1W3728 Turbocharger Fits Caterpillar Models
1W3728 Turbocharger Fits Caterpillar Models
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One New Aftermarket Replacement Turbocharger for Caterpillar (Cat) 3406 Series Engines
This aftermarket replacement turbocharger (Turbo G, model 4MF-721) fits Caterpillar 3406, 3406B, and 3406C engines, including generator set and industrial engine applications. The turbocharger increases compressed air intake to the combustion chamber, boosting engine power output and fuel efficiency in heavy-duty construction, industrial, and generator set applications.
Specifications
- Turbo Model: 4MF-721
- Length: 396.24 mm (15.60 in)
- Width: 320.04 mm (12.60 in)
- Height: 431.80 mm (17.00 in)
- Weight: approx. 65 lbs
Compatible Models
Caterpillar Engine - Generator Set: 3406, 3406B, 3406C, SR4
Caterpillar Engine - Industrial: 3406, 3406B, 3406C, SR4
Serial Number Ranges (3406C Generator Set): 4RG1-1501, JK1-98, 4ZR1-UP, 8FS1-1023, 1DZ1-UP, 2WB11476-UP, 4JK99-99999 -- verify your engine serial number prefix before ordering.
Replaces Part Number(s):
1W3728, 1W-3728
Aftermarket Interchange Numbers
CA1W3728, 0R5759, OR5759, 187166
New aftermarket replacement part - not remanufactured, not used.



