The order we never skip — which is why the wrong part does not reach your site.
01
Confirm
Nameplate, OEM number and working conditions — checked against your machine, confirmed in writing before you pay.
02
Verify
Photos and video of the actual part, packed and labelled, before it leaves. What you see is what ships.
03
Prevent
Send the hour-meter reading and we log the service interval — you get a message before the next one is due.
04
Dispatch
Nothing leaves Xi’an until you reply "ok". You approve, then we ship — not the other way round.
Confirm this part for my machine
Machine model and part number are what let us confirm fitment in writing. Message is optional.
Overview
Fitment Note: Confirmed by the removed part number and the engine model. Fits Caterpillar CAT C6.4 on CAT 320D / 321D / 323D. Tell us your machine model and we confirm fitment.
Specifications
MOQ
5 kits
Type
Engine overhaul kit
Engine
CAT C6.4
Contents
Gaskets/seals + bearings + wear parts (per order)
Shipping
Rail / Sea / Air
Warranty
12 Months
Lead Time
15-30 Days
Application
CAT 320D / 321D / 323D
Bearing Size
+0.5 mm
C6.4 engine overhaul (rebuild) kit, bearing size +0.5 mm, for the Caterpillar C6.4 diesel engine used in CAT 320D / 321D / 323D excavators — a complete repair kit for a top-and-bottom overhaul. Contents are supplied as a set (gaskets/seals, bearings and wear parts); the exact list is confirmed per order.
A full overhaul kit is used when the engine is smoking, using oil, knocking or losing power and needs the head and bottom end resealed and rebuilt in one job. Buying a kit saves time and ensures the matching parts are used together.
Supplied as one kit. Confirm the engine model, serial number and the bearing/liner size before ordering (standard or oversize); check the crankshaft, liner and head condition and follow the workshop manual clearances.
We put it on the table and say exactly how we handle it.
Concern
Impact
How we help
Wrong part model
Installation failure, extra cost
Confirmed by number, model and photos before shipment.
Unclear part number
Delays in sourcing
We identify the part from whatever info you have.
Poor quality
Downtime and complaints
Stable replacement elements; every unit checked.
Slow response
Project delays
Reply within 24 hours.
Many suppliers
Complex procurement, higher cost
Wide coverage, mixed orders from one source.
Shipping risk
Damage or late arrival
Export packing and the right shipping method.
High MOQ
Financial risk
Flexible quantity — start small.
No after-sales
Problems unresolved
We stay in touch after delivery.
How we work
Every step — what you do, what we do.
01
Send your request
Send part number, machine model or photo — whatever you have.
02
Model confirmation
We confirm the correct part from your number, model and photos.
03
Quotation & details
You receive price, availability and specifications.
04
Order confirmation
We arrange preparation on the agreed terms.
05
Inspection & packing
We check the parts and send photos before dispatch.
06
Shipping & delivery
Express, air, rail or sea — with tracking after dispatch.
Frequently asked questions
Is C6.4-ENGOV-D the same as C6.4-ENGOV-D?
C6.4 Engine Overhaul Kit (+0.5 mm) C6.4-ENGOV-D is our replacement for the original Caterpillar C6.4-ENGOV-D; the original number is kept for cross-reference.
What engine does it fit?
Caterpillar CAT C6.4, on CAT 320D / 321D / 323D.
What should I send to confirm?
Photos of the old part, the engine nameplate and your machine model.
