Caterpillar 8T4778 (M16-2.00) Replacement Locknut

*It Is Up To You To Decide For Sure If This Item Fits Your Machine. If You Need Help, Please Call Or Email Us.*

Fits Caterpillar® Applications:

Articulated Dump Truck: 725 (S/N: AFX; B1L; H6Z; 3T9), 725C (S/N: TFB), 725C2 (S/N: 2L6; 2T3), 730 (S/N: AGF; 3F3; 3T3; B1M; H6W; L6W), 730C (S/N: LFF; TFF), 730C2 (S/N: 2L7; 2T4), 735 (S/N: AWR; 3F5; 3T5; B1N; H6Y; L6Y), 735B (S/N: L4D; T4P), 735C (S/N: LFJ; TFJ), 740 (S/N: AXM; B1P; Z5J; Z5K), 740 GC (S/N: 3F8; 3T8), 740B (S/N: L4E; T4R), 740C (S/N: LFN; TFN), 745 (S/N: 3F6; 3T6), 745C (S/N: LFK; TFK), D350E II (S/N: 2XW), D400E II (S/N: 8PS)

Asphalt Paver: AP355 (S/N: 7P3; 7P5; 7P7), AP355F (S/N: END; NED; NRG; NTT), AP500F (S/N: 449; 503; AF5; F5M), AP555F (S/N: RBM; AP5; M45; 5F5), AP600 (S/N: 695; A66; N66; 3A6), AP600F (S/N: AP6; JA6; LR6; D6F), AP655 (S/N: 668; 671; 696; 697; F67; 6T5; 9P7), AP655F (S/N: 452; 453; 479; 480; 655; MH6; ML6; P65; R66; P7C), AP655F L (S/N: AC6), AP1000 (S/N: 698; 26S), AP1000F (S/N: AC4), AP1055 (S/N: 699; P26; F7T), AP1055F (S/N: RLM; TJ5)

Challenger Tractor: 35 (S/N: 8DN; 9DF), 45 (S/N: 1DR; 4DZ), 55 (S/N: 5DK; 7DM)

Cold Planer: PM620 (S/N: YLA; 663; 8RF; FG4; JB9; LB8; LH9), PM622 (S/N: 664; JCF; JFC; TPH; YLB; EL6; XS6), PM820 (S/N: TLZ; AK5; AN8; HN8; RL3), PM822 (S/N: EE2; JB7; SL8; E8S; H6S), PM825 (S/N: 626; 627; ESE; HC8; 3C6)

Crawler Tractor-Loader-Dozer: 953 (S/N: KPL; LTL; YTL), 953D (S/N: LBP), 953K (S/N: JNR; LJT), 963 (S/N: LTT; ZCB), 963C (S/N: BBD; 2DS), 963D (S/N: LCS), 963K (S/N: LBL; YDR), 973 (S/N: ELY; FSA), 973C (S/N: BCP; LDX; 3RZ), 973D (S/N: LCP), 973K (S/N: MKL; AF9), D1 (S/N: XKF; XKL; XT3), D2 (S/N: XKM; XKR; XKW; XKY; XT5), D3K LGP (S/N: JTD; LLL), D3K XL (S/N: FFF), D3K2 LGP (S/N: GAE; JPJ; KLL; KL2; LT3), D3K2 XL (S/N: KFF; FT3; KF2), D4 (S/N: EJK; FRP; JPH; KWM; MTT; RKR; RLT; STT; AX9; H3C; K3G; S4A), D4K LGP (S/N: RRR), D4K XL (S/N: MMM), D4K2 LGP (S/N: KRR; KR2), D4K2 XL (S/N: KMM; KM2), D5 (S/N: BMG; KML; KTA; NKW; NKX; ZDA; HL9; HR7; RG9; ST6; Z2K; Z2N; Z2P; Z6A), D5K LGP (S/N: JLF; YYY), D5K XL (S/N: WWW), D5K2 LGP (S/N: KYY; RRE; TRF; KY2), D5K2 XL (S/N: KWW; KW2; WT3), D5M (S/N: 3CR; 3DR; 4BR; 4JS; 5ES; 5FS; 6AS; 6GN), D5N (S/N: AGG; AKD; CFH; CKT), D5R LGP (S/N: D5L), D5R XL (S/N: D5X), D5R2 (S/N: WDZ; WRE; R5A), D6 (S/N: EDL; HNK; KEW; KKD; KMT; KTW; RBP; RDC; PVD; XMM; ZMA; AG9; CZ9; HR9; JJ6; KD5; LB5; LB7; LF9; RA9; SA9; SG6; TB6; WH5; 6A4; 6G4; 6L4; 6M4; 6N4), D6 GC (S/N: WJG; XPC), D6 XE (S/N: HFE; HLY; HMH; HZL; LNC; LRG; TPL; WGY; XEC; ES9; B72; D5M; 6B2; 6B4; 6R8; 6S7; 6T3; 6Y6), D6H (S/N: 1FJ; 5HF; 6CF), D6H XL (S/N: 8ZJ; 9KJ; 9LK), D6H XR (S/N: 1YL), D6K (S/N: ZLJ; MP7; 6S6), D6K LGP (S/N: DHA), D6K XL (S/N: FBH), D6K2 (S/N: MGM; MXK; RPR; EL7; 7P6), D6K2 LGP (S/N: JTR; RST), D6K2 XL (S/N: DFR; WMR), D6M (S/N: 2RN; 2YS; 3WN; 4GS; 4HS; 4JN; 5NR; 5WR; 6LR; 9ZM), D6N (S/N: AKM; ALH; ALR; ALY; CBF; CBJ; CBL; CCG; CCK; CCS; DJA; DJY; GHS; JAH; LJR; MLW; GB6; P5S; P5T; P5W), D6N LGP (S/N: PBA; SGG; MG5), D6N OEM (S/N: SC6), D6N XL (S/N: NJN; PER), D6R (S/N: DMP; 1RW; 2HM; 2YN; 3ZN; 4FM; 4HN; 4JR; 4MN; 4TR; 4WR; 5LN; 5PR; 5RR; 6FR; 6GR; 6HR; 6JN; 6MR; 7AR; 7DR; 7GR; 7KN; 8LN; 8TM; 8XN; 9BM; 9MN; 9PN; 9ZS), D6R II (S/N: AAX; ACJ; ADE; AEM; AEP; AFM; AGM; BLE; BLT; BMJ; BMY; BNC; BPM; CAD; DAE; FDT; SSS), D6R III (S/N: DLM; DMK; DPS; GJB; GMT; HCD; HDC; HKE; JDL; LFM; MRT; MTJ; RFC; TBC; WCB; WRG), D6R LGP (S/N: PPP), D6R STD (S/N: EMM), D6R XL (S/N: JEN; TTT), D6T (S/N: DJG; GCT; HYT; JHB; JML; JNM; JWD; KJL; LAE; LAY; LBD; LKJ; NDY; PEZ; RLW; SGZ; SKL; SMC; WCG; WFH; ZEB; AK7; MB5; MH7; K1R; 2B3; 2D2; 7C9), D6T LGP (S/N: EJJ; HTZ; JRW; KSB; PLR; SGT; ZJB), D6T LGP PAT (S/N: RAD; CR3), D6T XL (S/N: DTD; GMK; JZC; KMR; MEL; TSM), D6T XL PAT (S/N: SGA; WES), D6T XW (S/N: RCW; RRK; SLJ; TMY; WLM; CG8), D6T XW PAT (S/N: STE; WRN), D7 (S/N: HPM; HXA; CM9; EW7), D7E (S/N: HKA; MDB; SCG; SSH; TAN), D7E LGP (S/N: TJA), D7R (S/N: DSH; R7B), D7R II (S/N: ABJ; ACS; ADW; AEC; AFG; AGN), D7R LGP (S/N: DLN; R7H), D7R XR (S/N: DJR; R7C), D8 (S/N: EJS; XJB; XPA; XRS; ZMG; AE8; AW8; BB8; JJ8; KD8; MN8; RPJ; XCS; XJT), D8 GC (S/N: KGX; M8D), D8R (S/N: DWJ; MEJ; RJM; JR8; 7XM; 9EM; T5X), D8R II (S/N: AKA; 6YZ), D8T (S/N: FCT; FMC; KPZ; MLN; AW4; JJ5; MB8; J8B), D10 (S/N: GKD; MGY), D11 (S/N: KSN; TKN)

Dump Truck: 769D (S/N: BBB), 770 (S/N: BZZ; YM2; YM3; YM4; YM5; YW2; YW3; YW4; YW5), 770G (S/N: ECM; ECX; KDH; RMD; TWA; KD2), 770G OEM (S/N: RMA), 771D (S/N: BCA), 772 (S/N: RLB; YM6; YM7; YM8; YM9; YW6; YW7; YW8; YW9), 772G (S/N: KEX; LTS; LTX; RMH; TWB; KE3), 772G OEM (S/N: RME), 773 (S/N: FKT; FY8; FY9), 773 GC (S/N: RJZ), 773B (S/N: 63W), 773D (S/N: NBJ; 7CS; 7ER), 773E (S/N: ASK; BDA; DJS; KEG; PRB), 773F (S/N: EED; EXD), 773G (S/N: JWS), 773G LRC (S/N: MWH), 773G OEM (S/N: T5S; T5T), 775 (S/N: EPO; FY2; FY3; FY4; FY6; D75; K75; L75), 775B (S/N: 7XJ), 775D (S/N: 6KR; 8AS), 775E (S/N: BEC), 775F (S/N: DLS; EYG), 775G (S/N: MJS), 775G LRC (S/N: RFM), 775G OEM (S/N: T5F; T5W), 776C (S/N: 2TK), 776D (S/N: AFS; 5ER), 777 (S/N: 7M2; 7M3; 7M4; 7M6; 7W2; 7W3; 7W4; 7W6; 7W8; 7W9), 777C (S/N: 4XJ), 777D (S/N: AGC; AGY; 3PR), 777E (S/N: KDP; KDZ; KYD), 777F (S/N: JRP; JXP), 777G (S/N: RDR; TNM; GT7; T4Y; T5A), 785 (S/N: ZSB; R2R), 785G (S/N: RTL; TRG), 789 (S/N: WRL), 789G (S/N: TR2), 793D (S/N: FDB), 794 AC (S/N: HRT; MN5; MT5), 796 AC (S/N: HRY; HRZ), 797 (S/N: 5YW), 797B (S/N: JSM), 797F (S/N: LAJ; LTZ; WSP), 798 (S/N: ST7), 798 AC (S/N: SKH; ST3), MT4400D AC (S/N: MH4; MT4)

Engine Generator Set: 3306 (S/N: 85Z), 3508 (S/N: 5PW), 3508B (S/N: 5KW), 3512 (S/N: 6WW), 3512B (S/N: 6GW), 3516 (S/N: YAL; YAS; 8TW), 3516B (S/N: FDX; YAP; YAR; YAT; 8NW), 3516C (S/N: EYR; EYS; EYZ; EZH; LYM; LY5), C9.3 (S/N: C93), C18 (S/N: DTP; GBM; JHL; MGS; SSM; SSW), C32 (S/N: RTK; GM2; GM3; MG4), G3412 (S/N: E4W; E4Y),

Excavator: 301.8 (S/N: H8X), 301.8C (S/N: JSB), 302 CR (S/N: RHM), 302.2D (S/N: LJG), 302.4D (S/N: LJN), 302.5 (S/N: 4AZ), 302.5C (S/N: GBB), 302.7 CR (S/N: 3C3; 3X3), 302.7D (S/N: LJL), 303 (S/N: MA), 303.5 (S/N: AFW; DCH), 303.5C (S/N: DMY), 303.5D (S/N: RHP), 303.5E (S/N: RKY; JX2), 303.5E2 CR (S/N: BG8), 303C CR (S/N: BXT), 303E CR (S/N: HHM), 304 (S/N: NAD), 304.5E2 (S/N: FXT), 304D CR (S/N: TYK), 304E (S/N: TTN), 304E2 CR (S/N: CJ2), 305 (S/N: DSA), 305.5D (S/N: FLZ), 305.5E (S/N: FKY), 305.5E2 CR (S/N: EJX), 305D CR (S/N: XER), 305E (S/N: XFA), 305E2 CR (S/N: DJX), 306 (S/N: 6G6), 307E2 (S/N: KC9), 308E (S/N: GBJ), 308E2 CR (S/N: FJX; TMX), 310 (S/N: GWT), 311D LRR (S/N: CLA; DWR; LKA), 320B L (S/N: 6CR), 320D FM (S/N: BWW; CYZ), 320E L (S/N: TNJ; WBK), 320E LRR (S/N: TFX), 322A L (S/N: 9RL), 322L (S/N: 9RL), 323 (S/N: NDL), 324D FM (S/N: JKR), 325A (S/N: 6RM), 325A FM L (S/N: 7LM), 325B L (S/N: 2JR), 325C (S/N: BKW), 325D FM (S/N: C7K; C8L), 330A (S/N: 2ZM), 330A L (S/N: 5YM), 330B L (S/N: 3YR; 4RS; 5LS; 6DR), 330B LN (S/N: 5LR), 330D FM (S/N: E4K; H3K), 340 (S/N: ZDP), 345B II (S/N: AGS), 345B L (S/N: 4SS), 350A (S/N: 2ZL; 3ML; 7RK; 8HK), 350A L (S/N: 8KZ; 9DK; 9FL), 350L (S/N: 9DK), 375A (S/N: 6NK; 6RL; 8WJ; 8XG), 375A L (S/N: 1JM; 9WL), 538 (S/N: JEY; KBJ), 548 (S/N: SFZ; WRA), 558 (S/N: LRT; F5G; F5L), 568 FM (S/N: YJX; GF8; L68), 5080 (S/N: 6XK; 8SL), M313D (S/N: K3D), M318 (S/N: KE7; K8X), M318F (S/N: F8B), M322 (S/N: KE6)

Feller Buncher: 511 (S/N: 511), 521 (S/N: FKB; FKJ; 521), 521B (S/N: F7B), 522 (S/N: SJE; SJN; 522), 522B (S/N: F7C), 532 (S/N: 532), 541 (S/N: 541), 541 II (S/N: F7D), 551 (S/N: 551), 552 (S/N: 552), 552 II (S/N: F7G), 553C (S/N: PGR; W53), 563C (S/N: JCB; W63), 563D (S/N: D63), 573C (S/N: RJT; W73), 573D (S/N: D73), 1090 (S/N: BZJ), 1190 (S/N: BZK), 1190T (S/N: BZL), 1290T (S/N: BZM), 1390 (S/N: B3F), 2290 (S/N: P2D), 2390 (S/N: P3H), 2391 (S/N: P4K), 2470C (S/N: W47; W2M), 2491 (S/N: P5J), 2570C (S/N: W57; F1B), 2570D (S/N: D25), 2590 (S/N: P6B), 2670C (S/N: W67; B3E), 2670D (S/N: D26), TK711 (S/N: 101), TK721 (S/N: 102), TK722 (S/N: 103), TK732 (S/N: 104), TK741 (S/N: 202), TK751 (S/N: 301), TK752 (S/N: 302)

Forestry Grapple: GH52 (S/N: ARM; ATR; 7DW), GLL52 (S/N: GRD; LXW), GLL52B (S/N: GMZ; GXX), GLL55 (S/N: GRH: LXS), GLL55B (S/N: GME; GXY), GLL60 (S/N: GMH; LXP; A3D), GLL60B (S/N: GXZ)

Forwarder: 554 (S/N: TGH; 1AM), 564 (S/N: KBN), 574 (S/N: 1FM), 574B (S/N: CZZ; RLS), 584 (S/N: PAK), 584HD (S/N: PBK; 109)

Harvester: 550 (S/N: 7ZN), 550B (S/N: SAW), 560B (S/N: TRA), 570 (S/N: 4XR), 570B (S/N: CKG), 580 (S/N: 7CN), 580B (S/N: CLT)

Harvester Head: HH45 (S/N: CFE; 2JZ), HH44 DE (S/N: RMB), HH55 (S/N: CFS; 3MZ), HH65 (S/N: CKJ; 4RZ), HH75 (S/N: CKW; 5WZ)

Hydraulic Hammer: H100 (S/N: HE3), H110 GC (S/N: H44), H115E (S/N: HK3), H115E S (S/N: HHD)

Industrial Engine: 3516C (S/N: 262, 263)

Knuckleboom Loader: 539 (S/N: 1PZ)

Landscaper Tiller: LT13 (S/N: AAS), LT13B (S/N: CHZ), LT18 (S/N: ABZ), LT18B (S/N: LDA), LT114 (S/N: N7W), LT118 (S/N: N7X)

Loader/Backhoe: 414E (S/N: ELB), 415F2 (S/N: HWA), 416 (S/N: H9P; L9P), 416D (S/N: BFP; CXP), 416E (S/N: BWC; CBD; LMS; MFG; SHA), 416F (S/N: KSF; LWT), 416F2 (S/N: HWB; LBF; LYA), 420 (S/N: H9T; L9T), 420D (S/N: BLN; FDP), 420E (S/N: DAN; DJL; HLS; KMW; PHC; PRA), 420F (S/N: JWJ; LKH; LTG; SKR), 420F2 (S/N: HWC; HWD; LBS; LYB; LYC), 422E (S/N: DSK; HBE; MAW), 422F (S/N: LRH), 422F2 (S/N: LYF), 424 (S/N: JTJ; JJ4), 424D (S/N: CJZ; RXA), 426 (S/N: JZ4), 426F2 (S/N: DJ4; EJ4), 427F2 (S/N: HWK), 428D (S/N: BXC; DSX; MBM), 428E (S/N: DPH; DXC; SNL), 428F (S/N: LBH; RAK; SJW), 428F2 (S/N: HWN; LYG), 430D (S/N: BML; BNK), 430E (S/N: DDT; EAT; MXB; RLN; SCD; SWC), 430F (S/N: LDY; LNH; RDF; RGS), 430F2 (S/N: HWE; HWG; LYD; LYE), 432D (S/N: TDR; WEP), 432E (S/N: BXE; JBA; RXS), 432F (S/N: LNR; PXR; SEJ), 432F2 (S/N: HWP; LYJ), 434E (S/N: SEF), 434F (S/N: FLY; LDH; MTR), 440 (S/N: MZX; DC9; H9W), 442D (S/N: SMJ; TBD), 442E (S/N: EME; GKZ; PCR), 444E (S/N: HXB; NBA), 444F (S/N: FBN; JXR; LJJ), 450 (S/N: DYN; KJH; H9Y), 450E (S/N: EBL; LYR; RBA), 450F (S/N: HJR)

Log Loader: 324D FM LL (S/N: JLS), 325D FM LL (S/N: C9M), 568 FM LL (S/N: BRB), FM538 (S/N: SNN), FM568 (S/N: FHW)

Motor Grader: 12H (S/N: AMZ; CBK), 12H ES (S/N: 2GS; 2LR), 12M (S/N: B92; B9F; B9R; R9B), 12M2 (S/N: F9B; F9M; R9P; R9S), 12M3 (S/N: N9F; N9R), 12M3 AWD (S/N: N9B; N9P), 14 (S/N: BB7; EN4; NN4; F58), 14H (S/N: ASE), 14H NA (S/N: 7WJ), 14L (S/N: B94), 14M (S/N: B9J; R9J), 14M3 (S/N: E9S; N9S), 16 (S/N: EN5; NN5; F43; F52), 16 GC (S/N: EB9), 16H (S/N: ATS), 16H NA (S/N: 6ZJ), 16M (S/N: B9H; R9H), 16M3 (S/N: E9Y; N9Y), 18 (S/N: EN6; NN6; F44; F53), 18M3 (S/N: E9W; N9A), 24 (S/N: E9Z; N9Z), 24H (S/N: 7KK), 24M (S/N: B93; B9K), 120 (E93; E94; E95; F87; F88; Y95; Y97; Y9B; Y9C; Y9D), 120 GC (S/N: W96; W98; W9D; W9L; W9M; W9N), 120H (S/N: ALZ; CAF), 120H ES (S/N: 9YR), 120M (S/N: CBS; NJD; PJB; RMY; B9C; B9N; B9W; D9W; R9A; R9C), 120M2 (S/N: M92; M9C; M9H; R9N; R9W), 140 (S/N: ENF; ENH; EB2; EB3; FF4; FF5; FF6; FP4; FP9; HD4; HD5; HD6; HL4; HL6; NJ4; NJ6; B54; N95), 140 GC (S/N: W92; W93; W94; W95; W9E; W9F; W9G; W9H; W9J; W9X; W9Y; W9Z), 140H (S/N: APM: CCA), 140H ES (S/N: 3AS; 8KM), 140M (S/N: B9D; B9G; B9M; D9G), 140M2 (S/N: M9D; M9J; R9G; R9M), 140M3 (S/N: N9D; N9M), 140M3 AWD (S/N: N9G; N9J), 143H (S/N: APN; 1AL), 150 (S/N: ENJ; ENK; EB4; EB5; B55; B56), 160 (S/N: ENL; ENM; EB6; EB7; B57; B59), 160H (S/N: ASD; CCP), 160H ES (S/N: 2HS), 160M (S/N: B9E; B9L; B9T; D9T), 160M2 (S/N: M9E; M9K; R9L; R9T), 160M3 (S/N: N9E; N9L), 160M3 AWD (S/N: N9K; N9T), 163H (S/N: ARL), 163H NA (S/N: 5AK)

Mulching Head: HM825 (S/N: A67), MD250 (S/N: HM2)

Pipelayer: 561M (S/N: 1KW), 561N (S/N: CPH; TAD), 572R II (S/N: DSC), 583T (S/N: CMX), 587R (S/N: BXL), 587T (S/N: FAT), PL72 (S/N: P72; P73), PL83 (S/N: DLW; KSD; CB2; H83; R83), PL87 (S/N: KKJ; TEC; ZAC; H87; R87)

Road Reclaimer: RM300 (S/N: BWR), RM400 (S/N: AK3; K4H; N4L; R2J; R4H; Z4M), RM500 (S/N: ASW; JSX; F5H; R5W; Y5L), RM500B (S/N: RMZ; TAS; MB9; E5K; S3A), RM600 (S/N: NAF; BT8; M6L; R6H), RM800 (S/N: GMP; KFS; TPW; E8H; L8L)

Roller/Compactor: 836G (S/N: BRL; 7MZ), 836H (S/N: BXD), CB214B (S/N: 6LF), CB224B (S/N; 6LF), CB434B (S/N: 7YN), CB434C (S/N: 4MW), CB521 (S/N: 6RD), CB522 (S/N: 6SD), CB523 (S/N: 6TD), CB523B (S/N: 7FK), CB524 (S/N: 6WD), CB525 (S/N: 6XD), CB525B (S/N: 1NL), CB534 (S/N: 2EG; 2YF), CB534B (S/N: 5RN), CB534C (S/N: 1WS), CB535B (S/N: 3AR), CB544 (S/N: 8FM), CB545 (S/N: 2FS), CP433C (S/N: 1ZN; 2JM; 4JZ), CP533C (S/N; 3YN), CP563C (S/N; 5JN; 5KN), CS431C (S/N: 3WZ; 6EN; 9XL), CS433C (S/N: 2TN; 3TM: 5BZ), CS531C (S/N: 9RN), CS533C (S/N: 2XN), CS563C (S/N: 4KN; 4LN), CS573C (S/N: 6LN), CS583C (S/N: 7MN; 7NN), PF300 (S/N: 7WD), PF300B (S/N: 6HM), PF300C (S/N: PFB), PS300 (S/N: 7TD), PS300B (S/N: 4PM), PS300C (S/N: PFS), PS500 (S/N: 7XD)

Scraper: 621 (S/N: WYD; WYJ; WYX; WYY), 621H (S/N: DBK; EAZ; HKK; NYY), 621K (S/N: WTA; WTL), 621K OEM (S/N: WTE; WTP), 623 (S/N: WYF; WYK), 623H (S/N: DBF; EJD), 623K (S/N: WTB), 623K LRC (S/N: WTM), 627 (S/N: WYG; WYL), 627H (S/N: DBW; LCT), 627K (S/N: WTC), 627K LRC (S/N: WTN), 637 (S/N: WYN; WYR; WYS; WYT), 637K (S/N: WTS; WTT; WTX; WTY),

Site Prep Tractor: 586C (S/N: SL5; SP5), SP4 (S/N: SP4)

Skid Steer: 216 (S/N: 4NZ), 216B (S/N: RLL), 216B3 (S/N: DSN; PWK; PWM; CD3; HR2; SL3), 226 (S/N: 5FZ), 226B (S/N: MJH), 226B3 (S/N: DXZ; NRK; SNA; AS2; F3D), 226D3 (S/N: DX8; D5R), 228 (S/N: 6BZ), 232 (S/N: CAB), 232B (S/N: SCH), 232D3 (S/N: HRS; PWN; D5Z), 236 (S/N: 4YZ), 236B (S/N: HEN), 236D (S/N: BGZ; K2D), 236D3 (S/N: KXL; AZ6; GK6; F9C), 239D (S/N: BL9; CD4), 239D3 (S/N: RWK; HC9; KE9; K5S), 242 (S/N: CMB), 242B (S/N: BXM), 242D (S/N: DML; DZT; HFB; A9W), 242D3 (S/N: HSX; NXL; ME6; R2L; T7Z; T8A; T8T; T8W), 246 (S/N: 5SZ), 246B (S/N: PAT), 246D (S/N: BYF; MKT; PN5), 246D3 (S/N: AH6; EP3; GM6; KC6; PF6; TC7; TM7; T9X; T9Z), 247 (S/N: CML), 247B (S/N: MTL), 247B3 (S/N: ESL; TSL; KB3), 248 (S/N: 6LZ), 249D (S/N: GWR; AH9), 249D3 (S/N: WKD; WS5; P9C; R9E), 250 (S/N: 5L2; 5L6), 252 (S/N: FDG), 252B (S/N: SCP), 252B3 (S/N: TNK), 255 (S/N: DY7; FL7), 257 (S/N: CMM), 257B (S/N: SLK), 257B3 (S/N: B7H), 257D (S/N: EZW; EML; FMR; D5T), 257D3 (S/N: FMA; KEZ; LM7; S7E), 259B3 (S/N: YYZ), 259D (S/N: FTL; FTK; GTK; LW5), 259D3 (S/N: TLS; CW9; MC9; TE9), 260 (S/N: 5L7; 5L9), 262 (S/N: CED), 262B (S/N: PDT), 262C2 (S/N: TMW), 262D (S/N: DTB; KTS; LST; AJ7; RE5), 262D3 (S/N: MXJ; BT2; EP8; TP3; TP4; TP6; TP7; W6E), 265 (S/N: GPR; JN6; KR4), 267 (S/N: CMP), 267B (S/N: CYC), 270 (S/N: 6L5; 7L5), 270 XE (S/N: 8L5), 272D (S/N: B5W), 272D XHP (S/N: ETL; SHY), 272D3 (S/N: HX2; TP9; TY3; L32), 272D3 XE (S/N: GJ2; TY4; TY6; S1L), 275 (S/N: P9F; R8Y), 275 XE (S/N: ZE8; T8X), 277 (S/N: CNC), 277B (S/N: MDH), 277C (S/N: JWF; KCC), 277C2 (S/N: MET), 277D (S/N: FMT; MLT; NTL), 279C (S/N: MBT), 279C2 (S/N: KWB), 279D (S/N: GTL; PPT; RCX; WEF; TP5), 279D3 (S/N: EP7; RB9; SZ9; TB9; Z9E), 285 (S/N: WH9; 2X2), 285 XE (S/N: 2X3), 287 (S/N: CNY), 287B (S/N: ZSA), 287C (S/N: MAS), 287C2 (S/N: SSB), 287D (S/N: HMT; STK; TLK), 289C (S/N: JMP), 289C2 (S/N: RTD), 289D (S/N: TAW; WCT; KB9; WE5; A9Z), 289D3 (S/N: BT9; EP9; JX9; KX9; LA9), 297C (S/N: GCP), 297D (S/N: BE7), 297D XHP (S/N: HP7), 297D2 (S/N: BL7), 297D2 XHP (S/N: HP2), 299C (S/N: JSP), 299D (S/N: GTC; HCL), 299D XHP (S/N: JST; NLC), 299D2 (S/N: BY4; FD2), 299D2 XHP (S/N: HLM; DX2; DX9), 299D3 (S/N: CY9; DY9; JX3; P3R), 299D3 XE (S/N: XES; AN9; BX9; GX9; LB3; B62; R23; S38)

Snow Blower Attachment: SR117 (S/N: WSG), SR118 (S/N: SNB), SR121 (S/N: SNR), SR318 (S/N: SRW), SR321 (S/N: SWX)

Telehandler: RT50 (S/N: 4XG; 5PF), RT50SA (S/N: 8DJ), RT60 (S/N: 5DG), RTC60 (S/N: 4XG; 5PF), TH210 (S/N: CEC; MHT), TH215 (S/N: CEG; MHS), TH255C (S/N: JK3), TH414C (S/N: KEK; RWW), TH417C (S/N: RRJ; RRW), TH514C (S/N: KKW; MWC)

Trencher Attachment: T6B (S/N: KSK; T6Z), T9B (S/N: JAJ; TB4), T15B (S/N: SLW; FT5), T109 (S/N: T6Y), T112 (S/N: TB7), T315 (S/N: FT8)

Underground Articulated Truck: AD30 (S/N: CXR; DXR; GXR), AD45 (S/N: J4W), AD45B (S/N: CXM; GXM), AD55 (S/N: ANW; DNW; GNW), AD55B (S/N: JNW)

Wheel Dozer: 824 (S/N: F4M; K4K), 824K (S/N: RWB; 234; 2L4; 2T2), 834 (S/N: SVD; TVP; TXU; S3D), 834K (S/N: LWY; TWY; TW4; L4Y)

Wheel Loader: 902 (S/N: 7ES), 903C (S/N: MW4), 903C2 (S/N: MW8), 903D (S/N: MZY), 904B (S/N: B4L), 904H (S/N: H4T), 906 (S/N: MER; EZ6; HZ6; LZ6; LZ8; MZ6; 6ZS), 906H (S/N: SDH; TPE), 906H2 (S/N: JRF), 906K (S/N: L66), 906M (S/N: H66; K56; Z66), 907 (S/N: HZ7; MZ7), 907H (S/N: MJF; SJM), 907H2 (S/N: JRS), 907K (S/N: L77), 907M (S/N: H77; K57; Z77), 908 (S/N: TAR; HZ8; LZ8; MZ8; 8BS), 908H (S/N: LMD; MXF), 908H2 (S/N: JRD), 908K (S/N: L88), 908M (S/N: H88; K58; Z88), 914 (S/N: JC3), 920 (S/N: SL4), 924F (S/N: 6MN), 924H (S/N: HXC), 924K (S/N: PWR; SNZ), 926 (S/N: K8E), 926M (S/N: LTE; W5L), 928F (S/N: 8AK), 930 (S/N: F3S), 930H (S/N: DHC), 930K (S/N: FRK; RHN), 930M (S/N: KTG; F5K), 938 (S/N: EZY), 938H (S/N: MJC), 938K (S/N: REP), 938M (S/N: J3R; P5K), 950 (S/N: WL7), 950 GC (S/N: TN3; TN7), 950H (S/N: K5K), 950K (S/N: J5M; R4A), 950M (S/N: EMB; FTR; KSA), 962 (S/N: WLJ; WL9), 962H (S/N: K6K), 962K (S/N: T6A; X4T), 962M (S/N: EJB; RKH; F2T), 966 (S/N: WLW), 966 GC (S/N: SG7), 966 XE (S/N: EL8), 966H (S/N: A6D), 966K (S/N: PBG; TFS), 966M (S/N: GMS; KJP; L8R), 966M XE (S/N: XCR; B8P), 972 (S/N: SM2), 972 XE (S/N: MBY), 972H (S/N: A7D), 972K (S/N: PEM; Z4W), 972M (S/N: A78; A8P; M8W), 972M XE (S/N: AN3; M5S), 980H (S/N: JMS), 980K (S/N: W7K), 980M (S/N: KRS; XDJ), IT24F (S/N: 6KN), IT28F (S/N: 1JL)

This Is A Brand New Aftermarket Item.

Caterpillar 8T4778 (M16-2.00) Replacement Locknut

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