| Technical Feature / Attribute | Product Specification Details |
| Brand / Manufacturer | COGENG |
| Part Number (MPN) | 275-7004 (Cross-ref: 2757004) |
| Product Category | Wiring Harness Assembly / Electrical Wire Loom |
| Primary Machine Application | Caterpillar (CAT) Heavy Equipment / Diesel Engines |
| Material Construction | High-Grade Iron (Conductors/Bracket Hardware) & Heavy-Duty Vulcanized Rubber / Weather-Proof Sleeving |
| Condition | 100% Brand New, Direct OEM Spec Replacement |
| Quality Certification | ISO9001 Certified Factory Standard |
| Country of Origin | Guangdong, China |
| Minimum Order Quantity (MOQ) | 1 Piece (Trial Order Acceptable) |
| Supply Capacity | 500 PCS / Month |
| Operating Voltage | 12V / 24V DC Heavy Machinery Electrical System |
| Quality Control & Testing | 100% Automated Continuity, Electrical Resistance, and Burn-in Bench Tested |
The COGENG 275-7004 Wiring Harness Assembly is a high-reliability electrical wire loom engineered specifically for Caterpillar (CAT) heavy equipment and diesel engine platforms. Serving as a vital central nerve network within the machine's electrical architecture, this harness ensures seamless electrical power distribution and precise sensor signal feedback between electronic control modules (ECU/ECM), hydraulic control solenoids, transmission actuators, and engine bay transducers.
Operating in rugged earthmoving, mining, and civil construction environments subjects internal machinery wiring to intense thermal cycles, continuous chassis vibration, humidity, and chemical exposure from diesel fuel, hydraulic fluids, and lubricants. Over thousands of operational hours, standard factory wiring can suffer from copper conductor fatigue, insulation embrittlement, cracked protective rubber, and terminal oxidation. These failure points cause intermittent fault codes, hydraulic valve response lag, electronic throttle errors, and unexpected equipment downtime.
Manufactured in Guangdong, China under strict ISO9001 quality management standards, the COGENG 275-7004 harness combines high-durability iron structural connectors/terminals with heavy-duty oil- and heat-resistant rubber protective armor. Built as a direct plug-and-play OEM replacement, it eliminates voltage drop issues, prevents system short circuits, and restores long-term machine productivity on demanding job sites.
Main Cable Trunk: Multi-strand electrolytic copper wiring with flame-retardant XLPE insulation designed for main signal delivery and ground distribution.
Heavy-Duty Iron Terminal Plugs & Brackets: Precision-stamped iron connectors and bracket supports providing robust physical mounting and oxidation resistance.
Rubber Protective Sleeving & Grommets: High-grade vulcanized rubber split tubing and firewall grommets offering physical abrasion resistance and sealing out dust and water.
Solenoid & Sensor Branch Connections: Pre-terminated leads featuring factory-matched sealed plugs for hydraulic solenoid valves, transmission switches, and sensors.
IP67/IP68 Waterproof Sealed Connectors: OEM-style multi-pin Deutsch/Amphenol compatible plugs equipped with internal silicone weather seals and positive locking latches.
Protective Outer Armor: Abrasion-resistant corrugated split loom wrapped with heavy-duty heat-resistant electrical tape at critical flex points.
========================================================================================
COGENG 275-7004 WIRING HARNESS ARCHITECTURE
========================================================================================
[ CAT Main Controller / Engine ECM Interface ]
|
|-- Main Power & Fuse Box Feed
|-- Operator Control Interconnect
|
+-----------------+-----------------+
| |
[ Engine & Transmission Trunk ] [ Hydraulic Solenoid & Sensor Trunk ]
| |
+--------------+--------------+ +--------------+--------------+
| | | |
(Engine Sensors) (Starter & Ground) (Hydraulic Solenoids) (Pressure Transducers)
- Oil Pressure Switch - Starter Relay - Pilot Lock Solenoid - Hydraulic Pressure
- Water Temp Sender - Frame Iron Ground- Aux Hydraulic Valve - Oil Temp Transducer
- Fuel Control Solenoid - Battery Cable (+) - Boom/Bucket Lock - Travel Alarm Horn
Caterpillar Heavy Equipment & Excavator Series (Verify specific machine model and serial number)
Caterpillar Diesel Engine Platforms
Machine & Engine Specificity: The 275-7004 / 2757004 wiring harness is engineered specifically for Caterpillar electrical architectures. Please verify your machine model and serial number prior to installation.
Part Number Verification: Always confirm that your existing harness part number cross-references with 275-7004 or 2757004. If unsure, contact our customer service team with your engine/machine serial plate details.
Circuit Safety Check: Before installing the new wiring harness, switch off the main battery isolator and inspect existing solenoid coils for short-circuit faults to ensure new components are fully protected.
+---------------------------------------------------------------------------------------+
| INSTALLATION WORKFLOW STEPS |
+---------------------------------------------------------------------------------------+
| [STEP 1: DISCONNECT POWER] ---> Shut off main battery isolator & disconnect (-) |
| terminal to eliminate risk of electrical short. |
+---------------------------------------------------------------------------------------+
| [STEP 2: LABEL & REMOVE] ---> Tag all existing connections on solenoids and frame,|
| unbolt iron mounting clamps, and extract old harness.|
+---------------------------------------------------------------------------------------+
| [STEP 3: BENCH COMPARISON] ---> Lay out old harness beside COGENG 275-7004 to |
| verify branch lengths, pin count & connector styles.|
+---------------------------------------------------------------------------------------+
| [STEP 4: ROUTE & SECURE] ---> Route new harness along factory chassis channels; |
| seat rubber grommets firmly in frame pass-throughs. |
+---------------------------------------------------------------------------------------+
| [STEP 5: PLUG & CLICK] ---> Connect sensors, hydraulic solenoids, and controller|
| plugs until locking tabs click tightly. |
+---------------------------------------------------------------------------------------+
| [STEP 6: SYSTEM TEST] ---> Reconnect battery power, turn key switch to ON, |
| verify instrument display, and test operation. |
+---------------------------------------------------------------------------------------+
| Detail | Description |
| Shipping Methods | By Air, By Sea, By Express (FedEx, UPS, DHL, TNT, etc.). The specific arrangement will be based on the cargo situation and destination. |
| Estimated Delivery Time | Based on the shipping time of the logistics company. The arrival time shown by the carrier's tracking system shall prevail. |
| Packing | Inner: PP bag. Outer: Export-grade carton box with protective foam. |
| Payment Terms | Western Union, L/C (Letter of Credit), T/T (Telegraphic Transfer), MoneyGram, D/A (Documents against Acceptance), D/P (Documents against Payment) |
| Policy Point | Terms |
| Merchant Return Policy | Products shipped are not returnable or exchangeable. |
| Quality Guarantee | Every board and harness is function-tested and burned-in before shipment to ensure it is not Dead on Arrival (DOA). |
| Pre-Shipment Confirmation | Photos and testing videos can be provided upon request before shipment to confirm correct part numbers and operational condition. |
Q1: What materials are used to construct the COGENG 275-7004 wiring harness?
A: The harness is constructed using durable iron terminal supports and connectors combined with heavy-duty vulcanized rubber outer insulation sleeving to ensure heat, oil, and abrasion resistance.
Q2: What is the Minimum Order Quantity (MOQ) for this item?
A: Trial orders are acceptable! The MOQ is 1 piece, and our monthly production supply capacity is up to 500 PCS.
Q3: Can I get pre-shipment photos or videos of the harness?
A: Yes! Upon request, detailed photos and operational testing videos can be provided before dispatch to verify part numbers and connector profiles.
Sales Price: Please contact COGENG sales customer service for specific prices and wholesale bulk discounts.
Shipping Method: The specific arrangement will be based on the cargo situation, total parcel weight, and destination country.
Estimated Delivery Time: It is based on the shipping time of the logistics company, and the arrival time shown by the carrier's tracking system shall prevail.
Merchant Return Policy: The products shipped are not returnable or exchangeable. Please verify part numbers carefully before ordering.
*shipping Details Return Sales*
Sales price:
Please contact COGENG sales customer service for specific prices.
Shipping method:
The specific arrangement will be based on the cargo situation.
Estimated delivery time:
It is based on the shipping time of the logistics company, and the arrival time shown shall prevail.
Contact details are at the bottom.
MerchantReturnPolicy:
The products shipped are not returnable or exchangeable.
Contact COGENG
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