Great suggestions in this thread already. Adding a few thoughts from the parts supply side of the business:
The frustration Jose described about websites showing part numbers but not being reachable is unfortunately common. The root issue is that many online "suppliers" are actually just listing aggregators — they don't physically stock the parts. When you try to get specifics on shipping or compatibility, there's nobody there because they'd need to source it from somewhere else first.
What I look for in a reputable online parts supplier (for Cat or any brand):
- They have actual product photos, not just catalog renders
- You can reach a real person who can discuss compatibility and serial number ranges
- They have a physical location and have been in business for several years
- Payment options include credit card or PayPal (buyer protection)
- They can provide tracking on shipments
For Cat specifically, CTP (Costex Tractor Parts) has been in the aftermarket game for decades and maintains real inventory. ConEquip is solid too as mentioned above.
The general principle that works across all brands is finding suppliers who specialize. Brand-focused suppliers tend to have deeper technical knowledge than generalists. For example, at VMP Spares (vmpspares.com) we focus specifically on Volvo CE equipment — 13,000+ parts with real photos and part number verification. Similar specialists exist for Cat, Komatsu, and most other major brands. The specialization means better parts knowledge and more reliable availability.
