CAT 8T9587 SEAL for 3306 Caterpillar Part - WSTPARTS

8T9587 SEAL is a Seal component engineered for Caterpillar 3306 and 3512C machines, built to match original factory specifications. It is categorized under Seal. Every unit is fitment-verified before dispatch. Manual reference: 3306: GENERATORS, group 109-3771, page 1445; 3512C: ELECTRICAL AND STARTING SYSTEM, group 141-1809, page 246.

8T9587 SEAL for Caterpillar 3306 — Genuine CAT & Replacement Part

WSTPARTS supplies genuine CAT and OEM-equivalent direct-replacement SEAL (Part # 8T9587). Designed for CAT 3306, 3512C equipment.

Compatible Models

Key Features

• ✔ 100% compatible with CAT 3306, 3512C
• ✔ 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)	8T9587
Product Name	SEAL
Brand	CAT
Applicable Models	3306, 3512C
Weight	0.05 kg
Condition	New (Genuine CAT / OEM-equivalent direct replacement)
Warranty	12 Months

Where This Part Fits

Every row below is a real listing of 8T9587 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
3306	GENERATORS	109-3771	p.1445
3512C	ELECTRICAL AND STARTING SYSTEM	141-1809	p.246
3306	GENERATORS	109-3771	p.1448
3512C	GENERATORS	144-1826	p.408
3306	GENERATORS	109-3772	p.1452
3306	GENERATORS	109-3773	p.1454
3306	GENERATORS	109-3775	p.1457
3306	GENERATORS	109-3775	p.1460

System Notes — GENERATORS

The generators group covers the alternator end of a generator set: stator, rotor, exciter, bearings, coupling disc, terminal box and the voltage regulation hardware. It converts engine rotation into electrical output at a held voltage and frequency. Bearing wear and insulation degradation are the two long-term concerns — a bearing that starts to rumble will eventually seize and take the rotor with it, while moisture and heat slowly break down winding insulation. Parts in this group are replaced when vibration rises, when insulation resistance falls on a megger test, or when output voltage becomes unstable under load.

System Notes — ELECTRICAL AND STARTING SYSTEM

The electrical and starting system covers the battery, starter motor, alternator, wiring harness, relays, switches and the instrument panel. It carries current from the batteries to the starter to crank the engine, and from the alternator back to keep the batteries charged. Because these machines work in dust, vibration and wide temperature swings, connectors corrode, harness insulation chafes against the frame, and starter solenoids burn out from repeated short cranks. Parts in this group are usually replaced on a symptom basis — slow cranking, a dash warning, lights that dim under load, or a no-start condition traced to an open circuit.

FAQ

Is 8T9587 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 3306.

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