21596908 Combined Tank Unit | Genuine Volvo Penta Part

🔧 Product Description

Combined DEF/AdBlue tank unit used in a Volvo Penta SCR aftertreatment installation. The assembly integrates the tank-related supply and level/temperature functions for the emissions system; later service listings use replacement reference 24669276.

⚙️ Key Features

• Genuine Volvo Penta combined DEF tank unit
• Integrated SCR reductant storage and tank-service functions
• Later OEM replacement reference 24669276
• Designed for the matching pump, lines, sensors and control system
• Application must be matched by engine product and serial number
• Engine type: Volvo Penta diesel engine equipped with SCR exhaust aftertreatment

🔌 Function

Stores and supplies diesel exhaust fluid to the SCR dosing system while providing the tank-related level/temperature information required by the controller.

⚠️ Common Signs of Failure

• Low-level or tank-sensor fault codes with adequate DEF present
• SCR derate or inducement warning
• DEF leakage, crystallisation or contamination
• No DEF supply to the dosing system
• Incorrect tank temperature or level indication

🛠️ Service Notes

• It supersedes 21073824, and a later parts listing also carries reference 24669276 for the same tank unit — check under both numbers if a current search comes up empty
• This unit combines the DEF supply with the tank's level/temperature sensing, so treat the sender wiring and connector as part of the same job whenever the tank itself is disturbed

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21596908 → Supersedes 21073824

OEM / Related Numbers

• 20812622 related DEF tank reference
• 21073824 related DEF tank reference
• 7420812622 related cross-reference
• 7421073824 related cross-reference
• 7421244989 related cross-reference

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging