593-2337 | Genuine CAT® Diesel Exhaust Fluid (DEF) Sensor Head Assembly

SKU: 593-2337 MPN: 593-2337

Accurate DEF system monitoring starts with this Genuine Diesel Exhaust Fluid Sensor Head Assembly, developed by Caterpillar. Condition: new. Part number: 593-2337, ensuring correct fluid sensing to support stable emissions system operation.

$849.00
No Core Charge
8 in stock, ready to ship

Pickup available at Warehouse - Howard st 7092 ste F

Usually ready in 24 hours

Need it fast? We offer overnight shipping

Contact us to check if overnight next-day delivery is available for your order - PN: 593-2337

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Product Description

Product Name Diesel Exhaust Fluid (DEF) Sensor Head Assembly Product Name Diesel Exhaust Fluid (DEF) Sensor Head Assembly
Condition New Condition New
Brand Caterpillar® Brand Caterpillar®
Part Number 593-2337 Part Number 593-2337
Cross Reference 5932337 Cross Reference 5932337
Engine Compatibility
Machine / Industrial C4.4 Machine / Industrial C4.4
Vehicle Compatibility
Track-Type Tractors D4, D6K2 XL, D6K2 LGP Track-Type Tractors D4, D6K2 XL, D6K2 LGP
Asphalt Pavers AP500F, AP555F, AP600F, AP655F Asphalt Pavers AP500F, AP555F, AP600F, AP655F
Pneumatic Compactors CW-34 series Pneumatic Compactors CW-34 series
Soil Compactors CP11–CP16 series, CS11–CS19 series Soil Compactors CP11–CP16 series, CS11–CS19 series
Vibratory Compactors CS-54B–CS-78B series, CP-54B–CP-74B series Vibratory Compactors CS-54B–CS-78B series, CP-54B–CP-74B series
Other Compactors CCS9 Other Compactors CCS9
Telehandlers TL1055D, TL1255D Telehandlers TL1055D, TL1255D
Specifications
DEF Header Height (IN) 11 DEF Header Height (IN) 11
DEF Return Fitting Dia. (IN) 5/16 SAE J2044 DEF Return Fitting Dia. (IN) 5/16 SAE J2044
Coolant Outlet Fitting Dia. (IN) 5/8 Hose Bead Coolant Outlet Fitting Dia. (IN) 5/8 Hose Bead
Tank Interface 4.05 Dia. Bore Seal Tank Interface 4.05 Dia. Bore Seal
Electrical Connector Deutsch DT4 (STD) Electrical Connector Deutsch DT4 (STD)
Sensor Type Digital (canbus) Sensor Type Digital (canbus)
DEF Suction Fitting Dia. (IN) 3/8 SAE J2044 DEF Suction Fitting Dia. (IN) 3/8 SAE J2044
Coolant Inlet Fitting Dia. (IN) 5/8 Hose Bead Coolant Inlet Fitting Dia. (IN) 5/8 Hose Bead
In-Tank Filter 40µ In-Tank Filter 40µ

Useful Information

Description and Purpose:

The Genuine Diesel Exhaust Fluid (DEF) Sensor Head Assembly by Caterpillar, supplied new under Part number: 593-2337, serves as a multifunctional interface between the DEF tank and SCR system. It monitors fluid level, temperature, and concentration while supporting DEF heating to maintain system stability across varied operating conditions. Cross reference: 5932337.

Why Replacement is Important:

A malfunctioning DEF sensor head can lead to incorrect fluid readings, crystallization issues, warning messages, or SCR derate conditions. Timely replacement helps prevent emissions faults and avoids unnecessary downtime caused by inaccurate DEF system data.

Impact on Vehicle Performance:

Proper operation of the DEF sensor head supports consistent SCR efficiency, stable emissions control, and uninterrupted engine performance. Reliable sensing allows the system to maintain optimal dosing and reduces the risk of power limitations.

Manufacturer Information:

Caterpillar® is a globally recognized manufacturer of heavy-duty machinery and engine systems, known for integrating durability, precision engineering, and emissions compliance into its components. 

Tags & Category: DEF Sensor Head Assembly, Diesel Exhaust Fluid Sensor, SCR System Component, Emission Control System, Exhaust Aftertreatment Part, Diesel Emissions Component, DEF System Part, Heavy Duty Engine Component, Commercial Vehicle Emissions Part, Truck Emission System, Aftertreatment System Component

Warranty:

Parts Finder Q offers a 365-days warranty for all types of parts in any condition. The warranty applies exclusively to purchases made directly through our website (partsfinderq.com). Please note that purchases made through third-party platforms like eBay or Amazon are not covered by this warranty.

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  • Icon Truck, Fast Delivery
    Free shipping over $199 Place an order today and receive it on Mar 6
  • Clock Icon
    Orders placed before 7-PM EST will ship same business day
  • Location icon, warehouse pickup point.
    Pickup available usually ready in 24 hours
  • Need it fast? We offer overnight shipping

    Contact us to check if overnight next-day delivery is available for your order - PN: 593-2337