Coolant electric pre-heater 22816851

Description

Coolant electric pre-heater by GM, catalog number 22816851. Confirmed catalog fitment: Chevrolet GM Volt II (2015–2019). For an accurate match, compare the number and identification with the removed part and confirm the vehicle specification by VIN. The fitment list is a reference and does not replace a vehicle-specific compatibility check.

ELECTRIC ENGINE COOLANT HEATER. The electric coolant heater is a component of the engine preheating system designed to warm engine coolant before starting the vehicle in cold climate conditions. The device improves cold start performance by heating the antifreeze and gradually warming the engine block and cylinder head, reducing mechanical wear and lowering the load on the battery and starter motor. The operating principle is based on an electric heating element installed in the cooling circuit that transfers heat to the coolant, which then circulates naturally or with the help of an integrated pump. Depending on design, the heater may be an inline coolant heater, an integrated engine heater module or a unit with a circulation pump for more efficient heat distribution. Failure symptoms include lack of coolant heating, extended engine warm-up time, electrical faults or coolant leaks around the heater housing. Causes may include heating element failure, wiring damage, corrosion of electrical contacts or pump malfunction. Our catalog includes genuine OEM electric coolant heaters, high-quality aftermarket replacements and inspected used units without structural or electrical damage. Used units are tested for heater resistance, electrical connector integrity and housing sealing. Selection is performed by VIN number, engine type and cooling system configuration. Proper installation ensures reliable cold engine starting and improved winter vehicle operation.

Compatibility

Fits 1 vehicles

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About the manufacturer · GM

GM (General Motors) is one of the largest automotive corporations in the world, founded in 1908 in the United States by entrepreneur William C. Durant. The company объединяет several well‑known automotive brands includin...

GM (General Motors) is one of the largest automotive corporations in the world, founded in 1908 in the United States by entrepreneur William C. Durant. The company объединяет several well‑known automotive brands including Chevrolet, GMC, Cadillac and Buick and is a major manufacturer of vehicles, powertrains and genuine automotive components. Under the GM brand a wide range of original spare parts and components is produced for vehicles of the group, including engine parts, cooling system components, transmission elements, suspension parts, braking systems, electronic modules, sensors, fuel system components and body parts. Genuine GM parts are developed according to factory technical specifications and undergo strict quality control at every stage of production. This ensures precise compatibility with GM vehicles, reliable operation of vehicle systems and preservation of factory performance characteristics. According to feedback from vehicle owners and automotive service professionals, GM genuine components are known for consistent manufacturing quality, solid reliability and long service life. Many users report precise fitment without the need for modifications and stable vehicle performance after replacing components. The most commonly mentioned drawback is the relatively higher price compared with some aftermarket alternatives, although many vehicle owners consider genuine GM parts a justified choice due to their reliability, durability and compliance with manufacturer standards.

Additional information

Coolant electric pre-heater by GM, catalog number 22816851, is listed for vehicle repair or maintenance. The catalog identifies the item as “Coolant electric pre-heater”. Confirmed catalog fitment: Chevrolet GM Volt II (2015–2019). Fitment is based on the catalog links between the part and vehicle bodies. It helps narrow the search, but final compatibility must be confirmed for the exact vehicle specification. The primary ordering references are part number 22816851 and manufacturer GM. Parts can differ within the same vehicle model by production year, engine, transmission, installation side, or position. Before purchase, compare the number and identification with the removed component and verify body, year, and specification by VIN. Also compare appearance, connectors, mountings, dimensions, and included items whenever those details are relevant to this part. Before purchase, compare identification and appearance with the old part and verify compatibility by VIN.

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