Undercarriage
Links, rollers, idlers, sprockets & shoes built for thousands of hard yards.
0 parts listed
B2B excavator parts — quoted in 24 hours
The right part.
The number to prove it.
Search by OEM number, part name or machine model across CAT, Komatsu, Hitachi, Volvo and Doosan catalogs — then build one inquiry cart and get a single consolidated quote.
50,000+
part references mapped
24 h
average quote time
68
countries served
9 yr
average warehouse staff tenure
Compatible with CATCompatible with KomatsuCompatible with HitachiCompatible with VolvoCompatible with DoosanCompatible with PerkinsCompatible with HyundaiCompatible with KobelcoCompatible with isuzuCompatible with YanmarCompatible with KYBCompatible with CaterpillarCompatible with CASAPPACompatible with CATCompatible with KomatsuCompatible with HitachiCompatible with VolvoCompatible with DoosanCompatible with PerkinsCompatible with HyundaiCompatible with KobelcoCompatible with isuzuCompatible with YanmarCompatible with KYBCompatible with CaterpillarCompatible with CASAPPA
Verifiable, not just claimed
Batch test reports
Measurements, hardness profiles and bench curves compiled per batch — see the QC page for the standard test set.
DetailsPre-shipment sign-off
Photos, measurement records and test results are compiled into one file per shipment — you approve it before the container is sealed.
DetailsCompany account only
Proforma invoices are issued to the registered company name — never to a personal bank account.
DetailsFree fitment check
Send your model and serial plate and our reference team confirms fitment before you pay anything.
Details
Shop by system
Seven systems, one inquiry — every machine covered.
Hydraulic System
Pumps, cylinders, motors and valves that keep breakout force where it belongs.
4 parts listed
Engine
Injectors, turbochargers, pumps and rebuild kits for diesel powerhouses.
4 parts listed
Electrical
Harnesses, sensors, monitors and controllers — plug-and-play reliability.
0 parts listed
Filters
Oil, fuel, air and hydraulic filtration matched to OEM service intervals.
0 parts listed
Seal Kits
Cylinder and master seal kits that stop leaks before they start.
0 parts listed
Attachments
Buckets, breakers, couplers and wear parts to extend what your machine can do.
0 parts listed
Most requested OEM numbers
What repair workshops and rental fleets asked us for most this season.
36 soldWater pump
4D94-4D98$52.39 Per pcs · final quote by email
View part →
24 soldThe C4.4 engine is suitable for heavy machinery.
C4.4 455-9378$8,682 Per PCS · final quote by email
View part →
16 soldFlow Control Hydraulic Valve Hydraulic excavator
C0400-60005 08-03 251 4468336$329 Per PCS · final quote by email
View part →
13 soldExcavator main control valve
410105-00575$3,892 Per pcs · final quote by email
View part →
8 soldHydraulic pump
KP30.38-05S6-LMF/0D-BSL/30.34-79932870 01322G$898 Per 张 · final quote by email
View part →
Hydraulic pump
PC200-7 PC200LC-7$1,946 Per PCS · final quote by email
View part →
1750 in stockAuxiliary Gear Pump Drive Pump Drive Assembly
CAT340 574-0596$262 Per PCS · final quote by email
View part →
2 in stockHydraulic pump
PC30UU$1,198 Per PCS · final quote by email
View part →Parts for your exact machine
Pick a brand to see the models we hold fitment data for — every model page lists OEM numbers, stock and specs.
How an order runs
Five documented steps from quotation to a signed delivery at your door — no hidden fees, no card details.
- 1
Quotation & PI
We confirm fitment, price and lead time, then issue a proforma invoice with bank details (company account only — never personal).
- 2
Payment in full
One T/T transfer settles the whole proforma invoice. Production or stock reservation starts the day the funds clear — wires typically take 1–4 business days.
- 3
Manufacture & QC
You receive progress photos and the QC file: measurements, hardness, test reports and packing list drafts.
- 4
Shipping & documents
We book the freight and issue the full document set — B/L or airway bill, commercial invoice, packing list, certificate of origin where applicable — and confirm copies the same day.
- 5
Delivered to your door
Door-to-door DDP terms where you need them: customs clearance and duties arranged before the cargo moves, delivery at the address on your proforma invoice, and you sign the receipt.
Why repair shops reorder from FAYYO
Documented QC
Hardness, pitch and flow-test reports ship with every order — not promised, attached.
Real warehouse stock
3,600 m² stock in Guangzhou with same-week dispatch for fast movers like filters and seal kits.
Fitment data you can trust
Every listing carries OEM and alternative numbers checked against parts catalogs for your serial ranges.
Fleet-proven cases
Quarries in Chile, rental fleets in the UAE and rebuild shops in Poland reorder season after season.
Questions buyers ask first
The short answers up front — the full list lives on the FAQ page.
Read all 10 answersAlso answered on the FAQ page:
- Which payment methods do you accept?
- Do you provide test reports?
- What happens if a part fails early?
- Do you offer drop shipment to my customers?
- Can I get samples before a big order?
Still unsure? Email our team or send an RFQ — replies within 24 hours.
No — we are an independent B2B supplier of aftermarket and OEM-pattern replacement parts. Every listing states the OEM reference number it matches, and our QC reports show how the part measures against that spec.
Before you send the RFQ
OEM, OEM-pattern and aftermarket — what we actually sell
Every listing carries the OEM reference number it matches, so you can compare our part against your parts book line by line. Where a part is genuine we say so; the rest are aftermarket or OEM-pattern replacements built to the same dimensions, heat treatment and tolerances — and proven with the batch report. FAYYO is an independent aftermarket supplier.
How to verify fitment before you pay
Read the model and serial (PIN) number from your machine’s plate and put both in the RFQ. Fitment breaks by serial across undercarriage, pump and injector families, and the plate is the only source that is right for your machine. Our reference team checks it against catalog data free of charge, and you get written confirmation before any payment is wired.
Mixed containers, MOQ and one consolidated quote
Most catalog items ship from a single piece; filters, seals and other consumables start at 10–20. Build one inquiry cart across undercarriage, hydraulics, engine and wear parts and we quote the whole lot on one proforma invoice, packed and labelled so your warehouse can receive blind.
CAT, Caterpillar, Komatsu, Hitachi, Volvo, Doosan, Perkins, Cummins, Hyundai, Kobelco and Isuzu are trademarks of their respective owners. FAYYO is an independent aftermarket supplier; brand references describe compatibility only and imply no affiliation or endorsement.
Can’t find your part number?
Send us the OEM number, a photo or your full machine list — we quote within 24 hours.