Nissens 996138 Engine Coolant Reservoir

Engine Coolant Reservoir for Volvo Applications

Nissens 996138 is a pressurized engine coolant reservoir built for Volvo cooling system service. It includes a high quality plastic cap and a 1.20L capacity, making it a direct-fit replacement for select Volvo C30, C70, S40, and V50 models.

Built by Nissens, a manufacturer focused on thermal and engine efficiency components, this reservoir is developed to meet the demands of modern aftermarket cooling systems. Nissens 996138 is a practical choice when replacing a cracked, leaking, or aging coolant expansion tank on Volvo C30 and Volvo S40 platform vehicles.

Key Features

• Engine coolant reservoir for select Volvo cooling systems
• Pressurized design
• 1.20L capacity
• Plastic construction
• Cap included with high quality plastic cap type
• No mounting hardware included
• No level sensor included
• No mounting bracket included

Detailed Description

This Nissens coolant reservoir, part number 996138, is designed for vehicles that rely on a pressurized expansion tank to manage coolant volume and system pressure. It fits 2008-2013 Volvo C30, 2006-2013 Volvo C70, 2004-2011 Volvo S40, and 2005-2011 Volvo V50. The reservoir is made from plastic and supplied with a cap, providing a straightforward replacement for worn or damaged original equipment tanks.

Nissens develops thermal management components with attention to fit and function across aftermarket applications. This reservoir is a strong match for drivers searching for a Volvo C30 coolant reservoir, Volvo S40 expansion tank, or a replacement coolant reservoir for Volvo V50 and C70 models. Part number 996138 also helps confirm the correct application during ordering and service lookup.

This part cross-references Genu 30776151 for the same application.

Common Problems This Part Can Address

• Coolant leaks from a cracked or brittle reservoir
• Loss of system pressure from a damaged expansion tank
• Visible coolant level issues caused by an aging plastic tank
• Cap-related pressure retention problems
• Replacement needs after heat cycling and long-term wear

Installation Notes and Tips

Verify the reservoir shape, hose connections, and mounting points against the original unit before installation. Transfer any reusable hoses or sensors from the vehicle if applicable, since this reservoir does not include a level sensor, mounting hardware, or a mounting bracket. Inspect the cap seal and surrounding cooling system components during service, and refill the system with the correct coolant specification after installation.

Quality Assurance

Nissens is a market-focused manufacturer of thermal and engine efficiency components, and its products are developed and manufactured to consistent quality standards for aftermarket use. Part number 996138 is built as a direct replacement coolant reservoir for the listed Volvo applications.