AVSPARE.COM
parts catalog

SENSOR GP-TEMPERATURE 2123423 - Caterpillar


2123423 SENSOR GP-TEMPERATURE Caterpillar parts 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, 3516C
Rating:
26
Alternative (cross code) number:
CA2123423
212-3423
2123423
Caterpillar 2123423 SENSOR GP-TEMPERATURE
Weight: 0.35 pounds 0 kg.

Buy SENSOR GP-TEMPERATURE 2123423 Caterpillar genuine, new aftermarket tractor parts with delivery
GENERATOR SET, PETROLEUM ENGINE,

Compare Prices: .

As an associate, we earn commssions on qualifying purchases through the links below
$98.45

05 Jun 2025

CN: HNHYJK
Nayuank Temperature Sensor 2123423 212-3423 Fits for Caterpillar CAT Engine 3512B 3516B 3508B 3508C 3516 Generator SR4B SR4BHV
Nayuank Part Name: Temperature Sensor || Part Number: 2123423 212-3423 Note: Please check the fitment carefully before purchase. Or just tell us the part number you need. || Engine Model: 3512B || Applicable: Fits For Caterpillar CAT Engine 3512B 3516B 3508B 3508C 3516 Generator SR4B SR4BHV || Package included: 1pcs Temperature Sensor 2123423 212-3423
$99.00

26 Feb 2025

CN: Niu CAI Departm
Temperature Sensor 212-3423 2123423 Compatible for Caterpillar CAT Engine 3512B 3516B 3508B 3508C 3516 Generator SR4B SR4BHV Replacement
NiuCAIDEP Part number: 212-3423 || Applications:for Caterpillar CAT Engine 3512B 3516B 3508B 3508C 3516 Generator SR4B SR4BHV Replacement
$105.00

19 Dec 2024

CN: YIHETOP
YIHETOP Temperature Sensor 212-3423 2123423 Compatible for Caterpillar 3512C 3516C 3508B 3512B Engine
YIHETOP Part Number:212-3423, 2123423, CA2123423 || Compatible For Caterpillar Engine:3512C, 3516, 3512, 3508, 3508C, 3508B, 3516B, 3516C, 3512B
Number on catalog scheme: 11
  For full view, you need register

Compatible equipment models: 2123423:

GENERATOR SET  3508B   3512B   3512C   3516B   3516C  
MARINE AUXILIARY  3508B   3508C   3512   3512B   3512C   3516B   3516C  
PETROLEUM ENGINE  3512C   3516C   Caterpillar

Information:

All 3208 EnginesDescription of Change: A new crankshaft seal group that has both the rear seal and the wear sleeve is used in all 3208 Engines. The advantage of the new group is that the lip-type, rear seal and wear sleeve are already assembled, and they have the correct lubricant on them. Since the parts are already assembled, the lip on the seal is not easily damaged during installation.
Formerly, a separate rear seal and wear sleeve were used. The lip on the seal was easily damaged during assembly. As a result, oil leakage was possible.
Adaptable As: The new 1W36 Crankshaft Seal Group is a direct replacement for the former 9L7600 and 9L7736 Seals and the 9L8336 Sleeve in this application. The new seal group is in effect with engine Serial Numbers 32Y80352, 90N55990, 75V7741, 79V9133, 1Z1399, 2Z1973 and 3Z1636.

Caterpillar SIS machinery equipment:

Caterpillar SIS
3516C Petroleum Engine NG300001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Generator Set PPC00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Generator Set PYL00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Generator Set PYA00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine ML200001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine ML300001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine FLW00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine BG300001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine MB200001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine SB200001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine BM200001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine MB300001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine MNW00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine RL200001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine 2A200001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine DE200001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine BG200001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine EWJ00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Engine SRH00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine TT400001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine TT500001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine FT600001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine BS200001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine TT600001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine TT700001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Petroleum Offshore Electric Drilling Engine 9F200001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Petroleum Offshore Electric Drilling Engine 9F400001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Generator Set CG700001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508 Marine Engine 69Z00275-UP » 212-3423 SENSOR GP-TEMPERATURE
3512 Marine Engine 50Y00647-01304 » 212-3423 SENSOR GP-TEMPERATURE
3516 Marine Engine 29Z00818-01119 » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Engine 8KN00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Auxiliary Engine 9AN00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Engine 4TN00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Engine 7HM00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Auxiliary Engine 8EM00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508B Marine Engine 7SM00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508B Marine Engine 2BM00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508B Marine Auxiliary Engine 3DM00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512 Marine Engine With EUI Option 3RS00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516 Marine Engine With EUI Option 3SS00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512 Marine Auxiliary Engine With EUI Option 3WS00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508B Marine Auxiliary Engine 3DW00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Auxiliary Engine 1PW00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Auxiliary Engine 2FW00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508B Marine Engine 1TW00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Engine 3CW00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512 Marine Engine 50Y01305-UP » 212-3423 SENSOR GP-TEMPERATURE
3516 Marine Engine 29Z01120-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Long Stroke Engine 4BW00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B High Displacement Marine Auxiliary Engine CBN00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B High Displacement Marine Engine CDE00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B High Displacement Marine Engine BRN00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Generator Set Oil Field Land Rig PTF00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Auxiliary Engine Military AAG00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Generator Set Oil Field Land Rig PTM00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508B Marine Auxiliary S2A00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508B Marine Auxiliary Engine S2B00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508B Marine Engine S2D00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508B Marine Engine S2E00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508B Marine Engine S2F00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Auxiliary Engine S2G00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Auxiliary Engine S2H00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Engine S2J00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Engine S2K00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Engine S2L00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Engine S2M00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Engine S2N00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Auxiliary Engine S2P00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Auxiliary Engine S2R00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Engine S2S00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Engine S2T00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Engine S2W00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Engine S2X00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Engine S2Y00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Generator Set Oil Field Land Rig LEK00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512B Marine Engine Military NSC00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine MKH00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine MRG00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine PAG00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine B5G00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Engine LLB00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516B Marine Auxiliary Engine S2Z00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Industrial Engine LLF00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508C Marine Engine TTA00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3508C Marine Engine TTB00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine TTC00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine TTE00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine TTF00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine TTG00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine TTD00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Auxiliary SLM00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine TTH00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine TTJ00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Auxiliary JTS00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine E3W00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Engine E3X00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3512C Marine Auxiliary Engine E3Y00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Marine Engine E3Z00001-UP » 212-3423 SENSOR GP-TEMPERATURE
3516C Petroleum Engine PES00001-UP » 212-3423 SENSOR GP-TEMPERATURE

Cat SIS web machinery list:

Caterpillar parts catalog
3516C Petroleum Engine NG300001-UP
3512B Generator Set PPC00001-UP
3516B Generator Set PYL00001-UP
3516C Generator Set PYA00001-UP
3516C Marine Engine ML200001-UP
3516C Marine Engine ML300001-UP
3516C Marine Engine FLW00001-UP
3516C Marine Engine BG300001-UP
3512C Marine Engine MB200001-UP
3512C Marine Engine SB200001-UP
3512C Marine Engine BM200001-UP
3512C Marine Engine MB300001-UP
3512C Marine Engine MNW00001-UP
3512C Marine Engine RL200001-UP
3512C Marine Engine 2A200001-UP
3512C Marine Engine DE200001-UP
3512C Marine Engine BG200001-UP
3512C Marine Engine EWJ00001-UP
3512B Marine Engine SRH00001-UP
3512C Marine Engine TT400001-UP
3512C Marine Engine TT500001-UP
3516C Marine Engine FT600001-UP
3516C Marine Engine BS200001-UP
3516C Marine Engine TT600001-UP
3516C Marine Engine TT700001-UP
3508 Marine Engine 69Z00275-UP
3512 Marine Engine 50Y00647-01304
3516 Marine Engine 29Z00818-01119
3516B Marine Engine 8KN00001-UP
3516B Marine Auxiliary Engine 9AN00001-UP
3512B Marine Engine 4TN00001-UP
3512B Marine Engine 7HM00001-UP
3512B Marine Auxiliary Engine 8EM00001-UP
3508B Marine Engine 7SM00001-UP
3508B Marine Engine 2BM00001-UP
3508B Marine Auxiliary Engine 3DM00001-UP
3512 Marine Engine With EUI Option 3RS00001-UP
3516 Marine Engine With EUI Option 3SS00001-UP
3512 Marine Auxiliary Engine With EUI Option 3WS00001-UP
3508B Marine Auxiliary Engine 3DW00001-UP
3512B Marine Auxiliary Engine 1PW00001-UP
3516B Marine Auxiliary Engine 2FW00001-UP
3508B Marine Engine 1TW00001-UP
3516B Marine Engine 3CW00001-UP
3512 Marine Engine 50Y01305-UP
3516 Marine Engine 29Z01120-UP
3516B Marine Long Stroke Engine 4BW00001-UP
3516B High Displacement Marine Auxiliary Engine CBN00001-UP
3516B High Displacement Marine Engine CDE00001-UP
3512B High Displacement Marine Engine BRN00001-UP
3512B Generator Set Oil Field Land Rig PTF00001-UP
3512B Marine Auxiliary Engine Military AAG00001-UP
3512B Generator Set Oil Field Land Rig PTM00001-UP
3508B Marine Auxiliary S2A00001-UP
3508B Marine Auxiliary Engine S2B00001-UP
3516B Petroleum Offshore Electric Drilling Engine 9F200001-UP
3516C Petroleum Offshore Electric Drilling Engine 9F400001-UP
3516C Generator Set CG700001-UP


Parts sensor Caterpillar catalog:

2566453 SENSOR-TEMPERATURE
120K, 120K 2, 120M 2, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 140G, 140K, 140K 2, 140M, 140M 2, 140M 3, 140M 3 AWD, 14M, 160K, 160M, 160M 2, 160M 3, 160M 3 AWD, 16M, 2290, 2390, 2391, 2491, 24M, 2570C, 259...
3E6489 SENSOR GP-PRESSURE
3208, 3304, 3304B, 3306, 3306B, 3406B, 3406C, 3408, 3412, 3508, 3512, 3516, 793C, G3306, G3406, G3412, G3508, G3512, G3516
1946725 SENSOR GP-PRESSURE
120H, 135H, 140G, 140H, 140M, 14M, 160H, 16M, 24H, 24M, 3126B, 3126E, 322C, 322C FM, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325C, 325C FM, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 328D...
1036093 SENSOR GP-PRESSURE
24H, 3408E, 3412E, 3508, 3508B, 3512, 3512B, 3516, 3516B, 5130B, 631E, 633E II, 637E, 651E, 657E, 769C, 769D, 771D, 773B, 773D, 775D, 776D, 777D, 793C, 834B, 836, 844, 988F II, 990 II, 992C, 992G, D10...
1895746 SENSOR GP-SPEED
120H, 120H ES, 120H NA, 12H ES, 12H NA, 135H, 135H NA, 140H ES, 140H NA, 143H, 160H ES, 160H NA, 163H NA, 3114, 3116, 3126, 3126B, 312C, 315C, 320B, 322B, 322B LN, 322C, 322C FM, 325B, 325B L, 325C, 3...
6V2455 SENSOR GP-SPEED
312B L, 315B L, 322B L, 325B L, 330, 3304, 3304B, 3306, 3306B, 330B, 330B L, 3406B, 3406C, 3406E, 3408, 3408C, 3412, 3412C, 3456, 345B, 345B II, 345B II MH, 345B L, 3508, 3508B, 3508C, 3512, 3512B, 35...
1611703 SENSOR GP-PRESSURE
120K, 12H, 12K, 140G, 140H, 140K, 140K 2, 140M, 143H, 14H, 160H, 160K, 160M, 163H, 16H, 2290, 2390, 2391, 2491, 2590, 3126B, 3126E, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325D, 325D FM, 325D FM L...
1611705 SENSOR AS-PRESSURE
1090, 1190, 1190T, 120K, 1290T, 12H, 12K, 140G, 140H, 140K, 140K 2, 140M, 143H, 14H, 160H, 160K, 160M, 163H, 16H, 2290, 2390, 2391, 2491, 2590, 3126B, 3126E, 324D, 324D FM, 324D FM LL, 324D L, 324D LN...
1611704 SENSOR GP-PRESSURE
120K, 12H, 12K, 140G, 140K, 140K 2, 140M, 160K, 160M, 2290, 2390, 2391, 2491, 2590, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 328D LCR, 329D, 329D L, 329D...
2644297 SENSOR AS-TEMPERATURE
120H, 120K, 120K 2, 120M, 120M 2, 12H, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 135H, 140G, 140H, 140K, 140K 2, 140M, 140M 2, 140M 3, 140M 3 AWD, 143H, 14H, 14M, 160H, 160K, 160M, 160M 2, 160M 3, 160M 3 AWD...
3203060 SENSOR-PRESSURE
120M 2, 12M 2, 12M 3, 12M 3 AWD, 140M 2, 140M 3, 140M 3 AWD, 160M 2, 160M 3, 160M 3 AWD, 2384C, 2484C, 2570C, 2670C, 2864C, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D2, 313D2 LGP, 314E CR, 314E LCR,...
3203061 SENSOR-PRESSURE
120M 2, 12M 2, 12M 3, 12M 3 AWD, 140M 2, 140M 3, 140M 3 AWD, 160M 2, 160M 3, 160M 3 AWD, 2384C, 2484C, 2570C, 2670C, 2864C, 312E, 312E L, 314E CR, 314E LCR, 316E L, 318E L, 320E, 320E L, 320E LN, 320E...
3597575 SENSOR & MOUNTING GP
CP-68B, CP-74B, CS-76B, CS-78B
3306034 SENSOR GP-ENGINE
140M, 140M 2, 160M, 160M 2, 2290, 2390, 2391, 2491, 2590, 330D, 330D FM, 330D L, 330D MH, 336D, 336D L, 336D LN, 340D L, 511, 521, 521B, 522, 522B, 532, 541, 541 2, 551, 552, 552 2, 586C, 627G, 637D, ...
3841836 SENSOR GP-SPEED
14M, 16M, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 349E, 349E L, 349E L VG, 349F L, 621H, 621K, 623H, 623K, 623K LRC, 627H, 627K, 627K LRC, 725, 730, 730C, 966H, 972H, 980C, 980K,...
2395674 SENSOR GP-PRESSURE
14M, 16M, 24M, 345C, 345C L, 345C MH, 365C, 365C L, 365C L MH, 374D L, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L, 583T, 587T, 621B, 621G, 623G, 627F, 627G, 631D, 631E, 631G, 633E II, 637D, 637E, ...
2668650 SENSOR GP-PRESSURE
120K, 120K 2, 12K, 140K 2, 160K, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 328D LCR, 329D, 329D L, 329D LN, 525C, 535C, 545C, 584, 814F II, 815F I...
1930421 SENSOR GP-SPEED
525B, 725, 725C, 730, 735, 924F, 924G, 928G, 938G, D10R, IT24F, IT28G, IT38G, TH35-C11I, TH35-C13I, TH35-C13T, TH35-C15I, TH35-C15T, TH35-E81
1932550 SENSOR GP-SPEED
120K, 120K 2, 12K, 140K, 140K 2, 160K, 561N, 572R, 572R II, 613G, 814F, 814F II, 815F, 815F II, 816F, 816F II, 824G II, 824H, 825G II, 825H, 826G II, 826H, 834G, 834H, 836G, 836H, 844, 844H, 854G, 914...
3618174 SENSOR GP-SOOT
416F, 420F, 428F, 430F, 432F, 434F, 444F
2661484 SENSOR GP-POSITION
938H, 950G, 962G, 966G, 972G, 980G, 988B, 988F, 988F II, 990 II, 990H, 992G, 994, 994D, BG-260D, CB-44B, CB-54B, IT62G, PM-465, R1300, R1300G, R1300G II, R1600, R1600G, R1600H, R1700G, R2900, R2900G, ...
1022240 SENSOR GP-TEMPERATURE
24H, 3176B, 3176C, 3196, 320D GC, 320D L, 323D L, 3406B, 3406E, 3408E, 3412E, 3456, 345B, 345B II, 345B II MH, 345B L, 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, 3516C, 365B, 365B II, 365B L...
Back to top
The names Cat, Caterpillar, John Deere, Komatsu, Volvo, Hitachi, Doosan, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
AVSpare.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only. Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc.