CAT 591-2386 DEF PUMP

The CAT 591-2386 DEF Pump is a genuine Caterpillar 24V Diesel Exhaust Fluid pump used in SCR aftertreatment systems. It supports controlled delivery of Diesel Exhaust Fluid for emissions reduction on compatible Cat engines and machines.

Specifications

• Manufacturer: Caterpillar
• Part Number: 591-2386
• Product Type: 24V Diesel Exhaust Fluid Pump
• System: Aftertreatment / DEF / SCR emissions system
• Voltage: 24 V
• Brand: Cat
• Function: Diesel Exhaust Fluid pumping for emissions system operation

Key Features

• Genuine Caterpillar 24V DEF pump
• Supports SCR aftertreatment system operation
• Used across many Cat machine and engine platforms
• Designed for emissions-control service and repair

Typical Applications

• DEF system repair
• Aftertreatment system troubleshooting
• Tier 4 emissions system maintenance
• Heavy equipment and generator service

Cross References

• No official public cross references were verified beyond CAT 591-2386.

Machine Compatibility

• Cat Parts Store lists many compatible machine families including wheel loaders, excavators, motor graders, track-type tractors, articulated trucks, compactors, material handlers, and generator sets.
• Examples listed include AD45, R1700, R2900, 770, 772, 621K, 623K, 627K, 631K, 637K, 651, 657, D6, D7E, D8, D9, 336, 349, 352, 390F, 950M, 966M, 980M, 988K, and others.
• Final compatibility must be confirmed by serial number.

Engine Platforms

• Cat Parts Store lists Engine C15, C18, C7.1, C9.3, and C3.6.
• Cat Parts Store lists Industrial Engine C18, C7.1, C9.3, C9.3B, C3.6, C4.4, C13, and C15.

The CAT 591-2386 DEF Pump should be matched to the exact aftertreatment system and machine serial number before installation.

Search Keywords

CAT 591-2386 DEF pump, Caterpillar 5912386 Diesel Exhaust Fluid pump, Cat 24V DEF pump, Caterpillar SCR pump.

Cat aftertreatment pump, Tier 4 DEF system pump, Caterpillar emissions pump, heavy equipment DEF pump.