4631678 463-1678 Fuel Pump CAT C7.1 Injection Pump Engine E320D E323D Excavator
The 463-1678, also known as 4631678, is an original quality fuel injection pump designed specifically for CAT C7.1 diesel engines and perfectly fits CAT E320D and E323D excavator models. As a core fuel system component, this CAT fuel pump undertakes high-precision fuel pressurization and delivery tasks, directly determining engine power performance, fuel efficiency and operating stability. It effectively solves common equipment failures including difficult startup, unstable idling, weak acceleration, excessive exhaust smoke and low fuel pressure caused by aging or damaged original injection pumps.
Adopting professional original matching technology and high-grade wear-resistant metal materials, this 4631678 injection pump features outstanding high-pressure resistance, structural stability and durable service life. It adapts perfectly to long-hour high-load construction operation, dusty sites and complex working conditions, greatly reducing equipment failure rates and daily maintenance costs. Strictly manufactured in accordance with OEM standards, it has accurate overall dimensions for direct replacement and quick installation without extra modification. This reliable C7.1 engine fuel pump maintains stable fuel supply and efficient combustion, effectively reducing excavator downtime, improving working efficiency, and serving as an ideal cost-effective replacement part for CAT E320D and E323D excavator maintenance.
Product Description
| Product Name: | Diesel Injection Fuel Pump |
| Model: | E320D |
| Parts Number: | 4631678 |
| Condition: | 100% Original New |
| In Stock: | Yes |
| MOQ: | 1 PC |
| Payment Methods: | Western Union, T/T |
| Compatibility: | Excavator Parts |
| Delivery Methods: | By air/sea/express |
Related Product Information
Engine Parts


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