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Caterpillar® C12 Engine Parts

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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	TRUCK: SN:2KS99492 ARR: 2338973	TRUCK: SN:2KS	TRUCK: SN:1YN11201-UP	TRUCK: SN:1YN1-11200	MARINE: C1Z00727	TRUCK: SN:MBL1-UP	Gen. Set - SN: BDL02194	TRUCK: SN:2KS93957
Arrangement	STRAIGHT EDGE HEAD GSK	SCALLOPED EDGE HEAD GSK	STRAIGHT EDGE HEAD GSK	SCALLOPED EDGE HEAD GSK	247-9907	STRAIGHT EDGE HEAD GSK	203-7099	225-2263
Liner w/o Sealing Ring	469-5315 × 6 pcs	469-5315 × 6 pcs	469-5315 × 6 pcs	469-5315 × 6 pcs	469-5315 × 6 pcs	469-5315 × 6 pcs	469-5315 × 6 pcs	469-5315 × 6 pcs
Cyl. Liner Sealing Ring Kit	437-1409 × 6 pcs	437-1409 × 6 pcs	437-1409 × 6 pcs	437-1409 × 6 pcs	437-1409 × 6 pcs	437-1409 × 6 pcs	437-1409 × 6 pcs	437-1409 × 6 pcs
Piston	144-2948 × 6 pcs	144-2948 × 6 pcs	197-9328 × 6 pcs	197-9328 × 6 pcs	197-9328 × 6 pcs	197-9374 × 6 pcs	144-2948 × 6 pcs	144-2948 × 6 pcs
Skirt	238-2712 × 6 pcs	238-2712 × 6 pcs	238-2712 × 6 pcs	238-2712 × 6 pcs	238-2712 × 6 pcs	238-2712 × 6 pcs	238-2712 × 6 pcs	238-2712 × 6 pcs
Top Ring	197-9341 × 6 pcs	197-9341 × 6 pcs	197-9341 × 6 pcs	197-9341 × 6 pcs	197-9341 × 6 pcs	197-9341 × 6 pcs	197-9341 × 6 pcs	197-9341 × 6 pcs
Intermediate Ring	216-8570 × 6 pcs	216-8570 × 6 pcs	216-8570 × 6 pcs	216-8570 × 6 pcs	216-8570 × 6 pcs	216-8570 × 6 pcs	216-8570 × 6 pcs	216-8570 × 6 pcs
Oil Ring	238-2704 × 6 pcs	238-2704 × 6 pcs	238-2704 × 6 pcs	238-2704 × 6 pcs	238-2704 × 6 pcs	238-2704 × 6 pcs	238-2704 × 6 pcs	238-2704 × 6 pcs
Pin Piston	197-9251 × 6 pcs	197-9251 × 6 pcs	197-9251 × 6 pcs	197-9251 × 6 pcs	197-9251 × 6 pcs	197-9251 × 6 pcs	197-9251 × 6 pcs	197-9251 × 6 pcs
Piston Pin Bushing	115-2972 × 6 pcs	115-2972 × 6 pcs	—	—	115-2972 × 6 pcs	115-2972 × 6 pcs	115-2972 × 6 pcs	115-2972 × 6 pcs
Connecting rod, bolt	115-2973 × 12 pcs	115-2973 × 12 pcs	—	—	115-2973 × 12 pcs	115-2973 × 12 pcs	115-2973 × 12 pcs	115-2973 × 12 pcs

Engine Bearings

Machine / Serial No	TRUCK: SN:2KS99492 ARR: 2338973	TRUCK: SN:2KS	TRUCK: SN:1YN11201-UP	TRUCK: SN:1YN1-11200	MARINE: C1Z00727	TRUCK: SN:MBL1-UP	Gen. Set - SN: BDL02194	TRUCK: SN:2KS93957
Arrangement	STRAIGHT EDGE HEAD GSK	SCALLOPED EDGE HEAD GSK	STRAIGHT EDGE HEAD GSK	SCALLOPED EDGE HEAD GSK	247-9907	STRAIGHT EDGE HEAD GSK	203-7099	225-2263
Main Bearing Set, STD	243-6717 × 1 pcs	243-6717 × 1 pcs	243-6717 × 1 pcs	243-6717 × 1 pcs	243-6717 × 1 pcs	243-6717 × 1 pcs	243-6717 × 1 pcs	243-6717 × 1 pcs
Main Bearing, Plain - Std	211-0587 / 211-0588 × 4 / 3 pcs	211-0587 / 211-0588 × 4 / 3 pcs	211-0587 / 211-0588 × 4 / 3 pcs	211-0587 / 211-0588 × 4 / 3 pcs	211-0587 / 211-0588 × 4 / 3 pcs	211-0587 / 211-0588 × 4 / 3 pcs	211-0587 / 211-0588 × 4 / 3 pcs	211-0587 / 211-0588 × 4 / 3 pcs
Thrust Washer - Std	246-3144 × 2 pcs	246-3144 × 2 pcs	246-3144 × 2 pcs	246-3144 × 2 pcs	246-3144 × 2 pcs	246-3144 × 2 pcs	246-3144 × 2 pcs	246-3144 × 2 pcs
Main Bearing, Plain - U/S	128-0400 / 128-0382 × 4 / 3 pcs	128-0400 / 128-0382 × 4 / 3 pcs	128-0400 / 128-0382 × 4 / 3 pcs	128-0400 / 128-0382 × 4 / 3 pcs	128-0400 / 128-0382 × 4 / 3 pcs	128-0400 / 128-0382 × 4 / 3 pcs	128-0400 / 128-0382 × 4 / 3 pcs	128-0400 / 128-0382 × 4 / 3 pcs
Main Bearing, Plain - U/S	128-0401 / 128-0383 × 4 / 3 pcs	128-0401 / 128-0383 × 4 / 3 pcs	128-0401 / 128-0383 × 4 / 3 pcs	128-0401 / 128-0383 × 4 / 3 pcs	128-0401 / 128-0383 × 4 / 3 pcs	128-0401 / 128-0383 × 4 / 3 pcs	128-0401 / 128-0383 × 4 / 3 pcs	128-0401 / 128-0383 × 4 / 3 pcs
Rod Bearing - Std	292-0484 × 6 pcs	292-0484 × 6 pcs	292-0484 × 6 pcs	292-0484 × 6 pcs	292-0484 × 6 pcs	292-0484 × 6 pcs	292-0484 × 6 pcs	292-0484 × 6 pcs
Rod Bearing - O/S	128-0395 × A/R pcs	128-0395 × A/R pcs	128-0395 × A/R pcs	128-0395 × A/R pcs	128-0395 × A/R pcs	128-0395 × A/R pcs	128-0395 × A/R pcs	128-0395 × A/R pcs
Rod Bearing - O/S	128-0396 × A/R pcs	128-0396 × A/R pcs	128-0396 × A/R pcs	128-0396 × A/R pcs	128-0396 × A/R pcs	128-0396 × A/R pcs	128-0396 × A/R pcs	128-0396 × A/R pcs
Camshaft Bearing	216-5584 × 1 pcs	216-5584 × 1 pcs	216-5584 × 1 pcs	216-5584 × 1 pcs	216-5584 × 1 pcs	216-5584 × 1 pcs	216-5584 × 1 pcs	216-5584 × 1 pcs
Camshaft Bearing	216-5585 × 1 pcs	216-5585 × 1 pcs	216-5585 × 1 pcs	216-5585 × 1 pcs	216-5585 × 1 pcs	216-5585 × 1 pcs	216-5585 × 1 pcs	216-5585 × 1 pcs
Camshaft Bearing	216-5583 × 5 pcs	216-5583 × 5 pcs	216-5583 × 5 pcs	216-5583 × 5 pcs	216-5583 × 5 pcs	216-5583 × 5 pcs	216-5583 × 5 pcs	216-5583 × 5 pcs

Valvetrain Components

Machine / Serial No	TRUCK: SN:2KS99492 ARR: 2338973	TRUCK: SN:2KS	TRUCK: SN:1YN11201-UP	TRUCK: SN:1YN1-11200	MARINE: C1Z00727	TRUCK: SN:MBL1-UP	Gen. Set - SN: BDL02194	TRUCK: SN:2KS93957
Arrangement	STRAIGHT EDGE HEAD GSK	SCALLOPED EDGE HEAD GSK	STRAIGHT EDGE HEAD GSK	SCALLOPED EDGE HEAD GSK	247-9907	STRAIGHT EDGE HEAD GSK	203-7099	225-2263
Valve, Exhaust	133-7029 × 12 pcs	133-7029 × 12 pcs	133-7029 × 12 pcs	133-7029 × 12 pcs	157-0671 × 12 pcs	133-7029 × 12 pcs	133-7029 × 12 pcs	133-7029 × 12 pcs
Valve, Intake	192-9213 × 12 pcs	7E-9578 × 12 pcs	7E-9578 × 12 pcs	7E-9578 × 12 pcs	192-9213 × 12 pcs	192-9213 × 12 pcs	192-9213 × 12 pcs	192-9213 × 12 pcs
Rotocap Assembly	7E-7977 × 24 pcs	7E-7977 × 24 pcs	7E-7977 × 24 pcs	7E-7977 × 24 pcs	7E-7977 × 24 pcs	7E-7977 × 24 pcs	7E-7977 × 24 pcs	7E-7977 × 24 pcs
Valve Guide (STD)	100-8150 × 24 pcs	100-8150 × 24 pcs	100-8150 × 24 pcs	100-8150 × 24 pcs	144-2904 × 24 pcs	100-8150 × 24 pcs	100-8150 × 24 pcs	100-8150 × 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
Valve Spring - Inner	224-4441 × 24 pcs	224-4441 × 24 pcs	224-4441 × 24 pcs	224-4441 × 24 pcs	224-4441 × 24 pcs	224-4441 × 24 pcs	224-4441 × 24 pcs	224-4441 × 24 pcs
Valve Spring - Outer	332-2152 × 24 pcs	332-2152 × 24 pcs	332-2152 × 24 pcs	332-2152 × 24 pcs	332-2152 × 24 pcs	332-2152 × 24 pcs	332-2152 × 24 pcs	332-2152 × 24 pcs
Valve Stem Seal	—	163-2478 × 24 pcs	—	—	—	—	—	163-2478 × 24 pcs
Intake Seat, STD	179-9454 × 12 pcs	4N-5893 × 12 pcs	138-2006 × 12 pcs	4N-5893 × 12 pcs	138-2006 × 12 pcs	179-9454 × 12 pcs	179-9454 × 12 pcs	179-9454 × 12 pcs
Exhaust Seat STD	179-9453 × 12 pcs	133-6997 × 12 pcs	179-9453 × 12 pcs	133-7030 × 12 pcs	138-2005 × 12 pcs	179-9453 × 12 pcs	179-9453 × 12 pcs	179-9453 × 12 pcs

Fuel, Lubricating & Cooling Systems

Machine / Serial No	TRUCK: SN:2KS99492 ARR: 2338973	TRUCK: SN:2KS	TRUCK: SN:1YN11201-UP	TRUCK: SN:1YN1-11200	MARINE: C1Z00727	TRUCK: SN:MBL1-UP	Gen. Set - SN: BDL02194	TRUCK: SN:2KS93957
Arrangement	STRAIGHT EDGE HEAD GSK	SCALLOPED EDGE HEAD GSK	STRAIGHT EDGE HEAD GSK	SCALLOPED EDGE HEAD GSK	247-9907	STRAIGHT EDGE HEAD GSK	203-7099	225-2263
Oil Pump	233-5220 × 1 pcs	233-5220 × 1 pcs	233-5220 × 1 pcs	233-5220 × 1 pcs	233-5220 × 1 pcs	233-5220 × 1 pcs	233-5220 × 1 pcs	233-5220 × 1 pcs
Water Pump	352-2077 × 1 pcs	352-2077 × 1 pcs	352-2077 × 1 pcs	352-2077 × 1 pcs	352-2077 × 1 pcs	352-2077 × 1 pcs	352-2077 × 1 pcs	352-2077 × 1 pcs
Thermostat	247-7133 × 1 pcs	247-7133 × 1 pcs	247-7133 × 1 pcs	247-7133 × 1 pcs	247-7133 × 1 pcs	247-7133 × 2 pcs	247-7133 × 1 pcs	247-7133 × 2 pcs
Fuel Pump	116-5428 × 1 pcs	116-5428 × 1 pcs	116-5428 × 1 pcs	384-8612 × 1 pcs	388-7285 × 1 pcs	222-9839 × 1 pcs	388-7285 × 1 pcs	388-7285 × 1 pcs
Injection Unit	212-3463 × 6 pcs	212-3463 × 6 pcs	212-3466 × 6 pcs	212-3466 × 6 pcs	212-3468 × 6 pcs	223-5328 × 6 pcs	236-4086 × 6 pcs	212-3463 × 6 pcs
Injector Sleeve	116-1102 × 6 pcs	116-1102 × 6 pcs	116-1102 × 6 pcs	116-1102 × 6 pcs	116-1102 × 6 pcs	116-1102 × 6 pcs	116-1102 × 6 pcs	116-1102 × 6 pcs

Gaskets & Seals

Machine / Serial No	TRUCK: SN:2KS99492 ARR: 2338973	TRUCK: SN:2KS	TRUCK: SN:1YN11201-UP	TRUCK: SN:1YN1-11200	MARINE: C1Z00727	TRUCK: SN:MBL1-UP	Gen. Set - SN: BDL02194	TRUCK: SN:2KS93957
Arrangement	STRAIGHT EDGE HEAD GSK	SCALLOPED EDGE HEAD GSK	STRAIGHT EDGE HEAD GSK	SCALLOPED EDGE HEAD GSK	247-9907	STRAIGHT EDGE HEAD GSK	203-7099	225-2263
Cylinder Head Gasket	187-3307 × 1 pcs	187-3306 × 1 pcs	187-3307 × 1 pcs	187-3306 × 1 pcs	187-3307 × 1 pcs	187-3307 × 1 pcs	187-3307 × 1 pcs	187-3307 × 1 pcs
Central & Lower Gasket Set	322-0610 × 1 pcs	417-3776 × 1 pcs	417-3776 × 1 pcs	417-3776 × 1 pcs	529-8717 × 1 pcs	243-4780 × 1 pcs	316-7146 × 1 pcs	322-0610 × 1 pcs
Front Structure Gasket Kit	572-2738 × 1 pcs	417-4316 × 1 pcs	417-4316 × 1 pcs	572-2737 × 1 pcs	573-6272 × 1 pcs	417-8843 × 1 pcs	316-6708 × 1 pcs	572-2738 × 1 pcs
Rear Structure Gasket Kit	226-6620 × 1 pcs	226-6620 × 1 pcs	226-6620 × 1 pcs	226-6620 × 1 pcs	529-8735 × 1 pcs	226-6620 × 1 pcs	448-5044 × 1 pcs	226-6620 × 1 pcs
Oil Cooler & Lines Gasket Kit	316-6709 × 1 pcs	394-9182 × 1 pcs	394-9182 × 1 pcs	394-9182 × 1 pcs	530-2869 × 1 pcs	243-4690 × 1 pcs	316-6709 × 1 pcs	316-6709 × 1 pcs
Single Cylinder Head Gasket Set	322-2929 × 1 pcs	316-4416 × 1 pcs	417-4374 × 1 pcs	417-3703 × 1 pcs	551-6978 × 1 pcs	417-4374 × 1 pcs	417-4374 × 1 pcs	322-2929 × 1 pcs
Turbocharger Installation Gasket Set	320-6200 × 1 pcs	320-6200 × 1 pcs	394-9183 × 1 pcs	394-9183 × 1 pcs	530-2884 × 1 pcs	394-9183 × 1 pcs	394-9183 × 1 pcs	320-6200 × 1 pcs
Fuel System Gasket Set	319-8081 × 1 pcs	224-5843 × 1 pcs	224-5843 × 1 pcs	224-5843 × 1 pcs	—	243-4770 × 1 pcs	243-5142 × 1 pcs	319-8081 × 1 pcs
Single Fuel Injector Gasket Kit	224-5797 × 6 pcs	224-5797 × 6 pcs	224-5797 × 6 pcs	224-5797 × 6 pcs	224-5797 × 6 pcs	224-5797 × 6 pcs	224-5797 × 6 pcs	224-5797 × 6 pcs
Water Pump Installation Gasket Set	315-6714 × 1 pcs	147-3781 × 1 pcs	147-3781 × 1 pcs	147-3781 × 1 pcs	323-5232 × 1 pcs	315-6714 × 1 pcs	315-6714 × 1 pcs	315-6714 × 1 pcs
Seal GP Crankshaft Rear	226-4757 × 1 pcs	226-4757 × 1 pcs	226-4757 × 1 pcs	226-4757 × 1 pcs	226-4757 × 1 pcs	226-4757 × 1 pcs	285-4074 × 1 pcs	226-4757 × 1 pcs
Seal GP Crankshaft Front	226-4755 × 1 pcs	126-0110 × 1 pcs	226-4755 × 1 pcs	126-0110 × 1 pcs	226-4755 × 1 pcs	226-4755 × 1 pcs	226-4755 × 1 pcs	126-0110 × 1 pcs

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