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Caterpillar C12 Engine & Powertrain For Sale

Shop new, used, and remanufactured Caterpillar C12 Engine & Powertrain on MyLittleSalesman.com . Compare active listings with prices from $9 to $5,000. Sellers include River City Truck Parts, Vriens Truck Parts, Holst Truck Parts, and more. Filter by condition, price, or year to find the Caterpillar C12 that fits your job.
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   Belt Tensioners (5)    Cam Followers (11)    Cam Gears (2)    Camshafts (4)    Crankshafts (11)    Cylinder Heads (15)    Engine Accessory Drives (1)    Engine Air Compressors (5)    Engine Blocks / Cylinder Blocks (6)    Engine Brackets (21)    Engine Brakes / Jake Brakes (28)    Engine Control Modules (ECM) (86)    Engine Cores (18)    Engine Covers (8)    Engine Gears (11)    Engine Harmonic Balancers (9)    Engine Head Assemblies (1)    Engine Head Bolts (1)    Engine Miscellaneous Parts (176)    Engine Mounts (27)    Engine Oil Coolers (18)    Engine Oil Dipsticks (2)    Engine Oil Pans (10)    Engine Oil Pickup Tubes (1)    Engine Oil Pumps (16)    Engine Plumbing (1)    Engine Rods (9)    Engine Seals (1)    Engine Thermostat Housings (3)    Engine Valve Trains (8)    Engine Wiring Harnesses (5)    Front Engine Covers (26)    Idler Gears (1)    Intake Manifolds (28)    Manifolds (1)    Pistons & Rod Parts (10)    Rocker Arms (29)    Timing Covers (12)    Timing Gears (18)    Turbo Parts (5)    Turbochargers / Superchargers (32)    Valve Covers (40)    Water Pumps (13)
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Showing 1 - 25 of 735 Listings

1 - 25 of 735 listings
1 - 25 of 735 listings
New Caterpillar C12 Front Main Exciter Sleeve Seal, Part # 336038

New Caterpillar C12 Front Main Exciter Sleeve Seal, Part # 336038

$17.91 USD
NEW FRONT MAIN EXCITER SLEEVE SEAL. FITS MULTIPLE C12 APPLICATIONS. REPLACES 144-1275. PICTURE REFERENCE # 19, Serial#: 1441275 336038, Core Charge: 0, Casting#: 144-1275 336038
ConditionNew
Part Number336038
Stock Number336038
MLS Number14545326
CategoryEngine Miscellaneous Parts
Last Updated8/15/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Caterpillar C12 Crankshaft for a 2003 Peterbilt 385

Caterpillar C12 Crankshaft for a 2003 Peterbilt 385

$1,500 USD
USED C12 CRANKSHAFT PART# 116-1072 INSPECTED BY MACHINE SHOP (HOT TANKED/ MAGNAFLUX/POLISHED) DOES HAVE A LIGHT SCRATCH IN ONE JOURNAL (SEE PICTURES), Serial#: 2KS84312
ConditionUsed
Fits To Make(s)Peterbilt
Fits To Model(s)385
Will Fit Year(s)2003
Part Number116-1072
Stock Number122223-31
MLS Number14542976
CategoryCrankshafts
Last Updated8/14/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Caterpillar C12 Engine Control Module ECM ECU 212-9450 117-4212-02 10R-4085

Caterpillar C12 Engine Control Module ECM ECU 212-9450 117-4212-02 10R-4085

$2,000 USD
(GOOD USED/ TESTED) Caterpillar C12 OEM Diesel Engine Control Module, ECM, ECU, for sale!!! Part #:212-9450 ; Supersession Part #: 124-2673, 115-3055, 212-9450, 10R-4085, 117-4212-02; Stock...
ConditionUsed
Part Number212-9450
Stock NumberE4642
MLS Number14537116
CategoryEngine Control Modules (ECM)
Last Updated8/12/2026
Location
Hialeah, FL, US
Sold By
JJ Rebuilders Inc.
(844) 385-___  SHOW
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JJ Rebuilders Inc.
Caterpillar C12 Engine Control Module (ECM) for a Kenworth T2000

1999 Caterpillar C12 Engine Control Module (ECM) for a Kenworth T2000

$1,495 USD
(USED) CAT C12 HP: 410 Ref# 145-7805-02 TESTED GOOD. CAT C12 ECM P/N 145-7805-02 WILL BE TESTED BEFORE SHIPPING
ConditionUsed
Fits To Make(s)Kenworth
Fits To Model(s)T2000
Part Number145-7805-02
Stock Number25804650
MLS Number13617824
CategoryEngine Control Modules (ECM)
Last Updated7/30/2026
Location
Spencer, IA, US
Sold By
Vander Haag's Inc.
(855) 370-___  SHOW
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Vander Haag's Inc.
Caterpillar C12 Water Pump

Caterpillar C12 Water Pump

$273.50 USD
NEW Water Pump Assembly CaterpillarC10 / C12 application, check part #'s for compatibility., Serial#: 381800 0R-0705 0R-8767 100-6944 10R-3709 153-8053 176-7000 352-2077, Core Charge: 0,...
ConditionNew
Part Number381808 0R-0705 0R-8767 100-6944 10R-3709 153-8053 176-7000 352-2077
Stock Number381808
MLS Number10529419
CategoryWater Pumps
Last Updated6/24/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
New Caterpillar C10/C12/C13 Rear Main Seal Kit, Part # 336016 7C1728 5332152 2264757

New Caterpillar C10/C12/C13 Rear Main Seal Kit, Part # 336016 7C1728 5332152 2264757

$44.99 USD
NEW C10 C12 C13 REAR MAIN SEAL KIT., Serial#: 336016, Core Charge: 0, Casting#: 336016
ConditionNew
Fits To Make(s)Universal
Fits To Model(s)Universal
Part Number336016 7C1728 5332152 2264757
Stock Number336016
MLS Number13483106
CategoryEngine Miscellaneous Parts
Last Updated6/13/2026
Location
Ucon, ID, US
Sold By
Holst Truck Parts
(833) 541-___  SHOW
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Holst Truck Parts
Caterpillar C12 Engine Control Module (ECM)

Caterpillar C12 Engine Control Module (ECM)

$1,025 USD
--- Nous livrons partout au Canada aux États-Unis. We ship anywhere in Canada USA--- - Stock: 523ECM - Caterpillar 3126 (70 pins) - Engine Control Module - P/N : 206-2700-02 - No core...
ConditionUsed
Part Number206-2700-02
Stock Number523ECM
MLS Number14423883
CategoryEngine Control Modules (ECM)
Last Updated6/13/2026
Location
Beauceville, QC, Canada
Sold By
Camions Gilbert
(888) 595-___  SHOW
NUMBERCall Seller
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Camions Gilbert
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