4N8591 - COUPLING-EXHAUST Fits Caterpillar (Fits CAT)
4N8591 - COUPLING-EXHAUST Fits Caterpillar (Fits CAT)
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One New Aftermarket Replacement Exhaust Coupling for Caterpillar (Cat) Construction and Industrial Equipment
This exhaust coupling connects and seals exhaust system components on Caterpillar (Cat) engines and equipment. Identified by Cat as a Coupling-Exhaust, part number 4N-8591, it is used in the turbocharger exhaust section of 3304B and 3306 engines and related machines across multiple Caterpillar product lines including motor graders, excavators, track-type tractors, wheel loaders, and pipelayers.
Specifications
- Inner Diameter: 2.80 in (approx. 71 mm)
- Length: 109.22 mm / 4.30 in
- Width: 109.22 mm / 4.30 in
- Height: 81.28 mm / 3.20 in
Compatible Models
Caterpillar Motor Graders: 140B, 140G, 160G
Caterpillar Excavators: 235, 235B
Caterpillar Engines (Industrial/Gen Set): 3304B, 3306
Caterpillar Pipelayers: 528, 572R
Caterpillar Soil Compactors: 815
Caterpillar Wheel Loaders: 930R, 966C
Caterpillar Track Loaders: 977K, 977L
Caterpillar Track-Type Tractors: D4E, D4E SR, D5B, D6C, D6D, D6E, D6E SR, D6F SR, D6G, D6G SR, D7G, D7G2, D7H, D7R
Replaces Part Number(s):
4N8591, 4N8591-A
New aftermarket replacement part - not remanufactured, not used.
