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163-6740 Fuse Box Wiring Harness Assembly for Caterpillar CAT 312C E320C Excavator
Restore reliable electrical performance to your Caterpillar 312C E320C with the 163-6740 Fuse Box Wiring Harness Assembly. Built as a direct replacement for the original part, it matches the factory routing, connector layout and length, so it goes in where the old one came out.
Product Details
- Part Name: Fuse Box Wiring Harness Assembly
- Part Number: 163-6740, 1636740
- Condition: Aftermarket new
- Product Weight: 2.15 kg / 4.74 lbs
- Brand: TOPARTS
- Warranty: 3 months
- Feature: Strict quality control standards; stable performance and high reliability
Compatible Models
CAT 312C E320C Excavator
How It Works on Your Machine
Mounted in the cab or beside the battery area, the fuse box distributes power to lights, controllers, solenoids, the monitor and accessories. A replacement restores clean contacts and secure fuse seating across every circuit at once.
A healthy fuse box keeps power distribution organised and safe. When terminals corrode, the housing cracks or relays loosen, circuits can lose power intermittently even though every fuse looks good, which makes diagnosis frustrating.
Caterpillar machines rely heavily on electronic engine and machine control, which makes healthy wiring essential for performance and fault-free operation.
Why a New Harness Beats Patching
Patching wiring takes time: tracing the fault, cutting, crimping and sealing, often in an awkward position. When the insulation is hardened along the whole length, that time is better spent fitting a new harness that solves every weak spot at once.
What You Get with TOPARTS
The goal is simple: a harness that fits like the original and keeps working like it. Matching connectors, correct branch lengths and durable insulation mean stable performance and high reliability in daily heavy-duty use.
Keep Your Machine Earning
An excavator sitting idle waiting for parts costs money every hour. Having the correct harness on hand means the repair becomes a scheduled job instead of an emergency, and the machine is back at work as soon as installation is finished.
How to Tell It Is Time for a New One
Common warning signs are:
- Corroded or discoloured terminals
- Relays clicking but components not operating
- Melted or cracked fuse box housing
- Circuits losing power even though the fuses look good
- Fuses that will not sit firmly in their sockets
If these symptoms persist after checking fuses, batteries and grounds, the wiring itself is the next thing to suspect.
Fitting Advice
- Disconnect the battery before removing the old fuse box.
- Transfer fuses and relays one at a time, matching each to its marked position.
- Check that every fuse seats firmly in the new holder.
- Power up and test each circuit before closing the cover.
Shipping and Payment
- Payment Method: PayPal, Stripe, Credit card, Visa, etc.
- Shipping Method: DHL, FedEx, UPS, TNT, USPS EMS, etc.
- Track Your Order: An email containing the tracking number with a link will be sent to you as soon as it ships.
Note: Please verify your part number and match our product pictures to your original item before ordering. If you have any questions, please feel free to contact us. Thanks.
