Coolant Reservoir / Surge Tank / with caps & sensors 575.10115 or A0532836000

The rTech Black Label RT10115 Coolant Reservoir is a heavy-duty replacement designed for compatible Freightliner Cascadia cooling systems.

Built from durable molded polymer, the RT10115 provides the reservoir body, mounting layout, and hose connections required for compatible installations while supporting normal coolant expansion and recovery within the cooling system.

Supplied with two coolant reservoir caps, this assembly provides a convenient replacement solution for compatible applications.

Built for uptime. Built for serious trucks.

Features & Benefits

• Heavy-duty molded polymer reservoir
• Designed for compatible Freightliner Cascadia applications
• Includes two coolant reservoir caps
• Vehicle-specific mounting and connection layout
• Supports normal coolant expansion and recovery
• Durable construction for commercial vehicle environments
• Designed for straightforward replacement
• Fleet-approved Black Label quality 
  

rTech Product Specifications

• rTech Part Number: RT10115
• Product Type: Coolant Reservoir / Surge Tank
• Material: Molded Polymer
• Maximum Capacity: 12.8 L
• Height: 880 mm
• Length: 307 mm
• Caps Included: 2
• Installation: Vehicle-Specific
• Series: rTech Black Label
  

Vehicle Applications

Designed as an aftermarket replacement for compatible 2018–2022 Freightliner Cascadia New Body Style cooling-system applications. The A05-32836-000 / A0532836000 / 575.10115 family is documented for this application.

Cooling-system configurations can vary by chassis, engine, model year, and reservoir assembly. Verify fitment by VIN before ordering.

Direct Cross References

• rTech Black Label: RT10115
• Automann: 575.10115
• Freightliner: A05-32836-000
• Freightliner: A0532836000
• Reference: 1165834S02
• Reference: 123-182
• Reference: 123182 
  

Cross-reference numbers and manufacturer names are provided for identification and fitment purposes only. All trademarks are the property of their respective owners. rTech Black Label products are independent aftermarket replacement parts and are not manufactured, sponsored, endorsed, or approved by the referenced manufacturers. Always verify fitment before installation.

Why the Coolant Reservoir Matters

The coolant reservoir provides space for coolant expansion and recovery as engine temperature changes.

A cracked, damaged, or leaking reservoir can contribute to:

• Coolant loss
• Air entering the cooling system
• Reduced coolant reserve
• Cooling-system leaks
• Increased risk of overheating if coolant loss continues 
  

For commercial fleets, replacing a compromised reservoir before it creates a larger cooling-system issue can help prevent avoidable downtime.