Both start from £369 + VAT. The model suffix on your serial plate decides which you need, and it’s worth the walk to check it: an 84 and a 90 look identical in a photo.
If the plate’s unreadable, count the links on your current track. Either way, confirm before you order — the two don’t mix.
FAQs
What size rubber tracks fit a Cat 303.5E?
300×52.5×90 — the E and E2 CR generation moved to 90 links.
What size fits the earlier 303.5, 303.5C CR and 303.5D CR?
300×52.5×84. Same width and pitch as the later machines, six fewer links.
How do I tell which generation I’ve got?
Check the serial plate — the model suffix on it decides the size. If in doubt, count the links: 84 means the earlier machines, 90 means E or E2.
Do you deliver to my part of the UK or Ireland?
Yes — we supply across the UK and Ireland, and your quote shows the delivered price to your site or yard before you commit. Nothing gets added after the fact.
More Caterpillar parts
All Caterpillar rubber tracks →
See every machine on 300×52.5×84 →