3408 engine hard to start, running rough or losing power on your Cat 375 or 385? A worn 7W-1983 fuel injection pump fails to deliver consistent high-pressure injection across all eight cylinders of the 3408, causing misfire, derating and excessive smoke. RITO supplies this remanufactured injection pump to restore clean, balanced fuel delivery and full 3408 engine power.
Item NO.:
7W-1983Order(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In Stock7W-1983-FX Fuel Injection Pump (Remanufactured) for Caterpillar 3408 engines on 375, 385, 375L and 385B excavators. Cross-reference: 7W1983. FX designation indicates remanufactured unit with new plunger-barrel set, governor components and delivery valves calibrated to 3408 OEM injection specification.
| Part Number | 7W-1983 / 7W1983 |
|---|---|
| Part Name | Fuel Injection Pump (3408, Remanufactured FX) |
| Compatible Brand | Caterpillar |
| Applicable Models | 375, 385, 375L, 385B Excavator (3408 Engine) |
| Application | Main fuel injection pump for Caterpillar 3408 V8 diesel engine |
| Material | Remanufactured housing with new plunger-barrel set and governor |
| Product Color | Metallic industrial finish |
| Working Temperature | -25°C~+80°C |
| Key Function | Delivers timed high-pressure fuel injection to all eight cylinders of the Cat 3408 engine |
| Condition | Remanufactured to OEM specification (FX grade) |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
New plunger-barrel set, delivery valves and governor flyweights fitted to the inspected original housing; calibrated to 3408 OEM injection timing, delivery volume and governor speed droop on a test bench before shipping.
All eight plunger-barrel elements calibrated to within OEM per-cylinder delivery tolerance to ensure even combustion across the 3408 V8 cylinder bank.
Governor spring and flyweight calibrated to 3408 OEM no-load and full-load speed specification, providing stable engine speed under variable excavator hydraulic loads.
7W-1983 covers 3408 engines on Cat 375, 385, 375L and 385B - the Caterpillar large excavator range using the 3408 V8 diesel.
FAQ
Q: Does the 7W-1983-FX injection pump require calibration after installation?
A: Yes. Even remanufactured pumps require bench calibration verification after installation and warm-up. Confirm injection timing with a timing tool on the 3408 after fitting and adjust if the engine misfires on one or more cylinders.
Q: What causes 7W-1983 injection pump failure on Cat 3408?
A: Contaminated diesel fuel scoring the plunger-barrel set is primary. Water in fuel from a failed fuel tank breather or condensation in the tank, and prolonged use of low-cetane fuel are secondary causes of early wear.
Q: What fuel specification does the Cat 3408 require?
A: The 3408 in 375 and 385 excavators requires low-sulphur diesel with a minimum cetane rating as specified in the Cat 3408 engine operation manual. Using off-specification fuel will damage the new plunger-barrel elements.
Q: How to confirm 7W-1983 is correct for my Cat 375 3408?
A: Match part number 7W-1983 or 7W1983 and confirm engine model is 3408. Confirm machine model is 375, 385, 375L or 385B. Provide engine serial number for cross-reference.
Q: What quality options are available?
A: We provide original, OEM and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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