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Caterpillar® C18 Engine Parts

C7 · C7.1 · C7.2 · C9 · C9.3 · C10 · C11 · C12 · C13 · C15 · C18 · C27 · C32

Tables are for reference. Send us your engine serial number before ordering and we will confirm the correct part. Click a part number to open its page.

Cylinder Components

Machine / Serial No	Gen. Set - SN: STH1-UP	988H-SN: BXY-04567	Gen. Set - SN: WGH-01101	Marine Engine - SN: T2P01329	D9T-SN: RJS1-UP	Marine Engine - SN: DSE05137	Gen. Set - SN: ELM02183	772G - SN: TXW01122	836H - SN: RHX	390FL - SN: TXW03337	D9T - SN:TWG	745 - SN: 3FS
Arrangement	Multiple (STM1-UP)	281-6453	241-0021	320-9800	205-8603		382-3737	367-0639		467-2588	389-6000	488-6144
Liner w/o Sealing Ring	556-0701 × 6 pcs	556-0701 × 6 pcs	556-0701 × 6 pcs	556-0701 × 6 pcs	556-0701 × 6 pcs	556-0701 × 6 pcs	556-0701 × 6 pcs	556-0701 × 6 pcs	556-0701 × 6 pcs	556-0701 × 6 pcs	556-0701 × 6 pcs	556-0701 × 6 pcs
Cyl. Liner Sealing Ring Kit	348-3295 × 6 pcs	348-3295 × 6 pcs	348-3295 × 6 pcs	348-3295 × 6 pcs	348-3295 × 6 pcs	348-3295 × 6 pcs	348-3295 × 6 pcs	348-3295 × 6 pcs	348-3295 × 6 pcs	348-3295 × 6 pcs	348-3295 × 6 pcs	348-3295 × 6 pcs
Piston	319-6715 × 6 pcs	368-7818 × 6 pcs	368-7816 × 6 pcs	368-7817 × 6 pcs	329-4511 × 6 pcs	368-8179 × 6 pcs	319-6715 × 6 pcs	368-7816 × 6 pcs	368-7818 × 6 pcs	368-7816 × 6 pcs	368-7818 × 6 pcs	368-7816 × 6 pcs
Top Ring	223-9159 × 6 pcs	223-9159 × 6 pcs	223-9159 × 6 pcs	223-9159 × 6 pcs	223-9159 × 6 pcs	223-9159 × 6 pcs	223-9159 × 6 pcs	223-9159 × 6 pcs	223-9159 × 6 pcs	223-9159 × 6 pcs	223-9159 × 6 pcs	223-9159 × 6 pcs
Intermediate Ring	238-2707 × 6 pcs	238-2707 × 6 pcs	238-2707 × 6 pcs	238-2707 × 6 pcs	238-2707 × 6 pcs	238-2707 × 6 pcs	238-2707 × 6 pcs	238-2707 × 6 pcs	238-2707 × 6 pcs	238-2707 × 6 pcs	238-2707 × 6 pcs	238-2707 × 6 pcs
Oil Ring	246-5659 × 6 pcs	246-5659 × 6 pcs	246-5659 × 6 pcs	246-5659 × 6 pcs	246-5659 × 6 pcs	246-5659 × 6 pcs	246-5659 × 6 pcs	246-5659 × 6 pcs	246-5659 × 6 pcs	246-5659 × 6 pcs	246-5659 × 6 pcs	246-5659 × 6 pcs
Pin Piston	180-7350 × 6 pcs	524-5565 × 6 pcs	524-5565 × 6 pcs	180-7350 × 6 pcs	180-7350 × 6 pcs	524-5565 × 6 pcs	180-7350 × 6 pcs	524-5565 × 6 pcs	524-5565 × 6 pcs	524-5565 × 6 pcs	524-5565 × 6 pcs	524-5565 × 6 pcs
Retainer Pin Piston	230-2569 × 12 pcs	250-2940 × 12 pcs	230-2569 × 12 pcs	230-2569 × 12 pcs	230-2569 × 12 pcs	250-2940 × 12 pcs	230-2569 × 12 pcs	230-2569 × 12 pcs	250-2940 × 12 pcs	230-2569 × 12 pcs	250-2940 × 12 pcs	230-2569 × 12 pcs
Piston Pin Bushing	229-6259 × 6 pcs	229-6259 × 6 pcs	229-6259 × 6 pcs	229-6259 × 6 pcs	229-6259 × 6 pcs	229-6259 × 6 pcs	229-6259 × 6 pcs	229-6259 × 6 pcs	229-6259 × 6 pcs	229-6259 × 6 pcs	229-6259 × 6 pcs	229-6259 × 6 pcs
Connecting rod, bolt	213-3217 × 24 pcs	213-3217 × 24 pcs	213-3217 × 24 pcs	213-3217 × 24 pcs	213-3217 × 24 pcs	213-3217 × 24 pcs	213-3217 × 24 pcs	213-3217 × 24 pcs	213-3217 × 24 pcs	213-3217 × 24 pcs	213-3217 × 24 pcs	213-3217 × 24 pcs

Engine Bearings

Machine / Serial No	Gen. Set - SN: STH1-UP	988H-SN: BXY-04567	Gen. Set - SN: WGH-01101	Marine Engine - SN: T2P01329	D9T-SN: RJS1-UP	Marine Engine - SN: DSE05137	Gen. Set - SN: ELM02183	772G - SN: TXW01122	836H - SN: RHX	390FL - SN: TXW03337	D9T - SN:TWG	745 - SN: 3FS
Arrangement	Multiple (STM1-UP)	281-6453	241-0021	320-9800	205-8603		382-3737	367-0639		467-2588	389-6000	488-6144
Main Bearing Set, STD	243-6718 × 1 pcs	243-6718 × 1 pcs	243-6718 × 1 pcs	243-6718 × 1 pcs	243-6718 × 1 pcs	243-6718 × 1 pcs	243-6718 × 1 pcs	243-6718 × 1 pcs	243-6718 × 1 pcs	243-6718 × 1 pcs	243-6718 × 1 pcs	243-6718 × 1 pcs
Main Bearing, Plain - Std	317-8766 × 7 pcs	317-8766 × 7 pcs	317-8766 × 7 pcs	317-8766 × 7 pcs	317-8766 × 7 pcs	317-8766 × 7 pcs	317-8766 × 7 pcs	317-8766 × 7 pcs	317-8766 × 7 pcs	317-8766 × 7 pcs	317-8766 × 7 pcs	317-8766 × 7 pcs
Thrust Washer - Std	253-1752 × 2 pcs	253-1752 × 2 pcs	253-1752 × 2 pcs	253-1752 × 2 pcs	253-1752 × 2 pcs	253-1752 × 2 pcs	253-1752 × 2 pcs	253-1752 × 2 pcs	253-1752 × 2 pcs	253-1752 × 2 pcs	253-1752 × 2 pcs	253-1752 × 2 pcs
Main Bearing, Plain - U/S	4W-5698 × 7 pcs	4W-5698 × 7 pcs	4W-5698 × 7 pcs	4W-5698 × 7 pcs	4W-5698 × 7 pcs	4W-5698 × 7 pcs	4W-5698 × 7 pcs	4W-5698 × 7 pcs	4W-5698 × 7 pcs	4W-5698 × 7 pcs	4W-5698 × 7 pcs	4W-5698 × 7 pcs
Main Bearing, Plain - U/S	4W-5699 × 7 pcs	4W-5699 × 7 pcs	4W-5699 × 7 pcs	4W-5699 × 7 pcs	4W-5699 × 7 pcs	4W-5699 × 7 pcs	4W-5699 × 7 pcs	4W-5699 × 7 pcs	4W-5699 × 7 pcs	4W-5699 × 7 pcs	4W-5699 × 7 pcs	4W-5699 × 7 pcs
Rod Bearing - Std	224-3246 × 6 pcs	224-3246 × 6 pcs	224-3246 × 6 pcs	224-3246 × 6 pcs	224-3246 × 6 pcs	261-3450 × 6 pcs	224-3246 × 6 pcs	224-3246 × 6 pcs	224-3246 × 6 pcs	224-3246 × 6 pcs	224-3246 × 6 pcs	224-3246 × 6 pcs
Rod Bearing - O/S	232-3235 × 6 pcs	232-3235 × 6 pcs	232-3235 × 6 pcs	232-3235 × 6 pcs	232-3235 × 6 pcs	232-3235 × 6 pcs	232-3235 × 6 pcs	232-3235 × 6 pcs	232-3235 × 6 pcs	232-3235 × 6 pcs	232-3235 × 6 pcs	232-3235 × 6 pcs
Rod Bearing - O/S	232-3236 × 6 pcs	232-3236 × 6 pcs	232-3236 × 6 pcs	232-3236 × 6 pcs	232-3236 × 6 pcs	232-3236 × 6 pcs	232-3236 × 6 pcs	232-3236 × 6 pcs	232-3236 × 6 pcs	232-3236 × 6 pcs	232-3236 × 6 pcs	232-3236 × 6 pcs
Camshaft Bearing	216-5582 × 7 pcs	216-5582 × 7 pcs	216-5582 × 7 pcs	216-5582 × 7 pcs	216-5582 × 7 pcs	216-5582 × 7 pcs	216-5582 × 7 pcs	216-5582 × 7 pcs	216-5582 × 7 pcs	216-5582 × 7 pcs	216-5582 × 7 pcs	216-5582 × 7 pcs

Valvetrain Components

Machine / Serial No	Gen. Set - SN: STH1-UP	988H-SN: BXY-04567	Gen. Set - SN: WGH-01101	Marine Engine - SN: T2P01329	D9T-SN: RJS1-UP	Marine Engine - SN: DSE05137	Gen. Set - SN: ELM02183	772G - SN: TXW01122	836H - SN: RHX	390FL - SN: TXW03337	D9T - SN:TWG	745 - SN: 3FS
Arrangement	Multiple (STM1-UP)	281-6453	241-0021	320-9800	205-8603		382-3737	367-0639		467-2588	389-6000	488-6144
Valve, Exhaust	490-7200 × 12 pcs	490-7200 × 12 pcs	490-7200 × 12 pcs	490-7200 × 12 pcs	490-7200 × 12 pcs	490-7200 × 12 pcs	490-7200 × 12 pcs	490-7200 × 12 pcs	490-7200 × 12 pcs	464-4668 × 12 pcs	490-7200 × 12 pcs	464-4668 × 12 pcs
Valve, Intake	490-7199 × 12 pcs	490-7199 × 12 pcs	490-7198 × 12 pcs	490-7198 × 12 pcs	490-7198 × 12 pcs	490-7198 × 12 pcs	490-7198 × 12 pcs	490-7198 × 12 pcs	490-7198 × 12 pcs	490-7198 × 12 pcs	490-7198 × 12 pcs	490-7198 × 12 pcs
Rotocap Assembly	186-2001 × 24 pcs	186-2001 × 24 pcs	186-2001 × 24 pcs	186-2001 × 24 pcs	186-2001 × 24 pcs	186-2001 × 24 pcs	186-2001 × 24 pcs	186-2001 × 24 pcs	186-2001 × 24 pcs	186-2001 × 24 pcs	186-2001 × 24 pcs	186-2001 × 24 pcs
Valve Guide (STD)	122-7375 × 24 pcs	122-7375 × 24 pcs	122-7375 × 24 pcs	122-7375 × 24 pcs	122-7375 × 24 pcs	122-7375 × 24 pcs	122-7375 × 24 pcs	122-7375 × 24 pcs	122-7375 × 24 pcs	122-7375 × 24 pcs	122-7375 × 24 pcs	122-7375 × 24 pcs
Valve Keeper	2A-4429 × 48 pcs	2A-4429 × 48 pcs	2A-4429 × 48 pcs	2A-4429 × 48 pcs	2A-4429 × 48 pcs	2A-4429 × 48 pcs	2A-4429 × 48 pcs	2A-4429 × 48 pcs	2A-4429 × 48 pcs	2A-4429 × 48 pcs	2A-4429 × 48 pcs	2A-4429 × 48 pcs
Valve Spring - Inner	211-3122 × 24 pcs	211-3122 × 24 pcs	211-3122 × 24 pcs	211-3122 × 24 pcs	211-3122 × 24 pcs	211-3122 × 24 pcs	211-3122 × 24 pcs	211-3122 × 24 pcs	211-3122 × 24 pcs	211-3122 × 24 pcs	211-3122 × 24 pcs	211-3122 × 24 pcs
Valve Spring - Outer	247-9908 × 24 pcs	247-9908 × 24 pcs	247-9908 × 24 pcs	247-9908 × 24 pcs	247-9908 × 24 pcs	247-9908 × 24 pcs	247-9908 × 24 pcs	247-9908 × 24 pcs	247-9908 × 24 pcs	247-9908 × 24 pcs	247-9908 × 24 pcs	247-9908 × 24 pcs
Washer - Spring Seat	6I-0928 × 24 pcs	6I-0928 × 24 pcs	6I-0928 × 24 pcs	6I-0928 × 24 pcs	6I-0928 × 24 pcs	6I-0928 × 24 pcs	6I-0928 × 24 pcs	6I-0928 × 24 pcs	6I-0928 × 24 pcs	6I-0928 × 24 pcs	6I-0928 × 24 pcs	6I-0928 × 24 pcs
Valve Stem Seal	163-2478 × 24 pcs	163-2478 × 24 pcs	163-2478 × 24 pcs	163-2478 × 24 pcs	163-2478 × 24 pcs	163-2478 × 24 pcs	163-2478 × 24 pcs	163-2478 × 24 pcs	163-2478 × 24 pcs	163-2478 × 24 pcs	163-2478 × 24 pcs	163-2478 × 24 pcs
Intake Seat, STD	280-3979 × 12 pcs	280-3979 × 12 pcs	280-3979 × 12 pcs	280-3979 × 12 pcs	280-3979 × 12 pcs	280-3979 × 12 pcs	280-3979 × 12 pcs	280-3979 × 12 pcs	280-3979 × 12 pcs	280-3979 × 12 pcs	280-3979 × 12 pcs	280-3979 × 12 pcs
Exhaust Seat STD	226-5561 × 12 pcs	226-5561 × 12 pcs	226-5561 × 12 pcs	226-5561 × 12 pcs	300-3565 × 12 pcs	226-5561 × 12 pcs	226-5561 × 12 pcs	300-3565 × 12 pcs	300-3565 × 12 pcs	300-3565 × 12 pcs	226-5561 × 12 pcs	300-3565 × 12 pcs

Fuel, Lubricating & Cooling Systems

Machine / Serial No	Gen. Set - SN: STH1-UP	988H-SN: BXY-04567	Gen. Set - SN: WGH-01101	Marine Engine - SN: T2P01329	D9T-SN: RJS1-UP	Marine Engine - SN: DSE05137	Gen. Set - SN: ELM02183	772G - SN: TXW01122	836H - SN: RHX	390FL - SN: TXW03337	D9T - SN:TWG	745 - SN: 3FS
Arrangement	Multiple (STM1-UP)	281-6453	241-0021	320-9800	205-8603		382-3737	367-0639		467-2588	389-6000	488-6144
Oil Pump	161-4113 × 1 pcs	161-4113 × 1 pcs	161-4113 × 1 pcs	161-4113 × 1 pcs	198-1508	161-4113 × 1 pcs	161-4113 × 1 pcs	161-4113 × 1 pcs	161-4113 × 1 pcs	161-4113 × 1 pcs	161-4113 × 1 pcs	161-4113 × 1 pcs
Bearing Sleeve, Oil Pump	7N-2156 × 2 pcs	7N-2156 × 2 pcs	7N-2156 × 2 pcs	7N-2156 × 2 pcs	7N-2156 × 2 pcs	7N-2156 × 2 pcs	7N-2156 × 2 pcs	7N-2156 × 2 pcs	7N-2156 × 2 pcs	7N-2156 × 2 pcs	7N-2156 × 2 pcs	7N-2156 × 2 pcs
Bearing, Oil Pump	8S-6511 × 2 pcs	8S-6511 × 2 pcs	8S-6511 × 2 pcs	8S-6511 × 2 pcs	—	8S-6511 × 2 pcs	8S-6511 × 2 pcs	8S-6511 × 2 pcs	8S-6511 × 2 pcs	8S-6511 × 2 pcs	8S-6511 × 2 pcs	8S-6511 × 2 pcs
Water Pump	336-2213 × 1 pcs	352-0211 × 1 pcs	352-0211 × 1 pcs	352-0211 × 1 pcs	336-2213 × 1 pcs	605-7489 × 1 pcs	336-2213 × 1 pcs	336-2213 × 1 pcs	336-2213 × 1 pcs	336-2213 × 1 pcs	336-2213 × 1 pcs	336-2213 × 1 pcs
Water Pump Rebuilt Kit	377-7037 × 1 pcs	377-7037 × 1 pcs	267-2839 × 1 pcs	377-7037 × 1 pcs	377-7037 × 1 pcs	377-7037 × 1 pcs	377-7037 × 1 pcs	377-7037 × 1 pcs	377-7037 × 1 pcs	377-7037 × 1 pcs	377-7037 × 1 pcs	377-7037 × 1 pcs
Thermostat	247-7133 × 2 pcs	248-5513 × 2 pcs	247-7133 × 2 pcs	248-5513 × 2 pcs	248-5513 × 2 pcs	—	247-7133 × 2 pcs	248-5513 × 2 pcs	248-5513 × 2 pcs	248-5513 × 2 pcs	248-5513 × 2 pcs	248-5513 × 2 pcs
Fuel Pump	384-8612 × 1 pcs	384-8612 × 1 pcs	384-8612 × 1 pcs	384-8612 × 1 pcs	384-8612 × 1 pcs	388-7286 × 1 pcs	384-8612 × 1 pcs	384-8612 × 1 pcs	384-8612 × 1 pcs	384-8612 × 1 pcs	384-8612 × 1 pcs	384-8612 × 1 pcs
Injection Unit	211-3028 × 6 pcs	374-0750 × 6 pcs	253-0618 × 1 pcs	253-0618 × 6 pcs	253-0616 × 6 pcs	356-1370 × 1 pcs	211-3028 × 6 pcs	291-5911 × 6 pcs	291-5911 × 6 pcs	291-5911 × 6 pcs	291-5911 × 6 pcs	291-5911 × 6 pcs
Injector Sleeve	263-4920 × 6 pcs	263-4920 × 6 pcs	263-4920 × 6 pcs	263-4920 × 6 pcs	263-4920 × 6 pcs	263-4920 × 6 pcs	263-4920 × 6 pcs	263-4920 × 6 pcs	263-4920 × 6 pcs	263-4920 × 6 pcs	263-4920 × 6 pcs	263-4920 × 6 pcs

Gaskets & Seals

Machine / Serial No	Gen. Set - SN: STH1-UP	988H-SN: BXY-04567	Gen. Set - SN: WGH-01101	Marine Engine - SN: T2P01329	D9T-SN: RJS1-UP	Marine Engine - SN: DSE05137	Gen. Set - SN: ELM02183	772G - SN: TXW01122	836H - SN: RHX	390FL - SN: TXW03337	D9T - SN:TWG	745 - SN: 3FS
Arrangement	Multiple (STM1-UP)	281-6453	241-0021	320-9800	205-8603		382-3737	367-0639		467-2588	389-6000	488-6144
Cylinder Head Gasket	359-0908 × 1 pcs	359-0908 × 1 pcs	359-0908 × 1 pcs	359-0908 × 1 pcs	359-0908 × 1 pcs	359-0908 × 1 pcs	359-0908 × 1 pcs	359-0908 × 1 pcs	359-0908 × 1 pcs	359-0908 × 1 pcs	359-0908 × 1 pcs	359-0908 × 1 pcs
Central & Lower Gasket Set	458-7275 × 1 pcs	436-3459 × 1 pcs	469-0626 × 1 pcs	493-4309 × 1 pcs	524-7153 × 1 pcs	491-7418 × 1 pcs	468-8631 × 1 pcs	436-8544 × 1 pcs	468-8631 × 1 pcs	445-2669 × 1 pcs	437-8176 × 1 pcs	445-2669 × 1 pcs
Front Structure Gasket Kit	449-6051 × 1 pcs	436-3458 × 1 pcs	468-7256 × 1 pcs	360-7477 × 1 pcs	514-9017 × 1 pcs	449-8559 × 1 pcs	514-9017 × 1 pcs	468-8558 × 1 pcs	514-9017 × 1 pcs	436-1559 × 1 pcs	436-1559 × 1 pcs	436-1559 × 1 pcs
Rear Structure Gasket Kit	449-6053 × 1 pcs	422-0925 × 1 pcs	422-0925 × 1 pcs	450-5583 × 1 pcs	435-9420 × 1 pcs	450-5583 × 1 pcs	449-8561 × 1 pcs	435-9420 × 1 pcs	234-1877 × 1 pcs	495-0213 × 1 pcs	435-9420 × 1 pcs	495-0213 × 1 pcs
Aftercooler & Lines	—	—	—	455-1617 × 1 pcs	—	—	—	—	—	—	—	—
Oil Cooler & Lines Gasket Kit	417-1742 × 1 pcs	436-3460 × 1 pcs	468-7272 × 1 pcs	455-3631 × 1 pcs	524-7229 × 1 pcs	491-7457 × 1 pcs	417-1742 × 1 pcs	435-9419 × 1 pcs	499-9145 × 1 pcs	547-6415 × 1 pcs	437-8270 × 1 pcs	547-6415 × 1 pcs
Single Cylinder Head Gasket Set	449-6054 × 1 pcs	436-8369 × 1 pcs	592-7329 × 1 pcs	455-9998 × 1 pcs	443-7407 × 1 pcs	564-1682 × 1 pcs	592-7329 × 1 pcs	549-3813 × 1 pcs	547-8086 × 1 pcs	544-1124 × 1 pcs	437-8157 × 1 pcs	544-1124 × 1 pcs
Turbocharger Installation Gasket Set	449-6055 × 1 pcs	436-3461 × 1 pcs	469-0822 × 1 pcs	360-7481 × 1 pcs	443-7408 × 1 pcs	564-1684 × 1 pcs	469-2905 × 1 pcs	435-9423 × 1 pcs	549-4827 × 1 pcs	435-9423 × 1 pcs	437-8276 × 1 pcs	435-9423 × 1 pcs
Fuel System Gasket Set	—	—	—	—	348-3290 × 1 pcs	—	—	—	—	—	—	—
Water Pump Installation Gasket Set	417-1903 × 1 pcs	435-1125 × 1 pcs	468-7363 × 1 pcs	358-0837 × 1 pcs	456-2533 × 1 pcs	358-0837 × 1 pcs	417-1903 × 1 pcs	349-1533 × 1 pcs	417-1903 × 1 pcs	456-2533 × 1 pcs	456-2533 × 1 pcs	456-2533 × 1 pcs
Single Fuel Injector Gasket Kit	248-1394 × 6 pcs	248-1394 × 6 pcs	248-1394 × 6 pcs	248-1394 × 6 pcs	248-1394 × 6 pcs	248-1394 × 6 pcs	248-1394 × 6 pcs	248-1394 × 6 pcs	248-1394 × 6 pcs	248-1394 × 6 pcs	248-1394 × 6 pcs	248-1394 × 6 pcs
Seal GP Crankshaft Rear	142-5868 × 1 pcs	142-5868 × 1 pcs	142-5868 × 1 pcs	142-5868 × 1 pcs	142-5868 × 1 pcs	142-5868 × 1 pcs	142-5868 × 1 pcs	142-5868 × 1 pcs	142-5868 × 1 pcs	142-5868 × 1 pcs	142-5868 × 1 pcs	142-5868 × 1 pcs
Seal GP Crankshaft Front	142-5867 × 1 pcs	142-5867 × 1 pcs	142-5867 × 1 pcs	142-5867 × 1 pcs	142-5867 × 1 pcs	142-5867 × 1 pcs	142-5867 × 1 pcs	142-5867 × 1 pcs	142-5867 × 1 pcs	142-5867 × 1 pcs	142-5867 × 1 pcs	142-5867 × 1 pcs

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