Description
Product Overview
The BOXI Engine Coolant Water Outlet and Sensor is a precision‑engineered component designed to replace OEM part numbers 902-2087, CO35005, 12656446, 25201457, and 12653537. Manufactured by ShangHai BOXI Auto Parts Co., Ltd., the unit combines a high‑grade aluminum alloy outlet with a stainless‑steel temperature sensor, delivering superior heat transfer and accurate engine temperature feedback. Dimensions of 9.45 x 5.51 x 3.94 inches and a lightweight 12.3‑ounce construction make it easy to install in tight engine bays. The part is rigorously tested for hardness and crush resistance, ensuring durability under extreme thermal cycles.
Usage
This water outlet is intended for use in a range of Buick and Chevrolet models, including the Buick Envision (2016‑2020), LaCrosse (2018‑2019), Regal (2014‑2017), and Chevrolet Blazer, Equinox, and Silverado variants. It is installed in the engine cooling system where it directs coolant flow to the thermostat housing, allowing the sensor to monitor temperature and signal the ECU for optimal fan and fuel management. Ideal for both original equipment replacement and performance upgrades, the component functions reliably in daily commuting, long‑distance travel, and demanding towing conditions.

Why Choose Us
BOXI leverages advanced casting techniques and strict quality control to produce parts that meet or exceed OEM specifications. Each unit undergoes a multi‑stage inspection, including dimensional verification, pressure testing, and sensor calibration, guaranteeing a perfect fit and reliable operation. Our global distribution network ensures fast delivery, and a dedicated support team assists with fitment questions, providing peace of mind for mechanics and DIY enthusiasts alike.
Key Features
- High‑strength aluminum alloy outlet for optimal coolant flow and reduced weight.
- Stainless‑steel temperature sensor calibrated to OEM tolerances for accurate engine monitoring.
- Direct fit for multiple Buick and Chevrolet models, eliminating the need for modifications.
- Rigorous hardness and crush testing ensures long‑term durability under high thermal stress.
- Comes with all necessary hardware: 1× water outlet, 1× sensor, and installation gaskets.
FAQ
Does this part require any special tools for installation?
No special tools are required beyond standard socket and wrench sets. The outlet bolts directly to the existing coolant pipe using the factory‑specified torque values.
Can I use this outlet with aftermarket cooling systems?
Yes, the design conforms to standard coolant line diameters, making it compatible with most aftermarket radiators and overflow tanks.
What is the warranty coverage for this product?
BOXI offers a 12‑month limited warranty covering manufacturing defects and premature failure under normal operating conditions.
Is the sensor compatible with my vehicle’s ECU?
The sensor uses the same electrical connector and signal range as the original OEM part, ensuring seamless integration with the vehicle’s engine control unit.
How do I verify compatibility before purchase?
Check the year, make, and model dropdown on the product page or compare the OEM part numbers listed (902‑2087, CO35005, etc.) with your vehicle’s service manual.




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