Thermostats, Housings and Fillers
Thermostats, housings, and fillers help regulate coolant flow efficiently, ensuring your engine stays within the ideal temperature range. These essential components are designed for long-lasting performance in racing environments. Fit them together with other temperature control accessories for an effective solution.
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Water Outlet Restrictors – 2-1/8" OD for Small Block Chevy & Ford V8 Engines
J J MOTORSPORTS
$6.95Maintaining precise coolant flow is critical for engine longevity and consistent performance under racing conditions. These water outlet restrictors give you three tuning options—5/8", 3/4", and 1" ID—so you can dial in the exact cooling characteristics...RCFL-5083- SKU:
- RCFL-5083
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$6.95 -
Allstar Performance Swivel Water Neck 90 Deg w/O-ring ALL30170
ALLSTAR PERFORMANCE
$23.99When every degree counts, the Allstar Performance Swivel Water Neck 90 Deg w/O-Ring (ALL30170) delivers the precision cooling connection your Chevy V8 deserves. Its swivel design and leak-proof O-ring seal make installation a breeze — even in the...ALL30170- SKU:
- ALL30170
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MFG Part #:
- ALL30170
$23.99 -
Radiator Aluminum Filler Neck Z17606
NORTHERN RADIATOR
$14.99A reliable radiator filler neck is critical to maintaining proper coolant flow and system integrity under high-performance conditions. This aluminum construction provides lightweight durability while the weld-on design offers a permanent, secure...NRAZ17606- SKU:
- NRAZ17606
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$14.99 -
Cooling System Hose Fill Z12006
NORTHERN RADIATOR
$31.99A properly functioning cooling system depends on reliable hose connections, and a quality filler neck ensures consistent coolant flow without leaks or pressure loss. The Z12006 Cooling System Hose Fill provides a secure, aluminum-constructed mount point...NRAZ12006- SKU:
- NRAZ12006
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$31.99 -
Moroso Extended Inline Filler Neck 1.25 Into 1.25 63483
MOROSO
$70.99A properly sized fuel filler neck ensures reliable fuel system integrity and eliminates leaks at critical connection points. This extended Moroso design accommodates larger hose diameters while maintaining secure, pressure-resistant fittings—essential...MOR63483- SKU:
- MOR63483
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
$70.99 -
Moroso Extended Inline Filler Neck 1.50 Into 1.50 63481
MOROSO
$70.99A properly sized filler neck is critical for fuel system integrity, especially in high-performance applications where vibration and pressure fluctuations demand reliable connections. The Moroso Extended Inline Filler Neck eliminates leaks and fuel...MOR63481- SKU:
- MOR63481
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
$70.99 -
Joes Spacer Water Neck SBC 36025-V2
JOES RACING PRODUCTS
$43.95If you're running a tight engine bay or need precise coolant flow management on your small-block Chevy, a quality water neck spacer is essential for proper thermostat housing alignment and sensor placement. The Joe's Spacer Water Neck eliminates fitment...JOE36025-V2- SKU:
- JOE36025-V2
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
$43.95 -
Chevrolet Performance Water Outlet Housing SBC/BBC 10108470
CHEVROLET PERFORMANCE
$22.19A properly functioning water outlet housing is critical to maintaining optimal coolant flow and engine temperature stability under sustained racing conditions. This Chevrolet Performance unit eliminates guesswork with factory-engineered fitment for SBC...GMP10108470- SKU:
- GMP10108470
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
$22.19 -
Edelbrock Chevy V8 Thermostat Housing - 90 Degree 4818
EDELBROCK
$49.95A quality thermostat housing is critical to maintaining precise coolant flow and engine temperature stability under sustained high-performance driving. The Edelbrock 4818 delivers a direct-bolt solution with superior materials and construction that...EDE4818- SKU:
- EDE4818
- Availability:
- Ships Same Business Day
- Weight:
- 0.73 LBS
$49.95 -
Edelbrock Chevy V8 Thermostat Housing - 45 Degree 4817
EDELBROCK
$37.95A quality thermostat housing is critical for maintaining proper coolant flow and engine temperature stability, especially under sustained racing or high-performance driving conditions. The Edelbrock 4817 delivers a direct-fit solution with the durability...EDE4817- SKU:
- EDE4817
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$37.95 -
Edelbrock Chevy V8 Thermostat Housing - Straight 4816
EDELBROCK
$40.95A quality thermostat housing is critical to maintaining proper coolant flow and engine temperature stability—especially under high-performance driving conditions. The Edelbrock Chevy V8 Thermostat Housing offers a direct-fit solution with precision...EDE4816- SKU:
- EDE4816
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
$40.95 -
Edelbrock Water Neck - Steel Black SBF 289-351W 48143
EDELBROCK
$22.95A reliable water neck is critical for maintaining proper coolant flow and preventing hot spots in your small block Ford engine—especially under sustained racing conditions or high-performance builds. The Edelbrock 48143 delivers a precision-engineered...EDE48143- SKU:
- EDE48143
- Availability:
- Ships Same Business Day
- Weight:
- 0.91 LBS
$22.95 -
On Sale
U-B Water Neck SBF Housing Only 60-1250-A
U-B MACHINE
MSRP: $104.99Now: $101.84Was: $104.99A properly engineered water neck is essential for reliable coolant flow and precise thermostat management in high-performance small block Ford engines. This billet aluminum housing eliminates common leaks and flow restrictions while providing clean,...UBM60-1250-A- SKU:
- UBM60-1250-A
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
MSRP: $104.99Now: $101.84Was: $104.99 -
On Sale
U-B Water Neck SBF w/ -20an 60-1250-20
U-B MACHINE
MSRP: $140.99Now: $136.76Was: $140.99A quality water neck is critical for directing coolant flow efficiently in high-performance Small Block Ford engines, especially when running custom cooling configurations or forced induction setups. This billet aluminum U-B water neck provides a robust,...UBM60-1250-20- SKU:
- UBM60-1250-20
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
MSRP: $140.99Now: $136.76Was: $140.99 -
Inline Coolant Hose Filler 1.50/1.50 Male 5292202
PRW INDUSTRIES, INC.
$36.18A properly functioning coolant system is critical to engine reliability, especially under high-performance conditions where thermal management directly impacts engine longevity and power output. This inline coolant hose filler eliminates weak connection...PQX5292202- SKU:
- PQX5292202
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$36.18 -
Double Beaded Connector Aluminum 1-3/4in x 3in Z17634
NORTHERN RADIATOR
$8.49When you're running a high-performance cooling or fuel system, a reliable connector is non-negotiable. This double-beaded aluminum adapter eliminates weak points in your hose runs by providing a secure, leak-free junction that won't fail under pressure...NRAZ17634- SKU:
- NRAZ17634
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
$8.49 -
Mr. Gasket Thermostat 180 Degree GM LS1 6368
MR. GASKET
$37.66Maintaining precise coolant temperature is critical for LS1 engine reliability and performance, especially under sustained high-rpm operation or track conditions. An undersized or failing thermostat can lead to overcooling, poor fuel atomization, and...MRG6368- SKU:
- MRG6368
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$37.66 -
Mr. Gasket Water Neck - Swivel Style GM LS 97-Up Black 2670BK
MR. GASKET
$51.19A quality water neck is critical to maintaining proper coolant flow and preventing air pockets in your LS engine's cooling system. The Mr. Gasket swivel design allows for flexible hose routing, making installation cleaner and reducing strain on radiator...MRG2670BK- SKU:
- MRG2670BK
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$51.19 -
Mr. Gasket Water Neck GM LS Swivel Style 97-Up 2670
MR. GASKET
$64.65A quality water neck is critical for maintaining proper coolant flow and preventing hot spots in your LS engine bay—especially under sustained high-rpm operation or forced induction. The Mr. Gasket swivel design eliminates common fitment headaches by...MRG2670- SKU:
- MRG2670
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$64.65 -
Moroso Thermostat Spacer - Use w/Brodix HV Intakes 63433
MOROSO
$48.99If you're running a high-performance cooling system with Brodix HV intake manifolds, proper coolant flow and thermostat positioning are critical to maintaining optimal operating temperatures under sustained load. This Moroso water neck spacer provides...MOR63433- SKU:
- MOR63433
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$48.99
