An oil cooler’s primary function is to cool the engine lubricating oil, which in turn lowers the temperature of critical engine components, primarily the engine bearings. When oil exceeds normal operating temperatures, it loses viscosity and lubricating properties; when this happens, the oil begins to break down and deteriorate very quickly. Oil coolers extend the life of the engine oil and the longevity of your engine. Oil coolers should always be replaced after a catastrophic engine failure or when rebuilding an engine.

Oil Coolers Units

Part No.ApplicationDescription
1008008CORE GP-ENGINE OIL COOLER5230, 5230B, 785C, 789, 789B, 789C, 793, 793B, 793C, 793D, 994, 994D, 994F
1154517CORE AS-ENGINE OIL COOLER140H, 143H, 14H, 160H, 163H, 16H, 3176C, 3196, 345B, 345B II, 345B II MH, 345B L, 365B, 365B II, 365B L, 480, 572R II, 65E, 725, 730, 75D, 75E, 814F, 815F, 816F, 85D, 85E, 95E, 966G II, 972G II, C-10
1245142CORE AS-OIL COOLER3508, 3508B, 3508C, 5130, 5130B, 776C, 776D, 777, 777B, 777C, 777D, 854G, 992G, D11N, D11R, G3508, G3508B, PM3508
1330125CORE AS-ENGINE OIL COOLER24M, 3406B, 3406C, 3406E, 3456, 385B, 5090B, 583T, 587T, 651B, 657B, 770, 772, 824C, 824G, 824G II, 824H, 825G II, 825H, 826G II, 826H, 834G, 834H, 836G, 836H, 980G, 980G II, 980H, 986H, 988G, 988H
2005975CORE GP-OIL COOLER773G, 773G LRC, 773G OEM, 775G, 775G LRC, 775G OEM, 776C, 776D, 777, 777B, 777C, 777D, 777G, 784C, 785, 785B, 785C, 785D, AD30, AD45B, AD55
2237962CORE AS-OIL COOLER365C, 365C L, 365C L MH, 374D L, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L, 621B, 621G, 623G, 627F, 627G, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 657E, 657G, 735, 735B, 740, 740B, 824K, 825K
2368745CORE AS-OIL COOLER14M, 16M, 345C, 345C L, 345C MH, 345D, 345D L, 725, 730, 966H, 972H, 980C, C11, C13, CX31-C13I, D8N, R1700G, RM-300, TH35-C11I, TH35-C13I, W345C MH
3793436CORE AS-OIL COOLER14M, 16M, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 349E, 349E L, 349E L HVG, 349E L VG, 349F L, 621H, 621K, 623H, 623K, 623K LRC, 627H, 627K, 627K LRC, 725, 730, 730C, 966H, 972H
1W5200CORE AS3606, 3608, 3612, 3616, C280-12, C280-16, C280-6, C280-8, G3606, G3606B, G3608, G3612, G3616
2W7590COOLER A OILGENERAL
4N2388COOLER GP-ENGINE OIL24H, 3126, 3412, 3412C, 3412D, 3412E, 651E, 657E, 772B, 773B, 773D, 775B, 775D, 990, 990 II, 992C, 992D, C30, C32, CG137-12, D10N, D10R, D9L, G3412, G3412C, PM3412, PR-1000, PR-750B, SCT673, SPS342
4P3754CORE AS-OIL COOLER3176, 3176B, 3176C, 75, 75C, 85C, C-10, C-12, R1700 II
4W0419CORE GP-OIL COOLER3408, 3412, 3412C, 844, 844H, 854G, 854K, 990, 990 II, 990H, 992C, 992D, 992G, 992K, C27, C32, D44B, D550B, SCT673, SPS342, SPT342, TH48-E70
4W4980CORE GP-OIL COOLER3512, 3512B, 3512C, 777D, 784B, 784C, 785, 785B, 785C, 785D, G3512, G3512B, PM3512, SPF343, SPS343, SPT343
4W5405CORE GP-OIL COOLER3512, 3516, 3516B, 3516C, 3616, 789, 994, G3516, G3516B, G3520C, G3608, G3612, PM3516, PMG3516, PP3516
4W5549CORE AS-OIL COOLER D398B, G398
4W5550CORE AS.D379, D379B, G379
4W5551CORE AS-OIL COOLERD399
4W6428CORE AGENERAL
5H1093CORE ASSEM.D342, D342C, D8H
6N9213CORE A OILGENERAL
6N9220CORE ASSEM.768B
6N9653CORE ASSEM.D8K
6N9654CORE ASSEM.594H, D9H
6N9670CORE A OILGENERAL
7C0145CORE AS-OIL COOLER24H, 3412, 3412C, 3412D, 3412E, 374F L, 385C, 390F L, 5110B, 651E, 657E, 657G, 770G, 770G OEM, 772G, 772G OEM, 773B, 773D, 773E, 773F, 773G, 773G LRC, 773G OEM, 775B, 775D, 775E, 775F, 775G, 775G
7C3039CORE AS-OIL COOLER16G, 16H NA, 245, 3406B, 3406C, 3406E, 3408, 3408B, 3408C, 3408E, 3456, 375, 375 L, 5080, 578, 583R, 587R, 589, 621E, 621F, 621G, 623E, 623F, 623G, 627B, 627E, 627F, 627G, 631D, 631E, 631G
7N0098CORE A OILGENERAL
7N0110CORE AS-ENGINE OIL COOLER143H, 14H NA, 160H ES, 160H NA, 163H NA, 1673C, 235C, 235D, 330 FM L, 330 L, 3304, 3304B, 3306, 3306B, 3306C, 330B, 350, 627B, 627E, 627F, 637E, 639D, 65, 65C, 816B, 966F II, 966G, 970F, 972G, 973
7N0113CORE AS-OIL COOLER578, 725, 730, D8K
7N0125CORE ASSEM.D353C, G353D
7N0165CORE AS-OIL COOLER120G, 12G, 12H, 12H ES, 12H NA, 130G, 140G, 140H, 140H ES, 140H NA, 143H, 14G, 14H NA, 160G, 160H, 160H ES, 160H NA, 163H NA, 215, 215B, 235, 235B, 3304, 3304B, 3306, 3306B, 515, 517, 518C, 525, 527
7N6668CORE A OILGENERAL
7N6677CORE A OILGENERAL
7W1713CORE GP-OIL COOLER3406B, 3406C, 3406E, 772B, 773B, 773D, 775B, 775D, 784C, 785C, 785D, 789C, 789D, C-15, C-16, C15
7W2164CORE AS-OIL COOLER3406, 3406B, 3408, 623F, 627B, SS-250

Internal Oil Cooler Units

Part No.DescriptionApplication
1252970CORE AS-OIL COOLER318C, 319C, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321C, 321D LCR, 323D L, 323D LN, 323D
1328590CORE ASGENERAL
1328597CORE AS-OIL COOLER3204, 3208, 613C
2256817COOLER-OIL3054C, 3054E, 312D2, 312D2 GC, 312D2 L, 313D2, 313D2 LGP, 315C, 318D2 L, 414E, 416D, 416E, 416F, 420D, 420E, 420F, 422E, 422F, 424D, 428D, 428E, 428F, 430D, 430E, 430F, 432D, 432E, 432F, 434E, 434F
2490832COOLER-OIL3056, 3056E
2674743CORE AS-ENGINE OIL COOLER120H, 120H ES, 120H NA, 120K, 120K 2, 12K, 12M, 135H, 135H NA, 140G, 140K, 140K 2, 140M, 160K, 30/30, 3116, 3126, 3126B, 3126E, 320 L, 320B, 322B L, 322B LN, 322C, 322C FM, 324D, 324D FM
2775774CORE AS-OIL COOLERC13, TH35-C13T
2782468CORE AS-OIL COOLER3126, 3126B, 3126E, C7
2817039COOLER-OIL12M, 320D GC, 320D L, 320D2, 320D2 GC, 320D2 L, 323D L, 323D2 L, 559, 613G, 924H, 924HZ, 928H, 928HZ, 938H, AP-600D, AP-655D, AP1000E, AP1055E, BG600D, BG655D, C6.6, C7.1, CP-56, CP-64, CP-76, CS-56
2939367CORE AS-OIL COOLER12H, 12M 2, 12M 3, 12M 3 AWD, 140M, 140M 2, 140M 3, 140M 3 AWD, 160M, 160M 2, 160M 3 AWD, 2290, 2390, 2391, 2491, 2590, 330C, 330C FM, 330C L, 330C MH, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D
3541274COOLER GP-ENGINE OIL3054C, 3054E, 312D2, 312D2 GC, 312D2 L, 313D2, 313D2 LGP, 315C, 318D2 L, 414E, 416E, 416F, 420D, 420E, 420F, 422E, 422F, 428D, 428E, 428F, 430E, 430F, 432E, 432F, 434E, 434F, 442D, 442E, 444E, 444F
5I7563ELEMENT320 L, 320N
7W1762CORE AS-OIL COOLER227, 3208, CB-614, CS-551, PS-500

Radiator Oil Coolers

Part No.DescriptionApplication
1047366CORE AS-COOLER235
1189954CORE AS320B, 320B L
1415974CORE AS-OIL COOLER322B LN, 325B L
2235121CORE AS-RADIATOR993K, 994F, 994H
2316877CORE AS-O CLRGENERAL
2653563CORE AS-OIL COOLER320C, 320C FM
3128338CORE AS-OIL COOLER320D, 320D FM, 320D GC, 320D L, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 321D LCR, 323D L, 323D LN, 323D SA, 323D2 L
4W1533CORE AS-OIL COOLER950B
6I4186CORE AS-RADIATOR5130, 5130B
7Y1363CORE AS-OIL COOLER330, 330 FM L, 330 L
7Y1960CORE AS-OIL COOLER320, 320 L, 320N
8N2602CORE ASSEMBLY RADIATORD8K

Transmission Oil Coolers

Part No.DescriptionApplication
1011741CORE AS-OIL COOLER834K, 836K, 988K, D8L, D9N, D9R, D9T
1023514CORE AS527, D5H, D5H XL, D5HTSK II
1052077CORE AS-OIL COOLER936F
1058651CORE GP-XMSN OIL COOLER834B, 836, 988B, 988F, 988F II
1275537CORE AS235B, 572R, 769C, 769D, 771C, 771D, 814B, 814F, 815B, 815F, 816B, 816F, 950F, 950F II, 960F, 966D, 966F, 966F II, 970F, 972G, AD40, AD45, AE40, AE40 II, C-9, C9, C9.3, CX31-C9I, D6H, D6H XL, D6H XR
1355577CORE AS-POWER TRAIN OIL COOLER3406E, 651B, 657B, 824C, 824G, 824G II, 824H, 825G II, 825H, 826G II, 826H, 980G, 980G II, 980H, C-15, R2900G, R3000H
1437397CORE AS-HYDRAULIC OIL COOLER120H, 120H ES, 120H NA, 135H, 135H NA, 140G, 572R, 572R II, D5E, D6R, D6R II, D6R III, D6T, D7R, D7R II
1459283CORE AS-TRANSMISSION COOLER24M, 651B, 834G, 834H, 836G, 836H, 986H, 988G, 988H, C-15, C-16, C15, C18, CX31-C15I, CX31-C18I, CX35-P800
1551216CORE AS966F, 966F II, 966G, 972G
1668598CORE AS572R II, D7R II, D8N
1757453CORE AS-TRANSMISSION COOLER120M, 120M 2, 12H, 12M, 12M 2, 12M 3, 12M 3 AWD, 140H, 140M, 140M 2, 140M 3, 140M 3 AWD, 143H, 14H, 160H, 160M, 160M 2, 160M 3, 160M 3 AWD, 163H, 16H
2813581CORE AS-HYDRAULIC OIL COOLER345B II, 345B L
1W0156CORE AS-OIL COOLER3408, 3408C, 3408E
2W7933CORE AS-OIL COOLER16G, 814B, 815B, 816B, 966D
4P7731CORE GP-OIL COOLER3406, 3406B, 3406C, 3406E, 3456, 735, 740, C-12, C-15, C-16, C15, C18, CX31-C15I, D350E II, D400E II, HT400, TH35-C15I
4W5056CORE GP-OIL COOLER776C, 776D, 777, 777B, 777C, 777D, 777F, 784B, 785, 785B, 785C, 785D, 789, 789B, 789C
4W5363CORE GP-OIL COOLER3306, 3306B, 572G, 587R, 611, 615, 615C, D10, D11N, D11R, D7G, D7G2, R1300, R1300G
4W5412CORE GP-OIL COOLERD10N, D10R, D10T, D9L
4W7382CORE AS-OIL COOLER980C, 980F, 980G, PM-465
4W9822CORE GP-OIL COOLER3176C, 3196, 578, 583R, 583T, 587R, 587T, 980C, C-10, C-12, C11, C13, C15, C18, CX31-C13I, D8N, D8R, D8R II, D8T, PL83, PL87, R1600, R1600G, R1600H, R1700G, TH35-C11I, TH35-C13I
6N9215CORE AS-OIL COOLER3306, 3306B, 528, 621E, 637D, 639D, 966D, D25C, D300B, D30C, D350C, D35C, D6C, D7F
7C6461CORE GP-OIL COOLERD10N, D10R
7C8858CORE GP-OIL COOLER3406E, D250B, D250D, D250E, D25D, D300B, D300D, D300E, D350E, D400E, D40D
7E2660CORE GP-OIL COOLER3406, 3406B, 3406C, 3406E, 3456, 735, 740, C-12, C-15, C-16, C15, C18, CX31-C15I, D350E II, D400E II, HT400, TH35-C15I
7N0128CORE AS-OIL COOLER120G, 12G, 130G, 140G, 143H, 14G, 14H NA, 160G, 3304, 3304B, 3306, 3306B, 920, D4D, D5H, D6
7N3521CORE AS-OIL COOLERD6D, D6E, D6G, D6G2 LGP, D6G2 XL
7W0205CORE AS-OIL COOLER3176B, 3408, 583K, 589, 770, 770G, 770G OEM, 772, 772G, 772G OEM, 793D, 824C, 824G, 825G, 826C, 826G, 980G, 988B, D8L, PM-565, PM-565B
7W6459CORE GP-OIL COOLER621B, 621E, 621F, 621G, 623E, 623F, 623G, 627E, 627F, 627G, 631D, 631E, 631G, 633E II, 637D, 637E, 637G, 657E, 657G

Torque Converter Oil Coolers

Part No.DescriptionApplication
1414109CORE GP-OIL COOLER24H, 3512, 3512B, 3512C, 3516C, 651E, 657E, 657G, 69D, 768C, 769C, 769D, 771D, 772B, 773B, 773D, 773E, 773F, 775B, 775D, 775E, 775F, 776C, 776D, 777, 777C, 777D, 777F, 777G, 784B, 785, 785B, 785C
1873523CORE AS-OIL COOLER345D L, 627H, 627K, 627K LRC, 735B, 740B, 814F, 814F II, 815F, 815F II, 816F, 816F II, 824K, 825K, 826K, 966G II, 966H, 966K, 972G II, 972H, 972K, C9.3, D6R, D6R II, D6R III, D6R STD, D6T, D6T LGP, D6
1S0172CORE ASSEM.D8H
1W0220CORE AGENERAL
1W0223CORE AGENERAL
1W0225CORE AGENERAL
6N9211CORE AGENERAL
6N9514CORE ASSEM.651E, 657E, 769C, 777, D9H
6N9752CORE AGENERAL

Hydraulic Oil Coolers

Part No.DescriptionApplication
1437397CORE AS-HYDRAULIC OIL COOLER120H, 120H ES, 120H NA, 135H, 135H NA, 140G, 572R, 572R II, D5E, D6R, D6R II, D6R III, D6T, D7R, D7R II
2316877CORE AS-O CLRGENERAL
2653563CORE AS-OIL COOLER320C, 320C FM
2813581CORE AS-HYDRAULIC OIL COOLER345B II, 345B L
3128338CORE AS-OIL COOLER320D, 320D FM, 320D GC, 320D L, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 321D LCR, 323D L, 323D LN, 323D SA, 323D2 L
2W9978CORE AS-OIL COOLER12H, 12H ES, 12H NA, 140G, 140H, 140H ES, 140H NA, 143H, 160H, 160H ES, 160H NA, 163H NA, 1673C, 3176B, 3176C, 3196, 3304, 3306, 3306C, 518C, 578, 583R, 589, 65C, 75, 75C, 75D, 85C, 85D, C-10, C-12
7Y1961CORE AS320 L, 320N
9Y1962CORE AS-HYDRAULIC OIL COOLER928F, 938F, IT28F, IT38F

Specialty Oil Coolers

Part No.DescriptionApplication
2451361COOLER AS-OIL226B, 226B3, 232B, 242B, 247B, 247B3, 257B, 3024, 3024C, C1.5, C2.2, CB-334E, CB24B
2451372COOLER AS-OIL3054, 3054B, 416B, 416D, 420D, 424D, 428B, 428D, 430D, 432D, 438D, 442D, CB-534C, CB-535B, CP-433C, CS-431C, CS-433C, PF-290B, PS-200B, PS-360B, TH103, TH62, TH63, TH82, TH83

Komatsu® Oil Coolers

Part No.DescriptionApplication
20Y-03-21121OIL COOLER ASS'Y KOMATSUBR350JG, PC200, PC200SC, PC210, PC220, PC230
6743-61-2210CORE, COOLER KOMATSUPC300, PC300HD, PC300LL, PC350, PC350HD, PC350LL, SA6D114E, SAA6D114E, WA320, WA380, WA430

* Other part no. not included in the list are available. Please contact your sales representative if you have any questions. Part Numbers are used for reference purposes only. Komatsu® is the registered trademark of Komatsu Ltd