We can supply CAT spare parts as following:
2W-1709 2W1709 RING
8N-3102 8N3102 PISTON
6N-9915 6N9915 VALVE
6N-9916 6N9916 VALVE
2P-1262 2P1262 GUIDE
6V-2525 6V2525 KIT VG
6V-1549 6V1549 KIT C+L
8T-2466 8T2466 KIT FRONT
340-8157 3408157 Engine Control Module
357-2083/20R-1768 3572083 
444-9674 4449674 Oil Cooler
444-9673 4449673 Oil Cooler
497-3989 4973989 Thermostat Assembly
502-4903 5024903 Timing Case
342-1306 3421306 Idler Gear
371-8059 3718059 Timing Cover
373-7241 3737241 Cylinder Head Assembly
276-8134 2768134 Cylinder Head Bolt
446-7559 4467559 Rocker Box Cover
345-4132 3454132 Pipe - Fuel Inj No 1 Cyl
345-4133 3454133 Pipe - Fuel Inj No 2 Cyl
345-4135 3454135 Pipe - Fuel Inj No 3 Cyl
345-4139 3454139 Pipe - Fuel Inj No 4 Cyl
345-4141 3454141 Pipe - Fuel Inj No 5 Cyl
345-4143 3454143 Pipe - Fuel Inj No 6 Cyl
346-5616 3465616 Pipe Clip
346-5621 3465621 Pipe Clip
346-5583 3465583 Pipe Clip
359-1290 3591290 Wiring Harness
367-6803 3676803 Wiring Harness
341-8536 3418536 Sleeve
342-4969 3424969 Fuel Rail
327-8917 3278917 Relief Valve
422-4438 4224438 Gasket - Cylinder Head
425-6413 4256413 Gasket - Cylinder Head
425-6411 4256411 Gasket - Cylinder Head
256-7704 2567704 Gasket - Cyl. Head Cover
326-7289 3267289 Seal - O Ring
124-0506 1240506 Seal - O Ring
320-8617 3208617 Injector Washer
320-8616 3208616 Seal - O Ring
319-9366 3199366 Gasket - Oil Cooler
350-1028 3501028 Gasket - Oil Cooler
225-7944 2257944 Gasket - Oil Filter Head
3P-0647/228-4947 2284947(3P0647) Seal - O Ring
9N-1756 9N1756 Seal - O Ring
357-0617 3570617 Washer
278-0017 2780017 Gasket
371-7601 3717601 Gasket - Exhaust Manifold
330-4778 3304778 Gasket - Timing Case
348-9985 3489985 Gasket - Timing Case Cover
331-4400 3314400 Gasket
275-9884 2759884 Gasket
6I-4681 6I4681 Gasket
277-0118 2770118 Seal
6V-8676 6V8676 O Ring
330-3036 3303036 Gasket - Fuel Inj Pump
344-7219 3447219 Seal - O Ring
482-2162/357-8722 4822162 Gasket
 3578722 Gasket
388-7649 3887649 Gasket
353-8578 3538578 Gasket - Water Pump
6V-7238 6V7238 Shut Off Valve
321-9994 3219994 Fan Drive
277-0588 2770588 Starter Ring
356-8337 3568337 Breather Valve
358-2586 3582586 Valve
357-6475/446-5409 4465409(3576475) Lift Pump
367-4226 3674226 Solenoid
458-8496 4588496 Cooler
349-9333 3499333 Gasket
349-9332 3499332 Gasket
349-9331 3499331 Gasket - Exhaust
353-3440 3533440 Exhaust Manifold
238-8292 2388292 Screw
346-9507 3469507 Gasket
377-2854/479-5920 4795920(3772854) Valve & Mounting Gp (Nrs)
319-7840 3197840 Gasket
346-9508 3469508 Seal - O Ring
334-4932 3344932 Gasket
370-9134/380-9169 3809169(3709134) Air Filter Assembly
346-6185 3466185 T407256
468-3934 4683934 Valve Assembly
473-4586 4734586 Kit-Engine Overhaul -Major Repair
433-7629 4337629 "Kit-Engine Gasket -Rear Cover
Kit"
467-5333  4675333 Kit-Engine Gasket -Single Cylinder Head
469-9248 4699248 "Kit-Engine Gasket -Central, Lower Structure
Kit"
444-6485 4446485 Kit-Front Cover Gasket
469-0184 4690184 Kit-Oil Cooler / Lines Gasket
1R-1808 1R1808 Oil Filter
1R-0749 1R0749 Fuel Filter
423-8524 4238524 Filter Gp-Water Sep / Fuel
261-3450 2613450 
232-3235 2323235 Big End Brg Kit - U/S
232-3236 2323236 Big End Brg Kit - U/S
317-8766 3178766 Main Bearing Kit
4W-5698 4W5698 Main Bearing Kit - U/S
4W-5699 4W5699 Main Bearing Kit - U/S
4W-5700 4W5700 Main Bearing Kit - U/S
4W-5701 4W5701 Main Bearing Kit - U/S
253-1752 2531752 Thrust Washer Kit
388-9354 3889354 Piston Kit
524-5565 5245565 
250-2940 2502940 
247-6130 2476130 Piston Ring Kit
164-4187 1644187 
306-4014 3064014 
224-3245 2243245 Con Rod Assembly
229-6259 2296259 
213-3217 2133217 
219-4458 2194458 
276-4637 2764637 Piston Cooling Jet
490-7200 4907200 Exhaust Valve
490-7198 4907198 Intake Valve
341-4827 3414827 Air Temperature Sensor 
We supply original parts for Caterpillar main models, as follows:
Caterpillar Excavator:LCR,322,322B,322BL,322C,322C FM,322CL,322D,322L,322N,323D LN,323D S,323DL,324D,324D FM,324D LN,324DL,324E,324E LN,324EL,325,325B,325B LN,325BL,325C,325C FM,325CL,325D,325D FM,325DL,325L,326D2,326D2L,326DL,326F,326F LN,326FL,328D LCR,329D,329D LN,329D2,329D2L,329DL,329E,329E LN,329EL,330,330B,330B LN,330BL,330C,330CL,330D,330DL,330F,330L,336D,336DL,336E,336EL,345,345B,345BL,345C,345CL,345D,345DL,349D,349EL,350L,365BL,365CL,375,375L,385CL,390D,390FL,5080,5130,5130B,5230,992G,994,994D,E110,E110B,E120,E120B,E200B,E240,E240B,E240C,E300,E300B LC,E70,E70B,EL180,EL200B,EL240,EL240B,EL240C,EL240C LC,EL300B,M325B etc.
Caterpillar bulldozer:4P,517,527,54H,950G,950GII,960F,962G,962GII,962H,D10,D10L,D10N,D10R,D10T,D11N,D11R,D11T,D2,D3,D3B,D3B LGP,D3C,D3CLGP,D3G,D3K,D4,D4B,D4C,D4CLGP,D4D,D4E,D4G,D4H,D4H LGP,D4H XL,D4HTSK II,D4HTSK III,D4K LGP,D4K XL,D5,D5B,D5B LGP,D5C,D5C LGP,D5C XL,D5E,D5G,D5H,D5H XL,D5HTSK II,D5K,D5M,D5M LGP,D5M XL,D5N,D5N LGP,D5N XL,D6,D6 LGP,D6B,D6C,D6C LGP,D6D,D6E,D6F,D6G,D6G2 XL,D6H,D6K XL,D6M,D6M LGP,D6M XL,D6N,D6N LGP,D6N XL,D6R,D6R LGP,D6R XL,D6T,D6T LGP,D6T XL,D7C,D7E,D7F,D7G,D7G LGP,D7H,D7H LGP,D7R,D7R LGP,D7R XR,D8,D8H,D8K,D8L,D8N,D8R,D8T,D9G,D9H,D9L,D9N,D9R,D9T etc.
Caterpillar backhoe:414E,416,416B,416C,416D,416E,420,420B,420C,420D,420DIT,420E,420F,422E,424D,426,426B,426C,426D,428,428B,428C,428D,428E,430D,430E,432D,432E,434E,436II,436B,436C,438,438C,438D,442,442D,442E,446B,446D,450E,4P,517,54H,924G,924GZ,924HZ,928H,928HZ,930H,D4HTSKII,D4HTSKIII.
Caterpillar wheel loader:902,904B,908C,908H,910,910E,914G,914K,916,920,922B,924F,924G,924H,926,926A,926E,928F,928G,930,930G,930H,930R,930T,936,936E,936F,938F,938G,938H,944,950,950B,950E,950F,950G,950H,962G,962H,962M,966C,966D,966E,966F,966G,966H,966K,966R,970F,972G,972H,980B,980C,980F,980G,980H,988,988B,988C,988F,988G,988H,990,990H,992,992B,992C,992D,992G,992K,993K,994,994D,994F,G910,IT14G,IT18B,IT28B,IT28F,IT28G,IT28H,IT38,IT38F,IT38G,IT38H etc.
Caterpillar skid steer:216,226B Series 3,232B,236,236B,242B,242B Series 3,246,247B,247B II,252B,256C,257B,257D,259B3,262B,262C,267B,272C,277B,277C,279C,287B,287D,289C,289D,299C,299D,515,518,518C,525,525B,528,528B,530B,535C,545,545C,773B,773D,773E,773F,775B,775D,775E,775F,950E,FB518 etc.
Caterpillar heavy duty truck:769 770 772 773 775 777 785 789 793 797 etc.
Caterpillar generator sets:3066,3114,3116,S6K,3126,3126B,3126E,3145,3150,3160,3176,3176B,3176C,3196,3204,3208,3304,3304B,G3304,3306,3306B,3306C,G3306,3406,3406B,3406C,3406E,3408,3408B,3408C,3408E,G3408,3412,3412C,3412E,G3412,3456,3504,3504B,C32,C32B,GC32,3512,3512B,G3512,PM3512,3516,3516B,G3516,PM3516,C9,C10,C12,C15,C16,D13000,D311,D315,D318,D320,D326,D330,D333,D333C,G333,D334,D336,D337,D342,G342,D343,G343,D346,D348,G348,D349,D353,D364,D375,D379, D379B,G379,D386,D397, D398,D398B,G398
Caterpillar Engine:3066,3116,3126,3306,3406,3408,3412,C32,3512,3516,3606,3608,3612,C4.4,C6.4,C6.6,C7,C9,C10,C11,C12,C13,C15,C18,C27,C32,C175,C280
Caterpillar Gas engine:G3304,G3612,G3408C,G3606,G399,G3616,G3608,G3606B,G353D,G333C,G3408,G3408B,G342C,G379,G379A,G398,G343,G3304B,G3512B,G3306B