Russell Performance Adapter Fitting — 12mm x 1.25 with 1/8in NPT Port

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SKU: RUS640700
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Russell

Russell engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Russell lineup with fast shipping and expert fitment support — order with confidence.

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Russell Performance Adapter Fitting: 12mm x 1.25 with 1/8in NPT Port

Enhance the functionality of your fluid system with the Russell Performance Adapter Fitting, specifically designed with a 12mm x 1.25 thread and an integrated 1/8in NPT port. This versatile adapter is ideal for adding sensors, gauges, or other auxiliary components to your existing lines, particularly when used with Russell hose ends like 640910, 641110, and 641120. Its precision engineering ensures a secure and leak-free connection, crucial for accurate readings and system integrity.

Expand Your System's Capabilities

Constructed from lightweight, high-quality aluminum, this adapter is built for durability and performance. The inclusion of an 1/8in NPT port provides a convenient access point without the need for complex modifications, simplifying the installation of pressure sensors, temperature probes, or other monitoring devices. Available in various finishes, it not only performs exceptionally but also maintains a clean, professional look in your engine bay.

  • 12mm x 1.25 thread for specific metric applications
  • Integrated 1/8in NPT port for sensors or gauges
  • Lightweight aluminum construction
  • Compatible with Russell hose ends 640910, 641110, 641120
  • Facilitates system expansion and monitoring

Find this and other essential Russell Performance fittings for your build at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Russell

Russell engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Russell lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Russell Performance Adapter Fitting: 12mm x 1.25 with 1/8in NPT Port

Enhance the functionality of your fluid system with the Russell Performance Adapter Fitting, specifically designed with a 12mm x 1.25 thread and an integrated 1/8in NPT port. This versatile adapter is ideal for adding sensors, gauges, or other auxiliary components to your existing lines, particularly when used with Russell hose ends like 640910, 641110, and 641120. Its precision engineering ensures a secure and leak-free connection, crucial for accurate readings and system integrity.

Expand Your System's Capabilities

Constructed from lightweight, high-quality aluminum, this adapter is built for durability and performance. The inclusion of an 1/8in NPT port provides a convenient access point without the need for complex modifications, simplifying the installation of pressure sensors, temperature probes, or other monitoring devices. Available in various finishes, it not only performs exceptionally but also maintains a clean, professional look in your engine bay.

  • 12mm x 1.25 thread for specific metric applications
  • Integrated 1/8in NPT port for sensors or gauges
  • Lightweight aluminum construction
  • Compatible with Russell hose ends 640910, 641110, 641120
  • Facilitates system expansion and monitoring

Find this and other essential Russell Performance fittings for your build at GGCRACING.

Product Details

Product Description

About Russell

Russell engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Russell lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Russell Performance Adapter Fitting: 12mm x 1.25 with 1/8in NPT Port

Enhance the functionality of your fluid system with the Russell Performance Adapter Fitting, specifically designed with a 12mm x 1.25 thread and an integrated 1/8in NPT port. This versatile adapter is ideal for adding sensors, gauges, or other auxiliary components to your existing lines, particularly when used with Russell hose ends like 640910, 641110, and 641120. Its precision engineering ensures a secure and leak-free connection, crucial for accurate readings and system integrity.

Expand Your System's Capabilities

Constructed from lightweight, high-quality aluminum, this adapter is built for durability and performance. The inclusion of an 1/8in NPT port provides a convenient access point without the need for complex modifications, simplifying the installation of pressure sensors, temperature probes, or other monitoring devices. Available in various finishes, it not only performs exceptionally but also maintains a clean, professional look in your engine bay.

  • 12mm x 1.25 thread for specific metric applications
  • Integrated 1/8in NPT port for sensors or gauges
  • Lightweight aluminum construction
  • Compatible with Russell hose ends 640910, 641110, 641120
  • Facilitates system expansion and monitoring

Find this and other essential Russell Performance fittings for your build at GGCRACING.

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