AVSPARE.COM
parts catalog

PUMP GP-PISTON 2590814 - Caterpillar


2590814 PUMP GP-PISTON Caterpillar parts 345C, 345C L, 345C MH, W345C MH
Rating:
60
Alternative (cross code) number:
CA2590814
259-0814
2590814
Caterpillar 2590814 PUMP GP-PISTON
Weight: 40 pounds 18 kg.

Buy PUMP GP-PISTON 2590814 Caterpillar genuine, new aftermarket tractor parts with delivery
EXCAVATOR, WHEELED EXCAVATOR,

Related part:
2590814  PUMP GP- HYD  10R6275  R

Compare Prices: .

As an associate, we earn commssions on qualifying purchases through the links below
$2,557.80

28 Aug 2025

CA: High Quality Pa
CARTEX Piston Pump 259-0814 for FITS Caterpillar CAT 345C Excavator C13 Engine
CARTEX Whether you're a professional mechanic or a DIY enthusiast,We've got you covered with a wide range of parts that meet the highest standards of quality and performance. || Order your High Quality Part with peace of mind, knowing we prioritize your satisfaction. Quality Parts, Superior Performance - it's not just a promise, it's our standard || QUESTIONS? : We at CARTEX - High Quality Parts USA has more than 40 years of experience in industry and has in-house technicians, If you are not sure if this part fits your machine or tractor, just send us an email before you make the purchase and our in house technicians will revert back to you, right away.
$1,423.71

25 Jul 2025

US: YEM PARTS
YANNAL PART Piston Pump 259-0814 155-9248 Suitable for Caterpillar CAT 345C Excavator C13 Engine
YANNAL PART Product Name: Piston Pump || Part Number: 259-0814 155-9248 || Application: Compatible for Caterpillar CAT345B/C || Warranty: 1 Year || Note: Please verify your part number before ordering, any problem please feel free to contact us, thanks.
$1,910.43

15 Jul 2025

Amazon.com
CTP 2590814 Hydraulic GP Piston Pump for Model 345C, 345C L, 345C MH, W345C MH
CTP Sold in each || Highly Efficient || Easy in-and-out fit
Number on catalog scheme: 6
  For full view, you need register

Compatible equipment models: 2590814:

EXCAVATOR  345C   345C L   345C MH  
MOBILE HYD POWER UNIT  345C L  
WHEELED EXCAVATOR  W345C MH   Caterpillar

Information:

Remove & Install Piston & Connecting Rod Assemblies
Start By:a. remove cylinder head assemblyb. remove oil pan 1. Remove the bolt that holds piston cooling jet (1) in position. Remove the piston cooling jet.2. Check the connecting rods and caps for their identification mark and location. The connecting rod and the rod cap should have the cylinder number etched on the right side as indicated by the arrow. If not marked, etch each unmarked connecting rod/or cap during removal.3. Remove rod cap bolts (2) and the cap from the connecting rod. Remove the lower half of the bearing from the cap. 4. Push piston and connecting rod (4) away from the crankshaft; then remove the upper half of rod bearing (5).5. Remove the piston and connecting rod from the cylinder block.6. Repeat Steps 1 through 5 for the other piston and connecting rod assemblies. The following steps are for the installation of the pistons and connecting rod assemblies.7. Put clean engine oil on the piston rings, piston and in the cylinder bore. 8. Position the piston ring end gaps 120 degrees apart. Install Tool (A) to compress the rings.9. With the number one crankshaft throw at bottom center, install the piston and connecting rod. Some engines use pistons which have the word "FRONT" stamped on the crown of the piston. Be sure the word "FRONT" is toward the front of the engine when the piston is installed. The etched number on the connecting rod must be on the right side and must be installed in the corresponding cylinder.10. Line up the connecting rod with the crankshaft. Using a soft faced hammer, carefully tap the piston into the cylinder bore until Tooling (A) comes off of the piston.11. Before the connecting rod comes in contact with crankshaft, install the upper half of the rod bearing. Be sure the bearing tab properly engages the with slot in the connecting rod.12. Put clean engine oil on the upper rod bearing surface. Using a soft faced hammer, tap the piston down while guiding the connecting rod onto the crankshaft.13. Position the lower half of the rod bearing in the corresponding numbered rod cap. Be sure the bearing tab engages with the grove in the rod caps.14. Put clean engine oil on the lower rod bearing surface; then install the rod cap. Install the bearing cap on the connecting rod with the number on the bearing (rod) cap on the same side and same number as on the connecting rod.15. Put 2P2506 Thread Lubricant on the threads of rod cap bolts (1) and the seating surfaces of the caps. Install rod cap bolts (1). Tighten them to a torque of 130 7 N m (95 5 lb ft). Mark each bolt head, and then tighten each rod cap bolt an additional 1/6 60 5 degrees ( turn).16. Repeat Steps 7 through 15 for the remainder of the piston and connecting rod assemblies.17. Install piston cooling jets (1).End By:a. install oil panb.

Caterpillar SIS machinery equipment:

Caterpillar SIS
345C L Hydraulic Excavator ESD00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C Fixed Cab Riser Material Handler M2R00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C Fixed Cab Riser Material Handler M2R00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C LC Excavator DHP00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C & 345C L Excavators BWY00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
W345C Material Handler R5K00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C Excavator TAJ00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C HCR Material Handler D3S00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C HCR Material Handler D3S00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C & 345C L Hydraulic Excavator ELS00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C UHD Excavator SPC00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C L Hydraulic Excavator FPC00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C L Hydraulic Excavator GPH00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C L Hydraulic Excavator LYS00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C L Mobile Hydraulic Power Units B6N00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C L Excavator S5M00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C HCR Material Handler MTE00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C L Excavator SCN00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON
345C & 345C L Mobile Hydraulic Power Units M3E00001-UP (MACHINE) POWERED BY C13 Engine » 259-0814 PUMP GP-PISTON

Caterpillar parts catalog:

Caterpillar parts catalog
345C L Hydraulic Excavator ESD00001-UP (MACHINE) POWERED BY C13 Engine
345C Fixed Cab Riser Material Handler M2R00001-UP (MACHINE) POWERED BY C13 Engine
345C LC Excavator DHP00001-UP (MACHINE) POWERED BY C13 Engine
345C & 345C L Excavators BWY00001-UP (MACHINE) POWERED BY C13 Engine
W345C Material Handler R5K00001-UP (MACHINE) POWERED BY C13 Engine
345C Excavator TAJ00001-UP (MACHINE) POWERED BY C13 Engine
345C HCR Material Handler D3S00001-UP (MACHINE) POWERED BY C13 Engine
345C & 345C L Hydraulic Excavator ELS00001-UP (MACHINE) POWERED BY C13 Engine
345C UHD Excavator SPC00001-UP (MACHINE) POWERED BY C13 Engine
345C L Hydraulic Excavator FPC00001-UP (MACHINE) POWERED BY C13 Engine
345C L Hydraulic Excavator GPH00001-UP (MACHINE) POWERED BY C13 Engine
345C L Hydraulic Excavator LYS00001-UP (MACHINE) POWERED BY C13 Engine
345C L Mobile Hydraulic Power Units B6N00001-UP (MACHINE) POWERED BY C13 Engine
345C L Excavator S5M00001-UP (MACHINE) POWERED BY C13 Engine
345C HCR Material Handler MTE00001-UP (MACHINE) POWERED BY C13 Engine
345C L Excavator SCN00001-UP (MACHINE) POWERED BY C13 Engine
345C & 345C L Mobile Hydraulic Power Units M3E00001-UP (MACHINE) POWERED BY C13 Engine


Parts pump Caterpillar catalog:

1832824 PUMP GP-FUEL PRIMING
3116, 320B, 322B L, 322B LN, 322C, 322C FM, 324D, 324D L, 324D LN, 325B L, 325C, 325D, 325D L, 326D L, 328D LCR, 329D, 329D L, 329D LN, 330C, 330C L, 330D L, 345C, 345C L, 345C MH, 345D, 365C, 365C L,...
3520205 PUMP GP-WATER
14M, 16M, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 621H, 621K, 623H, 623K LRC, 627H, 627K LRC, 725, 730, 730C, 966H, 972H, 980C, 980K, 980K HLG, C11, C13, C13 XQ350, CX31-C13I, D8...
3520206 PUMP GP-WATER
14M, 16M, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 725, 730, 966H, 972H, 980C, C11, C13, CX31-C13I, D8N, R1600H, R1700G, RM-300, TH35-C11I, W345C MH
2285811 PUMP GP-WATER
14M, 16M, 345C, 345C L, 345C MH, 345D L, 725, 730, 966H, 972H, C11, C13, CX31-C13I, R1700G, RM-300, TH35-C13I, W345C MH
2335220 PUMP GP-ENGINE OIL
140H, 143H, 14H, 14M, 160H, 163H, 16H, 16M, 3176, 3176B, 3176C, 3196, 345B, 345B II, 345B II MH, 345B L, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 365B, 365B II, 365B L, 572R II, 6...
3848612 PUMP GP-FUEL TRANSFER
14M, 24M, 3406E, 3456, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 3512, 365C, 365C L, 365C L MH, 374D L, 374F L, 385B, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L, 5090B, 583T, 5...
1832823 PUMP AS-FUEL PRIMING
120H, 120H NA, 135H, 135H NA, 3114, 3116, 320B, 320D GC, 320D L, 322B L, 322B LN, 322C, 322C FM, 323D L, 324D, 324D L, 324D LN, 325B L, 325C, 325D, 325D L, 326D L, 328D LCR, 329D, 329D L, 329D LN, 330...
7T8890 PUMP AS WASHER
120M, 120M 2, 12M, 140M, 140M 2, 14M, 160M, 160M 2, 16M, 215B, 215C, 215D, 219D, 225, 225D, 227, 229, 229D, 231D, 235B, 235C, 235D, 245, 245B, 245D, 311B, 311D LRR, 312, 312B L, 312C L, 312D, 312D L, ...
2288133 PUMP AS
345C, 345D, 345D L, 349D, 349D L
2455557 PUMP AS
345C, 345D, 345D L, 349D, 349D L, 349E
4433872 PUMP GP-TRANSMISSION
416E, 420D, 420E, 420F, 422E, 428F, 430E, 430F, 432E, 432F, 434E, 450F
2686729 PUMP GP-PISTON
1090, 1190, 1190T, 1290T, 511, 521, 522, 532, TK711, TK721, TK722, TK732
2624419 PUMP GP-PISTON
533, 543, HA770, HA870, HA871, TK370, TK371, TK380, TK381
1116841 PUMP GP-GEAR
69D, 769D, 771D, 773D, 773E, 773F, 773G, 773G LRC, 773G OEM, 775D, 775E, 775F, 775G, 775G LRC, 775G OEM
3082287 PUMP GP-ENGINE OIL
226B, 226B3, 232B, 242B, 247B, 247B3, 257B, 3024C, C2.2
3469705 PUMP GP-PISTON
2470C, 2570C, 2670C, 553C, 563C, 573C
1769781 PUMP GP-GEAR
725C, 730C, 735, 735B, 740, 740B, D350E II, D400E II
2976998 PUMP GP-PISTON
C15, C18, CX31-C15I, CX31-C18I, CX35-C18I, CX35-P800, TH35-C15I
2976999 PUMP GP-HYDRAULIC
C11, C13, C15, C18, C9, C9.3, CX31-C13I, CX31-C15I, CX31-C18I, CX31-C9I, CX35-C18I, CX35-P800, TH31-E61, TH35-C11I, TH35-C13I, TH35-C15I
2976995 PUMP GP-HYDRAULIC
C11, C13, C15, C18, C9, C9.3, CX31-C13I, CX31-C18I, CX31-C9I, CX35-C18I, CX35-P800, TH31-E61, TH35-C11I, TH35-C13I
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.