Genuine OEM Caterpillar (CAT) Parts & Components

Genuine OEM Caterpillar (CAT) Parts & Components

Keep your "Yellow Iron" performing at peak capacity with our premium selection of genuine OEM Caterpillar parts. As a cornerstone of our Shop by Brand collection, this inventory features authentic overstock components engineered to meet the exact metallurgical and performance specifications of CAT excavators, dozers, loaders, and industrial engines.

Mission-Critical Hardware & Components

Our Caterpillar inventory is stocked with high-demand, factory-original parts to minimize your machine downtime:

  • Hydraulics & Hardware: High-pressure hydraulic valve blocks, precision sleeve bearings, pivot pins, and bucket wear plates.
  • G.E.T. (Ground Engaging Tools): Genuine CAT bucket tooth locking pins, sidebar protector pins, and hammerless tip retainers (J550 and K170 series).
  • Engine & Electrical: C7 fuel injector wiring harnesses, oil pressure sending units, temperature senders, and heavy-duty cogged V-belts.
  • Maintenance Essentials: Factory-original O-ring seals, seal kits, horn assemblies, and rotary latches.

Why Choose Original CAT Overstock?

By opting for factory-original Caterpillar components over generic "will-fit" aftermarket alternatives, you ensure your heavy equipment maintains its legendary breakout force, structural integrity, and durability. Protect your investment, ensure job site safety, and avoid accelerated wear with authentic components at overstock prices.

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21189909 Genuine Volvo OEM Catwalk Plate
21189909 Genuine Volvo OEM Catwalk Plate

Volvo 21189909 VNL Aluminum Deck Plate Catwalk (New Factory Take-off)

Regular price $154.36
Sale price $154.36 Regular price $0.00
Unit price
43012UL72 Weatherhead Crimp Fitting

43012UL72 Weatherhead Crimp Fitting

Regular price $29.97
Sale price $29.97 Regular price
Unit price
Weatherhead 43020U620 Hydraulic Crimp Hose Fitting – High Pressure

Weatherhead 43020U620 Hydraulic Crimp Hose Fitting – High Pressure

Regular price $42.18
Sale price $42.18 Regular price $120.00
Unit price
Genuine Caterpillar 5K-1787 CAT O-Ring Seal (5.33 x 183.52mm 75A NBR)
Genuine Caterpillar 5K-1787 CAT O-Ring Seal (5.33 x 183.52mm 75A NBR)

Genuine Caterpillar 5K-1787 CAT O-Ring Seal (5.33 x 183.52mm 75A NBR)

Regular price $6.95
Sale price $6.95 Regular price $9.99
Unit price
6D-9157 Genuine Caterpillar (CAT) O-Ring Seal
6D-9157 Genuine Caterpillar (CAT) O-Ring Seal

6D-9157 Genuine Caterpillar (CAT) O-Ring Seal

Regular price $4.99
Sale price $4.99 Regular price $11.27
Unit price
Genuine CAT 107-3378 Grooved Pin | J550 Bucket Tooth OEM Surplus with OEM Parts label
Genuine CAT 107-3378 Grooved Pin | J550 Bucket Tooth OEM Surplus with OEM Parts label

Genuine CAT 107-3378 Grooved Pin G.E.T. – OEM Caterpillar J550 Series Bucket Tooth Locking Pin

Regular price $14.95
Sale price $14.95 Regular price $22.00
Unit price
Genuine CAT 133-0738 Pin
Genuine CAT 133-0738 Pin

133-0738 Genuine CAT Bucket Sidebar Protector Pin G.E.T.

Regular price $16.24
Sale price $16.24 Regular price $24.00
Unit price
Genuine CAT 232-0170 Retainer GET 
| K170 Series Hammerless Tip Retainer 
| Fits 374, 385, 390, 992
Genuine CAT 232-0170 Retainer GET 
| K170 Series Hammerless Tip Retainer 
| Fits 374, 385, 390, 992

Genuine CAT 232-0170 Retainer GET | K170 Series Hammerless Tip Retainer | Fits 374, 385, 390, 992

Regular price $38.49
Sale price $38.49 Regular price $75.00
Unit price
Genuine CAT 107-8559 Caterpillar 1078559 Heavy Duty J550 Tip Pin Retaine
Genuine CAT 107-8559 Caterpillar 1078559 Heavy Duty J550 Tip Pin Retaine

Genuine CAT 107-8559 Caterpillar 1078559 Heavy Duty J550 Tip Pin Retainer

Regular price $9.89
Sale price $9.89 Regular price $20.00
Unit price
CAT C7 Fuel Injector Wiring Harness | Caterpillar 222-5917 | Fits 3126B, 3126E Engines
CAT C7 Fuel Injector Wiring Harness | Caterpillar 222-5917 | Fits 3126B, 3126E Engines

CAT C7 Fuel Injector Wiring Harness | Caterpillar 222-5917 | Fits 3126B, 3126E Engines

Regular price $42.63
Sale price $42.63 Regular price $95.00
Unit price
Hydraulic 90° Union Elbow | #16 Male JIC (1-5/16-12) x #12 Male JIC (1-1/16-12) | 2500-16-12

Hydraulic 90° Union Elbow | #16 Male JIC (1-5/16-12) x #12 Male JIC (1-1/16-12) | 2500-16-12

Regular price $24.37
Sale price $24.37 Regular price $38.00
Unit price
T501ML | Environmentally Sealed Mom-On/Off/Mom-On Toggle Switch NEW

T501ML | Environmentally Sealed Mom-On/Off/Mom-On Toggle Switch NEW

Regular price $19.39
Sale price $19.39 Regular price $0.00
Unit price
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