Welcome to WSTPARTS   Kontaktieren Sie uns: | cat@wstparts.com

CAT Parts Manual

Browse official CAT parts manuals by equipment model. Find part numbers, names and quantities for your machine.

Official CAT Parts Manual Library

WSTPARTS hosts the official Caterpillar parts book data for 40 popular models — excavators (320D, 336D, 345C…), engines (C15, C18, 3512…), loaders and more. Browse by model, then by system (engine, hydraulic, cooling, electrical…), to find the exact part number for your machine.

Each part entry includes the CAT part number, name, quantity and manual page reference. Send us any part number for a genuine / reman / OEM quote within 24 hours.

How to Use the Parts Manual

  • Select your machine model (e.g. CAT 336D).
  • Choose the system that matches the faulty part (hydraulic, engine…).
  • Copy the part number and click "Inquiry" — or send us the list for a bulk quote.
🚜 Smart Quote
Online Support · Live Chat ● Online
🕐 Mon-Sat 9:00-18:00 (GMT+8)
We're online — chat with us now
🔓 Register to unlock free · 1 min
Self-service · part no. / model → price & stock
Batch search · many part nos. at once, export Excel, no daily cap
💬 Add us on WeChat / WhatsApp — send photos & invoice lists, we reply faster.
Call
Enter to send · Shift+Enter for new line