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Part Number
1Y0684
HOSE A
Category: —
List Price
$46.39
Stock Status Available (Contact for Inquiry)
Fits Equipment Models (1)
3406C

CAT 1Y0684 HOSE A fits Caterpillar 3406C. Available for order at WSTPARTS.

Replaceable OEM Parts (Compatible Models)
No OEM replacement record. Contact us
135-3086-8288
WeChat: 135-3002-9789 / 135-3086-8288
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CAT 1Y0684 HOSE A Caterpillar Part - WSTPARTS

1Y0684 HOSE A — Genuine & OEM Replacement Part

WSTPARTS supplies genuine and high-quality OEM replacement HOSE A (Part # 1Y0684). Designed for CAT Caterpillar equipment.

Key Features

  • ✔ 100% compatible with CAT matching models
  • ✔ 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)1Y0684
Product NameHOSE A
BrandCAT
Weight0.59 kg
ConditionNew (Genuine / OEM Equivalent)
Warranty12 Months

Where This Part Fits

Every row below is a real listing of 1Y0684 in the Caterpillar parts manual: the machine it is published under, the system it belongs to, the group number and the manual page. Use it to confirm the part against your own parts book before ordering.

Machine System Group No. Manual Page
3406C BASIC ENGINE 001-7043 p.316

System Notes — BASIC ENGINE

The basic engine group covers the core structure and internals: cylinder block, cylinder head, pistons, rings, liners, connecting rods, crankshaft, bearings, camshaft and the gasket sets that seal them. These parts determine compression, oil pressure and power output. They wear gradually — rings lose tension, bearings show copper, liners glaze — and the first signs are usually blow-by from the breather, rising oil consumption, or a knock that gets louder as the engine warms. Replacing a basic engine part is a planned overhaul decision rather than a roadside fix, so matching the exact part number and serial number range matters more here than anywhere else on the machine.

FAQ

Is 1Y0684 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.

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 1Y0684 fit?
CAT 1Y0684 HOSE A fits 1 Caterpillar equipment model including 3406C, verified against Caterpillar parts manuals and confirmed orders.
Where is 1Y0684 listed in the Caterpillar parts manual?
1Y0684 is listed in the Caterpillar parts manual under 3406C, BASIC ENGINE, group 001-7043, page 316.
How can I order 1Y0684?
Add 1Y0684 to the inquiry cart, or send us your machine model and serial number — we verify the part number before dispatch.

Parts Diagram

100%
3406C · BASIC ENGINE · 001-7043 CAT parts diagram
Scroll to zoom · Drag to pan
Sel 0
18M-0755ADAPTER
21N-3523HOSE AS
31Y-0684HOSE AS
49M-6522CONNECTOR
53B-7744FITTING (CLOSE)
68L-6557CONNECTOR
79M-4584CONNECTOR
84N-4935HOSE AS
92B-0858PLUG-PIPEIn stock
105B-8979TEE-PIPE
114P-2446HOSE AS
122M-9780SEAL-O-RINGIn stock
137W-5499ELBOW
142B-2695BOLT (5/16-18X0.875-IN)
159M-1974WASHER-HARD (8.8X16X2-MM THK)
168M-7065GASKET (AIR INLET)In stock
172N-1287ELBOW-FLARED
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
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03
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04
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