Speedway Motors Water Flow Restrictor 1-5/8 Inch Universal Radiator Coolant Flow Controller Billet Aluminum Anodized Cooling System Accessory for Street, Race & Classic Cars

★★★★★ 4.3 90 reviews

US$7.20
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US$7.20
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Free shipping Free 30-day returns

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Product details

Management number 228802348 Release Date 2026/05/31 List Price US$7.20 Model Number 228802348
Category

These billet aluminum anodized coolant flow restrictors fit in the lower radiator neck and reduce turbulance to improve cooling. Slows and smooths coolant flow for greater heat dissipation in the radiator.

  • Universal Radiator Fitment: Designed to fit standard 1-5/8″ lower radiator neck openings for broad compatibility with street cars, race cars, and classic cooling systems.
  • Improved Coolant Flow: Reduces coolant turbulence and smooths water flow through the radiator to help improve heat dissipation and manage engine temperatures.
  • Durable Construction: Made from lightweight billet aluminum with anodized red finish for corrosion resistance and long-lasting performance in engine bay conditions.
  • Easy Installation: Simple drop-in design installs quickly without special tools, ideal for DIY mechanics, restorers, or professional shops.
  • Cooling System Accessory: A practical upgrade for performance builds and vintage restorations looking to enhance radiator efficiency and reduce overheating.
ASIN B076VP12KQ
Color Red
Brand Name Speedway Motors
Unit Count 1.0 Count
Item Weight 1 Pounds
Thread Size 1.55 inch
Thread Type NPT
Manufacturer Speedway Motors
Model Number 91716580
Material Type Aluminum
Connector Type Adapter
Exterior Finish Anodized
Item Dimensions 3.6 x 3.3 x 0.8 inches
Number of Pieces 1
Included Components Includes product as described
Manufacturer Part Number 91716580
Manufacturer Warranty Description See Return Policy

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4.3 out of 5
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90 ratings | 37 reviews
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