CHEVROLET Thermostats, Housings & Fillers

Water Neck, Chevy LS, Cast Aluminum, As Cast Finish, 45 Degree, 5.7L, 6.0L, 6.2L, Each

Part Number: PQX-5234681

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Estimated Ship Date: Jan 21, 2026 if ordered today

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THERMOSTAT KIT,ENG COOL

Part Number: ADO-19420815

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Estimated Ship Date: Dec 18, 2025 if ordered today

• $20.00 Summit Bucks
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Thermostat Kit-180 Degrees w/ Seal

Part Number: SNN-5215KT

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Water Neck, Cast Aluminum, Copper Plated, O-Ring, 15-Degree, Chevy, Big/Small Block, Each

Part Number: SUM-371102CPR

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Thermostat, Mechanical, OE, 185 degrees, Standard-flow, Each

Part Number: ADO-131-149

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Estimated Ship Date: Today

• $20.00 Summit Bucks

Water Neck Base, Black Anodized, Mopar, Big Block, Each

Part Number: MEZ-WN0029S

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Estimated Ship Date: Today

Thermostats, Mechanical,GM LS Series Cast Aluminum 90° Water Neck Outlet & Thermostat (GM 5.7L, 6.0L, 6.2L), Polished, Temp 82°C/180°F

Part Number: PQX-5234693

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Estimated Ship Date: Jan 20, 2026 if ordered today

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WATER NECK OUTLET, GM LS Series, Cast Aluminum 90°, (GM 5.7L, 6.0L, 6.2L), Polished

Part Number: PQX-5234691

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Estimated Ship Date: Jan 20, 2026 if ordered today

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Thermostat Water Outlet Assembly

Part Number: RNB-902-800

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Estimated Ship Date: Dec 8, 2025 if ordered today

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UltraStat Thermostat - 187 Degrees

Part Number: SNN-5523-187

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Estimated Ship Date: Dec 2, 2025 if ordered today

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Water Neck Spacer, Water Neck Riser, 1.0 in., Billet Aluminum, 3/8 in. NPT Ports, Chevy, Small Block, Each

Part Number: WEH-WM39375125

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 24, 2025 if ordered today

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Water Neck, Coolant Outlet Kit, Stock Water Neck Style, Aluminum, Natural, Buick, Chevrolet, Kit

Part Number: XPF-14T-THK

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Estimated Ship Date: Dec 11, 2025 if ordered today

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LSX STRAIGHT WATER NECK

Part Number: TSN-HC8938BK

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Estimated Ship Date: Jan 15, 2026 if ordered today

• $10.00 Summit Bucks
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Thermostats, Mechanical,GM LS Series Cast Aluminum 90° Water Neck Thermostat (GM 5.7L, 6.0L, 6.2L), as-cast,Temp 82°C/180°F

Part Number: PQX-5234685

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Estimated Ship Date: Jan 20, 2026 if ordered today

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Water Neck, Stock Style, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Part Number: FSS-85083

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Estimated Ship Date: Dec 8, 2025 if ordered today

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High Flow Thermostat-160 Degrees

Part Number: SNN-2523-160

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Estimated Ship Date: Dec 2, 2025 if ordered today

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Engine Coolant Thermostat Housing

Part Number: RNB-902-2006

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Water Necks and Thermostat Housings, Replacement, Stock Style, Aluminum, Natural, Chevrolet, GMC, Jeep, Each

Part Number: ADO-15-10179

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Estimated Ship Date: Dec 18, 2025 if ordered today

• $20.00 Summit Bucks
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Water Neck and Thermostat Housing, Stock, Cast Aluminum, Natural, Chevrolet, GMC, Workhorse, Each

Part Number: RNB-902-756

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Dec 8, 2025 if ordered today

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Thermostat-174 Degrees

Part Number: SNN-523-174

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Water Neck, Aluminum, Clear Anodized, O-Ring, Straight, 1.250 in. Outlet, Chevy, LS1/LS2/LS6, Each

Part Number: HSE-4910-347-205

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Estimated Ship Date: Dec 3, 2025 if ordered today

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Water Neck, Aluminum, Black Anodized, O-Ring, Straight, 1.250 in. Outlet, Chevy, LS1/LS2/LS6, Each

Part Number: HSE-4910-347-202

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Estimated Ship Date: Dec 3, 2025 if ordered today

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Water Neck Plate, Billet Aluminum, Blue Anodized, Straight Up, Chevy, Mopar, Big Block, Small Block, Each

Part Number: MEZ-WN0912B

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Water Necks and Thermostat Housings, Replacement, Stock Style, Steel, Natural, Chevrolet, GMC, Oldsmobile, Each

Part Number: ADO-15-1794

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Estimated Ship Date: Dec 19, 2025 if ordered today

• $20.00 Summit Bucks
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Water Neck, Straight Up, Billet Aluminum, Clear Anodized, -20 AN Threads Outlet, Chevy, Each

Part Number: MOR-63474

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Estimated Ship Date: Dec 15, 2025 if ordered today

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