CAT Dozer Parts — D6R, D7R, D8R, D9N Undercarriage and Engine Parts
How we supply these parts
Replacement parts for Caterpillar track-type tractors: D3, D4, D5, D6R, D7R, D8R, D8N, D9N, D10, D11 and the newer D6K / D6T / D7E ranges. Our stock includes complete undercarriage groups (chains, rollers, idlers, sprockets, track shoes, pins and bushes), blade and ripper components (cutting edges, end bits, ripper shanks and teeth), steering and transmission parts, plus the full engine, cooling and hydraulic range.
Application & fitment
Fitment is confirmed from your machine model and serial range before anything is quoted.
Sourcing & grades
Genuine, OEM-equivalent and premium aftermarket quoted side by side — you choose.
Delivery & export
Air freight, express and sea freight with crating, weights and documents prepared by our export desk.
Quality control
Incoming inspection and dimensional checks against the original part number, photo confirmation before dispatch.
Kits & combined orders
Complete assembly kits and mixed orders with other machines to cut freight per unit.
After-sales
Fitment support, replacement on confirmed quality issues and paperwork for warranty claims.
Fitment and sourcing notes
Heavy dozer undercarriage is a weight-driven purchase, so we quote it with packing, crate weight and freight calculated up front. Tell us the machine model, the track pitch and the shoe width you need — or simply the part number — and we will confirm stock, weight and the most economical shipment option.
All items are matched to the original Caterpillar number and can be supplied in genuine, OEM-equivalent or premium aftermarket grade. Kit pricing is available for complete undercarriage renewal, which is normally the cheapest way to buy.
Machine models covered
Reference part numbers
| Component | Reference numbers | Confirm with |
|---|---|---|
| Track roller (D8R) | D8R-ROLLER / 6Y-2757 / 173-4131 | Machine model + S/N |
| Carrier roller | 7S-7035 / 169-8930 / 9W-8095 | Machine model + S/N |
| Idler group | 159-1816 / 7T-4774 / 9W-8422 | Machine model + S/N |
| Sprocket segment | 6T-1081 / 8E-2220 / 104-2879 | Machine model + S/N |
| Track chain assembly | 6Y-1390 / 9W-8922 / 217-4124 | Machine model + S/N |
| Cutting edge / end bit | 4T-6387 / 8E-5520 / 9W-6659 | Machine model + S/N |
| Ripper shank & tooth | 6Y-0257 / 104-9350 / 1U-3252 | Machine model + S/N |
| Torque converter / transmission parts | 2P-6266 / 6Y-0940 / 9W-8360 | Machine model + S/N |
FAQ
Can you supply a complete D8R undercarriage kit?
How do I choose between genuine and aftermarket dozer undercarriage?
Do you ship heavy undercarriage internationally?
Can you supply cutting edges to a drawing or a different hole pattern?
What machine details do you need for a quotation?
Quotation within 1 hour
Send a part number, machine model or photo of the old component. We reply with grade options, unit price, crate weight, freight and lead time. No obligation, no spam.