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Part Number
3S3074
SEAL O RIN
Category: —
List Price
$7.38
Stock Status Available (Contact for Inquiry)
Fits Equipment Models (1)

CAT 3S3074 SEAL O RIN fits Caterpillar 3512. Available for order at WSTPARTS.

Direct Replacement Parts (Compatible Models)
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135-3086-8288
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CAT 3S3074 SEAL O RIN Caterpillar Part - WSTPARTS

3S3074 SEAL O RIN — Genuine CAT & Replacement Part

WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement SEAL O RIN (Part # 3S3074). Designed for CAT Caterpillar equipment.

Key Features

  • ✔ 100% compatible with CAT matching models
  • ✔ Meets Caterpillar original quality and performance standards
  • ✔ Genuine CAT lines: New Genuine / Cat Reman / Cat Classic | OEM-equivalent direct replacements
  • ✔ Available for order, contact for lead time

Specifications

Part Number (MPN)3S3074
Product NameSEAL O RIN
BrandCAT
Weight0.05 kg
ConditionNew (Genuine CAT / OEM-equivalent direct replacement)
Warranty12 Months

Where This Part Fits

Every row below is a real listing of 3S3074 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
3512 SERVICE EQUIPMENT AND SUPPLIES 201-1519 p.1501
3512 SERVICE EQUIPMENT AND SUPPLIES 436-1478 p.1506
3512 SERVICE EQUIPMENT AND SUPPLIES 436-1478 p.1508

System Notes — SERVICE EQUIPMENT AND SUPPLIES

This group covers the equipment and consumables used to service the machine rather than to run it: filter wrenches and service tools, drain and fill hardware, grease fittings and couplers, sight gauges, sampling valves, and the small hardware that makes routine maintenance possible without improvising. Items here are replaced when they no longer seal, no longer hold a setting, or when a stripped fitting turns a ten-minute service job into a two-hour one. Keeping the correct part number on hand matters more than the unit price, because a missing grease coupler usually means a missed lube point.

FAQ

Is 3S3074 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 CAT vs direct replacement — what is the difference?
Genuine CAT covers three factory lines: New Genuine, Cat Reman (core exchange with core charge) and Cat Classic (brand-new economy line). OEM-equivalent direct replacements are non-CAT parts; grade and warranty are confirmed in the quotation.

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

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

Frequently Asked Questions
What equipment does 3S3074 fit?
CAT 3S3074 SEAL O RIN fits 1 Caterpillar equipment model including 3512, verified against Caterpillar parts manuals and confirmed orders.
Where is 3S3074 listed in the Caterpillar parts manual?
3S3074 is listed in the Caterpillar parts manual under 3512, SERVICE EQUIPMENT AND SUPPLIES, group 201-1519, page 1501.
How can I order 3S3074?
Add 3S3074 to the inquiry cart, or send us your machine model and serial number — we verify the part number before dispatch.

Parts Diagram

100%
3512 · SERVICE EQUIPMENT AND SUPPLIES · 436-1478 CAT parts diagram
Scroll to zoom · Drag to pan
Sel 0
12S-1251GASKET (INTAKE MANIFOLD)
24H-7869GASKETIn stock
36L-1694GASKET
47N-3049GASKET
57N-3368GASKET (REAR)
67N-4320GASKET
74B-8407GASKET-COPPER
81S-4810GASKET-OIL DRAIN
91S-6595GASKET-OIL SUPPLY
103K-0360SEAL-O-RINGIn stock
113S-3074SEAL-O-RING
125F-9657SEAL-O-RINGIn stock
136V-3348SEAL-O-RING
147X-4805SEAL-O-RING FOR A LIST OF RELATED PARTS THAT REQUIRED FOR THE ENGINE REBUILD TO THE KIT CONSISST, PLEASE VISIT HTTPS://DEALER.CAT.COM/RELATED ****FLYWEEL HOUSING GASKET IS NOT INCLUDED IN THIS KIT. CATERPILLAR RECOMMENDS USING LOCTITE HI-TEMP FLANGE SEALA
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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Return, repair or replacement
04
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