How to replace the Engine Coolant Thermostat Housing (LNJ) (3.4L) on Chevrolet Equinox?

You must remove the fuel injector sight shield before starting the engine coolant Thermostat housing (LNJ) (3.4L) replacement task. Pull the coolant until it sits beneath the Thermostat position. The next step requires deletion of both crossover Exhaust Pipe and Radiator Hose present at the Thermostat housing. After removing the Thermostat housing bolts begin cleaning off any sealer from the bolt threads before separating the Thermostat housing and the Thermostat. Mount the heating control component first then put on the Thermostat housing after cleaning all mating areas properly. Use rtv sealer type gm p/n 12378478 (or Canadian P/N 88900041 equivalent) on the bolt threads of the Thermostat housing. Screw in the Thermostat housing bolts until they reach 25 nm of torque (18 lb ft). After reattaching the Radiator Hose to the Thermostat housing install the crossover Exhaust Pipe. To complete the task reinstall the fuel injector sight shield while you fill the cooling system and conduct leak detection followed by any needed repair work.

OEM Chevrolet Equinox Thermostat Housing

Engine Coolant Thermostat Housing

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4 Thermostat Housings found

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Chevrolet Equinox Thermostat Housing
Part Number: 12689039
$73.35 MSRP: $150.72
You Save: $77.37 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12651113
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2017 Chevrolet Equinox | LT, LTZ, Premier, Sport | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Chevrolet Equinox Thermostat Housing
Part Number: 12673413
$101.54 MSRP: $208.66
You Save: $107.12 (52%)
ADD TO CART
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Water Inlet; Thermostat Unit; Housing, Engine Coolant Thermostat
- Replaced by: 25205818
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2024 Chevrolet Equinox | L, LS, LT, Premier, RS | 4 Cyl 1.5 L GAS
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Chevrolet Equinox Thermostat Housing
Part Number: 25201447
$66.48 MSRP: $136.58
You Save: $70.10 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Thermostat Gasket; Thermostat; Thermostat Cover; Water Inlet; Housing, Engine Coolant Thermostat
- Replaces: 12651603
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2020 Chevrolet Equinox | LT, Premier | 4 Cyl 2.0 L GAS
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Chevrolet Equinox Thermostat Housing
Part Number: 12618159
$72.33 MSRP: $129.16
You Save: $56.83 (44%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Engine Coolant Thermostat Housing; Thermostat Housing Cover
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2017 Chevrolet Equinox | L, LS, LT, LTZ, Premier | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS

Chevrolet Equinox Thermostat Housing

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Chevrolet Equinox Thermostat Housing Parts Questions & Experts Answers

Thermostat Housing
12689039
Q: How to replace the Engine Coolant Thermostat Housing (LNJ) (3.4L) on Chevrolet Equinox?
A: You must remove the fuel injector sight shield before starting the engine coolant Thermostat housing (LNJ) (3.4L) replacement task. Pull the coolant until it sits beneath the Thermostat position. The next step requires deletion of both crossover Exhaust Pipe and Radiator Hose present at the Thermostat housing. After removing the Thermostat housing bolts begin cleaning off any sealer from the bolt threads before separating the Thermostat housing and the Thermostat. Mount the heating control component first then put on the Thermostat housing after cleaning all mating areas properly. Use rtv sealer type gm p/n 12378478 (or Canadian P/N 88900041 equivalent) on the bolt threads of the Thermostat housing. Screw in the Thermostat housing bolts until they reach 25 nm of torque (18 lb ft). After reattaching the Radiator Hose to the Thermostat housing install the crossover Exhaust Pipe. To complete the task reinstall the fuel injector sight shield while you fill the cooling system and conduct leak detection followed by any needed repair work.

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