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 pin number and its measured outer diameter and length. 34 mm x 84 mm. One pin per piston; tell us your engine and we confirm the number.
Engine piston pin (gudgeon pin) for the Caterpillar 3066 / S6K / C6.4 diesel engine family (also 3064 / C4.2) — a direct replacement for the original Caterpillar 094-7134. Outer diameter 34 mm x length 84 mm, 20Cr carburised alloy steel, case-hardened and precision-ground. It connects the piston to the connecting rod and transfers combustion load.
The piston pin is a wear item that carries alternating loads and reciprocating friction. Typical failures are outer-diameter wear, pitting and abnormal knocking from excessive clearance in the rod bush; in severe cases it can seize or score the rod bushing. It is normally checked and replaced together with the piston, rod bush and retainers during an engine overhaul.
Supplied as a single pin (20Cr carburised alloy steel). Confirm the removed part number and the measured outer diameter / length before ordering; observe the correct fit with the rod bushing and piston bore, and fit new piston-pin retainers.
Key Features
Direct replacement for CAT 094-7134
34 mm outer diameter x 84 mm length, 20Cr carburised alloy steel
Case-hardened and precision-ground for accurate fit and long life
Piston knock / rattle, increased oil consumption, blow-by, excessive clearance in the rod bushing, outer-diameter wear or pitting; may score the bushing in severe cases.
Installation Tips
1. Check the piston bore and rod bushing for wear; measure clearance before fitting.
2. Clean all parts and fit the pin with the correct clearance (do not hammer in).
3. The pin is normally a light press / push fit in the piston and a running fit in the rod bush.
4. Fit new piston-pin retainers (circlips) and confirm they are fully seated.
