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CAT C7.1 Electronic Fuel Injection Engine Complete Engine Assembly E320GX 329D2 330GC 336GC

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Guangzhou Kawo Construction Machinery Co.,Ltd.

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CAT C7.1 Electronic Fuel Injection Engine Complete Engine Assembly E320GX 329D2 330GC 336GC

Supply Ability : 300 Sets / Month

Payment Terms : T/T

Model Number : E320GX 329D2 330GC 336GC

Price : Negotiable

Packaging Details : Wooden Case / Cartonwith Foam Protection, or as Required

Condition : New / Rebuilt

Place of Origin : China

Delivery Time : 3-8 days

Product Name : Hydraulic Pump Assembly

MOQ : 1 Set

Warranty : 6 Months

Brand Name : CAVOYD

Transportation Method : DHL, UPS, FedEx, Sea Freight

MOQ : 1 set

Part No : C7.1

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Product Overview

The CAT C7.1 Common Rail EFI Engine Assembly is an inline 6-cylinder, 7.1L displacement, turbocharged and aftercooled power unit. It is specially matched for CAT 320GX, 329D2, 330GC, and 336GC excavators, delivering strong power output, low fuel consumption, and a stable electronic control system. Available in China Stage III and China Stage IV emission versions, with both new and remanufactured engine assemblies offered.

Technical Specifications

Construction	Inline 6-cylinder, 4-stroke, turbocharged & aftercooled
Displacement	7.1L
Bore × Stroke	105 mm × 135 mm
Fuel System	Common Rail EFI, CAT ADEM A4/A5 ECM
Power Range	129–225 kW (172–302 hp), with different tuning for different excavator models
Max Torque	Up to 1268 N·m @ 1400 rpm
Rated Speed	2200 rpm
Emission Versions	China Stage III / Stage IIIA; China Stage IV / Stage V (with DOC + DPF + SCR aftertreatment)

Model-Specific Power Output

320GX: approx. 103.6 kW
330GC: 149.8 kW
336GC: 193.5 kW

Common Faults (After-Sales Reference)

Injector wear / clogging — leads to insufficient power, black smoke, and hard starting.
Common rail pressure sensor failure — causes speed limitation and triggers ECM fault codes.
Turbocharger oil leakage.
Carbon accumulation and blockage in DPF on Stage IV units, causing torque derate.
Crankshaft / camshaft sensor damage — results in a no-start condition.

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CAT C7.1 Electronic Fuel Injection Engine Complete Engine Assembly E320GX 329D2 330GC 336GC

Product Tags:

Complete Engine Assembly for E320GX

CAT C7.1 engine assembly

CAT E320GX Engine Assembly

China CAT C7.1 Electronic Fuel Injection Engine Complete Engine Assembly E320GX 329D2 330GC 336GC factory

CAT C7.1 Electronic Fuel Injection Engine Complete Engine Assembly E320GX 329D2 330GC 336GC Images

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