311-4965 engine camshaft for engine spare part

311-4965 engine camshaft for engine spare part Featured Image
  • 311-4965 engine camshaft for engine spare part
  • 311-4965 engine camshaft for engine spare part

Short Description:

CAT 311-4965 engine camshaft fits C18 heavy-duty electronic engines. Its lobe profile is optimized for continuous shock loads in mining, widely stocked for overhaul of 390F, 395 large excavators and 740 articulated trucks.


Product Detail

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description

It is forged from premium steel with deep induction-hardened lobes and precision ground journals for strict concentricity. The inline large-bore C18 uses hydraulic lifters. This camshaft controls valve timing and matches electronic fuel injection to maintain steady power and clean combustion under heavy loads. Unlike Reman 20R-1135, 311-4965 is a new OEM-spec camshaft built for severe mining duty. It fits 390F,390F L,395 excavators,740,745 articulated trucks,834K wheel dozers and 836K compactors, designed for large open-pit mines in Africa and the Middle East with heavy dust and variable loads.

Part No.: 311-4965
Name: Engine Camshaft
Application: CAT C18 engine; 390F,395 excavator,740/745 articulated truck,834K,836K
Material: Carbon Steel, Alloy Steel
Structure: Inline single camshaft, timing gear not included

Product Advantages

1. Heavy-duty timing curve delivers ample air intake and strong torque reserve for large digging loads and reduces smoke.
2. Precision machined journals keep oil film stable under cyclic shock and prevent bearing scoring and seizure.
3. Thick uniform hardened layer improves fatigue resistance and slows cam pitting and spalling.
4. OEM reference dimensions allow reuse of serviceable original cam gear and cut machine downtime.

FAQ 

Q: Can 311-4965 interchange with 20R-1135?
A: Both fit C18, but 311-4965 is new while 20R-1135 is Reman. Verify engine serial number before ordering.

Q: How many 311-4965 camshafts are needed for one C18 engine?
A: C18 is inline engine, only one camshaft per engine.

Q: Can lightly worn original cam gear be reused?
A: It is allowed after backlash inspection. Replace the gear if backlash exceeds service limit to prevent accelerated wear.

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