| Parameter | Specification |
|---|---|
| COGENG Part Number | 332/J8260 (CG-JWH-332J8260) |
| OEM Equivalent | JCB 332/J8260 |
| Product Type | Engine Wiring Harness Assembly |
| Application | Engine electrical system |
| Harness Type | Complete engine bay harness |
| Compatible Models | JCB 3DX, 4DX, 5C Backhoe Loaders |
| Brand | Part Number |
|---|---|
| COGENG | 332/J8260 |
| JCB | 332/J8260 |
| Interchange | 332/J8261, 332/J8262, 332/K4730, 332/J3293 |
| Parameter | Specification |
|---|---|
| System Voltage | 12V or 24V DC (JCB standard - verify machine) |
| Current Capacity | Up to 40A (main power circuits) |
| Wire Gauge Range | 14AWG - 20AWG (signal) / 8AWG - 12AWG (starter/alternator) |
| Insulation Resistance | ≥100MΩ @ 500V DC |
| Dielectric Strength | 1500V AC/60s No Breakdown |
| Voltage Drop | <0.5V @ rated load |
| Temperature Rating | -40°C to +125°C (engine bay rated) |
| Component | Material Specification |
|---|---|
| Conductor | High-purity tinned copper (99.9%) |
| Wire Insulation | Heat-resistant XLPE / PVC (125°C rated) |
| Outer Wrapping | Automotive-grade cloth tape / Corrugated conduit |
| Connector Housings | OEM-grade Nylon 66 / PBT (UL94 V-0) |
| Terminals | Tin-plated / Gold-plated brass |
| Grommets/Bushings | EPDM Rubber (UV resistant) |
| Shielding | Aluminum foil + copper braid (sensor circuits) |
| Identification | Heat-shrink printed circuit labels |
| Diesel-resistant jacketing | Special compound for engine bay |
| Parameter | Rating |
|---|---|
| Temperature Range | -40°C to +125°C |
| Ingress Protection | IP67 (engine connectors) |
| Vibration Resistance | 15G @ 50-1000Hz |
| UV Resistance | 500+ hours weatherometer |
| Chemical Resistance | Resists diesel, oil, hydraulic fluid, coolant |
| Abrasion Resistance | Corrugated conduit in high-wear areas |
| Model | Series | Engine | Application |
|---|---|---|---|
| 3DX | Standard | JCB Dieselmax / Perkins | Engine harness |
| 3DX Super | Super | JCB Dieselmax | Engine harness |
| 3DX Plus | Plus | JCB Dieselmax | Engine harness |
| Model | Series | Engine | Application |
|---|---|---|---|
| 4DX | Standard | JCB Dieselmax 444 | Engine harness |
| 4DX Super | Super | JCB Dieselmax 444 | Engine harness |
| 4DX Plus | Plus | JCB Dieselmax 444 | Engine harness |
| 4DX Xtra | Xtra | JCB Dieselmax 444 | Engine harness |
| Model | Series | Engine | Application |
|---|---|---|---|
| 5C | Standard | JCB Dieselmax 448 | Engine harness |
| 5C Plus | Plus | JCB Dieselmax 448 | Engine harness |
| 5C Xtra | Xtra | JCB Dieselmax 448 | Engine harness |
| Engine Model | Displacement | Cylinders | Fuel System | Found In |
|---|---|---|---|---|
| JCB Dieselmax 444 | 4.4L | 4-cylinder | Common Rail | 3DX, 4DX |
| JCB Dieselmax 448 | 4.8L | 4-cylinder | Common Rail | 5C |
| Perkins 1104D-44 | 4.4L | 4-cylinder | Common Rail | 3DX (early) |
Note: Verify engine model and voltage (12V or 24V) with your equipment manual before ordering. Contact COGENG with your machine serial number for exact compatibility confirmation.
| Circuit Type | Components Connected | Wire Specification | Shielding |
|---|---|---|---|
| Engine Control (ECU) | Main ECU, crank sensor, cam sensor | Shielded 18-20 AWG | Yes |
| Fuel System | Injectors (4), fuel pump, pressure sensors | 14-16 AWG + shield | On sensors |
| Air Intake | Turbo actuator, MAF sensor, boost sensor | 18-20 AWG shielded | Yes |
| Exhaust / Aftertreatment | EGR valve, DPF sensors (if equipped), temp sensors | 18-20 AWG shielded | Yes |
| Cooling System | Fan motor, coolant temp sensor, fan clutch | 14-16 AWG (fan) + 20 AWG (sensor) | No |
| Charging System | Alternator, starter motor, battery connections | 8-10 AWG (alternator) / 4-6 AWG (starter) | No |
| Engine Sensors | Oil pressure, fuel temp, coolant temp, water in fuel | 18-20 AWG shielded | Yes |
| Glow Plug System | Glow plugs, glow relay (cold start) | 12-14 AWG | No |
Q1: Which JCB backhoe loader models use the 332/J8260 wiring harness?
A: This OEM replacement wiring harness is designed for JCB 3DX, 4DX, and 5C backhoe loader models requiring OEM part number 332/J8260. Please verify compatibility with your machine serial number before ordering.
Q2: Is this an OEM or aftermarket harness?
A: It is a direct OEM replacement harness, manufactured to meet or exceed original JCB quality standards for durability, electrical performance, corrosion resistance, and precise fit.
Q3: What is included in the COGENG 332/J8260 wiring harness?
A: This is a complete wiring harness assembly, including all necessary connectors, terminals, and wiring for the backhoe's electrical systems – ready for direct installation.
Contact COGENG
📞 Phone: +86-185-2913-1515 🌐 Instagram
📧 Email: hugo@cogeng.net 🌐 Facebook：Excavator Parts Selection and Replacement Community
💬 WhatsApp +86-185-2913-1515 Facebook: Excavator Wiring Harness
💬 WeChat: +86-185-7865-1106 Facebook: Excavator Wire Harness
🌐 Website: cogeng.net Facebook: Excavator SolenoidValve
#ExcavatorWiringHarness #ExcavatorThrottleMotor #ExcavatorSolenoidValve #ExcavatorSealKit
