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Part Number
4N4394
GEAR
Category: — | Fits: C18, C15, C9, 3406E
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Fits Equipment Models (4)
3406E C15 C18 C9

CAT 4N4394 GEAR fits Caterpillar 3406E, C15, C18, C9. Available for order at WSTPARTS.

Replaceable OEM Parts (Compatible Models)
No OEM replacement record. Contact us
135-3086-8288
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CAT 4N4394 GEAR for C18 Caterpillar Part - WSTPARTS

Need a dependable Drivetrain part for your Caterpillar C18, C15 and C9 machine? The 4N4394 GEAR from WSTPARTS is manufactured to OEM-grade tolerances. It is categorized under Drivetrain. Every unit is fitment-verified before dispatch, backed by factory-direct pricing and warranty coverage. Contact our parts team with your machine serial number for a fast quotation.

4N4394 GEAR for Caterpillar C18 — Genuine & OEM Replacement Part

WSTPARTS supplies genuine and high-quality OEM replacement GEAR (Part # 4N4394). Designed for CAT C18, C15, C9, 3406E equipment.

Compatible Models

Key Features

  • ✔ 100% compatible with CAT C18, C15, C9, 3406E
  • ✔ Meets Caterpillar original quality and performance standards
  • ✔ Genuine CAT parts with anti-counterfeit label | OEM alternatives with warranty
  • ✔ Available for order, contact for lead time

Specifications

Part Number (MPN)4N4394
Product NameGEAR
BrandCAT
Applicable ModelsC18, C15, C9, 3406E
Weight0.95 kg
ConditionNew (Genuine / OEM Equivalent)
Warranty12 Months

FAQ

Is 4N4394 the right part for my machine?
Match the part number on your old part, or send us your equipment serial number — WSTPARTS verifies fitment free of charge for CAT C18.

Genuine vs OEM replacement — what is the difference?
Genuine CAT parts carry an anti-counterfeit label. OEM equivalents are built to the same specifications, bench-tested and supplied with full warranty at a better price.

Stock, shipping and warranty?
Lead time confirmed on request; we quote the fastest available option. Every order is covered by a 12-month warranty.

📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com

Frequently Asked Questions
What equipment does 4N4394 fit?
CAT 4N4394 GEAR fits 4 Caterpillar equipment models including 3406E, C15, C18, C9, verified against Caterpillar parts manuals and confirmed orders.
Is 4N4394 a genuine CAT part?
WSTPARTS supplies genuine CAT parts as well as quality-tested aftermarket alternatives. Contact our sales team for current availability and options for 4N4394.
How can I order 4N4394?
Add 4N4394 to the inquiry cart or contact us with your equipment model and serial number. We ship worldwide and support part number verification.

Parts DiagramC15

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C15 · ELECTRICAL AND STARTING SYSTEM · 136-2640 CAT parts diagram
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14N-4371COVER AS-HOUSING
27M-7410PLUG-PIPE
34N-4375BALL BEARING
44N-4377PLATE-REAR END
54N-4383HOUSING-MOTOR
64N-4390WASHER-THRUST (0.797X1.50X0.125-IN THK)
74N-4391KEY-GEAR
84N-4387CASE AS-GEAR
94N-4388WASHER-EJECTION
104N-4394GEAR-DRIVE (45-TEETH)
115F-8651BALL BEARING
124N-4397COLLAR-DRIVE SHAFT
133P-0653SEAL-O-RING
144N-4403SPRING-RING
154N-4405CLUTCH AS-DRIVE
164N-4421SHAFT-DRIVE
174N-4400RING-SHIFT
184N-4402SPACER (2.156X2.375X0.188-IN THK)
194N-4386RETAINER-PINION
204N-4413PINION-ROTOR
219B-9774BALL BEARING
224N-4384GASKET-GEAR CASE
234N-4382PLATE-FRONT END
244N-4381ROTOR
254N-4376GASKET-HOUSING COVER
265L-4035RING-RETAINING (EXTERNAL)
278F-8544BOLT (3/8-16X6.25-IN)
287B-2742BOLT (1/4-20X1.25-IN)
295P-0537WASHER-HARD (7.2X14.5X2-MM THK)In stock
304N-4409DEFLECTOR AS
318T-6763PLUG-PIPE
324N-4378CYLINDER
336D-3787BEARING-ROLLER
344N-4392COVER AS-CASE
354N-4393SEAL-LIP TYPE
366J-2244SEAL-O-RING
376V-1179SEAL-O-RING
384N-4379DOWEL-CYLINDER
394N-4380KIT-VANE (AIR STARTING MOTOR)
Quality Guarantee
Warranty Period 12 months / under normal use
After-sales Response Response within 24h, solution within 48h
Return Policy Return or exchange within 7 days of receipt (original packaging required)
Quality Inspection 100% inspected before shipment; inspection report on request
Technical Support Free installation guidance; engineer support online
📦 Packaging
Packing Method Genuine or neutral packaging available
Protective Packing Shock-proof & moisture-proof materials
Part Number Label Individual part number label
Customization Custom carton marking supported
After-Sales Service Process
01
Contact Us
Describe issue / send photos
02
Engineer Review
Solution within 24h
03
Confirm Solution
Return, repair or replacement
04
Case Closed
Send-back / re-ship / refund
Apply for After-Sales Service
Online Support ● Online
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✉️Emailcat@wstparts.com
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