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 / 3066 on CAT 320D / 321D / 323D. Tell us your machine model and we confirm fitment.
Specifications
MOQ
20 pcs
Type
Cylinder head gasket
Engine
CAT C6.4 / 3066
Material
Non-asbestos MLS
Position
Block to head
Replaces
CAT 294-1682
Shipping
Rail / Sea / Air
Warranty
12 Months
Lead Time
15-30 Days
Application
CAT 320D / 321D / 323D
Qty per Engine
1 (per head)
Cylinder head gasket for the Caterpillar C6.4 / 3066 diesel engine — a direct replacement for the original Caterpillar 294-1682. Fitted between the cylinder block and the head to seal the combustion chambers, coolant passages and oil galleries.
A critical sealing component: under high temperature and pressure it can blow out and burn, causing gas and fluid leaks — abnormal coolant loss, milky oil, bubbles in the radiator, low compression and power loss. Replaced during head work, an overhaul or after an overheating event.
Supplied as a single gasket. Confirm the removed number and engine model before ordering; clean the faces, check flatness, use NEW head bolts and follow the torque/angle procedure.
Abnormal coolant consumption, milky/emulsified oil, bubbles in the radiator or overheating, white smoke, low compression, power loss, oil and coolant mixing.
Installation Tips
1. Clean block and head faces; check flatness and for cracks.
2. Fit the gasket dry as specified (no extra sealant on MLS gaskets).
3. Use NEW head bolts, tighten in sequence in stages to torque + angle.
4. Refill coolant, warm up, check for leaks; re-check after the first heat cycle.
