCT, DDS, DGK, DGL, DKE, DSJ, DWB, E1Y, GB3, GBM, GDS, GEN, GES, GRS, GSZ, GTB,